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OPTIONS

Track Selection

--alang=<languagecode[,languagecode,...]>

Specify a priority list of audio languages to use. Different container formats employ different language codes. DVDs use ISO 639-1 two-letter language codes, Matroska, MPEG-TS and NUT use ISO 639-2 three-letter language codes, while OGM uses a free-form identifier. See also --aid.

Examples

mpv dvd://1 --alang=hu,en
Chooses the Hungarian language track on a DVD and falls back on English if Hungarian is not available.
mpv --alang=jpn example.mkv
Plays a Matroska file in Japanese.
--slang=<languagecode[,languagecode,...]>

Specify a priority list of subtitle languages to use. Different container formats employ different language codes. DVDs use ISO 639-1 two letter language codes, Matroska uses ISO 639-2 three letter language codes while OGM uses a free-form identifier. See also --sid.

Examples

  • mpv dvd://1 --slang=hu,en chooses the Hungarian subtitle track on a DVD and falls back on English if Hungarian is not available.
  • mpv --slang=jpn example.mkv plays a Matroska file with Japanese subtitles.
--aid=<ID|auto|no>

Select audio track. auto selects the default, no disables audio. See also --alang. mpv normally prints available audio tracks on the terminal when starting playback of a file.

--audio is an alias for --aid.

--aid=no or --audio=no or --no-audio disables audio playback. (The latter variant does not work with the client API.)

--sid=<ID|auto|no>

Display the subtitle stream specified by <ID>. auto selects the default, no disables subtitles.

--sub is an alias for --sid.

--sid=no or --sub=no or --no-sub disables subtitle decoding. (The latter variant does not work with the client API.)

--vid=<ID|auto|no>

Select video channel. auto selects the default, no disables video.

--video is an alias for --vid.

--vid=no or --video=no or --no-video disables video playback. (The latter variant does not work with the client API.)

If video is disabled, mpv will try to download the audio only if media is streamed with youtube-dl, because it saves bandwidth. This is done by setting the ytdl_format to "bestaudio/best" in the ytdl_hook.lua script.

--ff-aid=<ID|auto|no>, --ff-sid=<ID|auto|no>, --ff-vid=<ID|auto|no>

Select audio/subtitle/video streams by the FFmpeg stream index. The FFmpeg stream index is relatively arbitrary, but useful when interacting with other software using FFmpeg (consider ffprobe).

Note that with external tracks (added with --sub-file and similar options), there will be streams with duplicate IDs. In this case, the first stream in order is selected.

--edition=<ID|auto>
(Matroska files only) Specify the edition (set of chapters) to use, where 0 is the first. If set to auto (the default), mpv will choose the first edition declared as a default, or if there is no default, the first edition defined.

Playback Control

--start=<relative time>

Seek to given time position.

The general format for absolute times is [[hh:]mm:]ss[.ms]. If the time is given with a prefix of + or -, the seek is relative from the start or end of the file. (Since mpv 0.14, the start of the file is always considered 0.)

pp% seeks to percent position pp (0-100).

#c seeks to chapter number c. (Chapters start from 1.)

Examples

--start=+56, --start=+00:56
Seeks to the start time + 56 seconds.
--start=-56, --start=-00:56
Seeks to the end time - 56 seconds.
--start=01:10:00
Seeks to 1 hour 10 min.
--start=50%
Seeks to the middle of the file.
--start=30 --end=40
Seeks to 30 seconds, plays 10 seconds, and exits.
--start=-3:20 --length=10
Seeks to 3 minutes and 20 seconds before the end of the file, plays 10 seconds, and exits.
--start='#2' --end='#4'
Plays chapters 2 and 3, and exits.
--end=<time>
Stop at given absolute time. Use --length if the time should be relative to --start. See --start for valid option values and examples.
--length=<relative time>
Stop after a given time relative to the start time. See --start for valid option values and examples.
--rebase-start-time=<yes|no>
Whether to move the file start time to 00:00:00 (default: yes). This is less awkward for files which start at a random timestamp, such as transport streams. On the other hand, if there are timestamp resets, the resulting behavior can be rather weird. For this reason, and in case you are actually interested in the real timestamps, this behavior can be disabled with no.
--speed=<0.01-100>

Slow down or speed up playback by the factor given as parameter.

If --audio-pitch-correction (on by default) is used, playing with a speed higher than normal automatically inserts the scaletempo audio filter.

--loop=<N|inf|force|no>, --loop

Loops playback N times. A value of 1 plays it one time (default), 2 two times, etc. inf means forever. no is the same as 1 and disables looping. If several files are specified on command line, the entire playlist is looped. --loop is the same as --loop=inf.

The force mode is like inf, but does not skip playlist entries which have been marked as failing. This means the player might waste CPU time trying to loop a file that doesn't exist. But it might be useful for playing webradios under very bad network conditions.

--pause
Start the player in paused state.
--shuffle
Play files in random order.
--chapter=<start[-end]>

Specify which chapter to start playing at. Optionally specify which chapter to end playing at.

See also: --start.

--playlist-start=<auto|index>

Set which file on the internal playlist to start playback with. The index is an integer, with 0 meaning the first file. The value auto means that the selection of the entry to play is left to the playback resume mechanism (default). If an entry with the given index doesn't exist, the behavior is unspecified and might change in future mpv versions. The same applies if the playlist contains further playlists (don't expect any reasonable behavior). Passing a playlist file to mpv should work with this option, though. E.g. mpv playlist.m3u --playlist-start=123 will work as expected, as long as playlist.m3u does not link to further playlists.

The value no is a deprecated alias for auto.

--playlist=<filename>

Play files according to a playlist file (Supports some common formats. If no format is detected, it will be treated as list of files, separated by newline characters. Note that XML playlist formats are not supported.)

You can play playlists directly and without this option, however, this option disables any security mechanisms that might be in place. You may also need this option to load plaintext files as playlist.

Warning

The way mpv uses playlist files via --playlist is not safe against maliciously constructed files. Such files may trigger harmful actions. This has been the case for all mpv and MPlayer versions, but unfortunately this fact was not well documented earlier, and some people have even misguidedly recommended use of --playlist with untrusted sources. Do NOT use --playlist with random internet sources or files you do not trust!

Playlist can contain entries using other protocols, such as local files, or (most severely), special protocols like avdevice://, which are inherently unsafe.

--chapter-merge-threshold=<number>
Threshold for merging almost consecutive ordered chapter parts in milliseconds (default: 100). Some Matroska files with ordered chapters have inaccurate chapter end timestamps, causing a small gap between the end of one chapter and the start of the next one when they should match. If the end of one playback part is less than the given threshold away from the start of the next one then keep playing video normally over the chapter change instead of doing a seek.
--chapter-seek-threshold=<seconds>
Distance in seconds from the beginning of a chapter within which a backward chapter seek will go to the previous chapter (default: 5.0). Past this threshold, a backward chapter seek will go to the beginning of the current chapter instead. A negative value means always go back to the previous chapter.
--hr-seek=<no|absolute|yes>

Select when to use precise seeks that are not limited to keyframes. Such seeks require decoding video from the previous keyframe up to the target position and so can take some time depending on decoding performance. For some video formats, precise seeks are disabled. This option selects the default choice to use for seeks; it is possible to explicitly override that default in the definition of key bindings and in input commands.

no:Never use precise seeks.
absolute:Use precise seeks if the seek is to an absolute position in the file, such as a chapter seek, but not for relative seeks like the default behavior of arrow keys (default).
yes:Use precise seeks whenever possible.
always:Same as yes (for compatibility).
--hr-seek-demuxer-offset=<seconds>
This option exists to work around failures to do precise seeks (as in --hr-seek) caused by bugs or limitations in the demuxers for some file formats. Some demuxers fail to seek to a keyframe before the given target position, going to a later position instead. The value of this option is subtracted from the time stamp given to the demuxer. Thus, if you set this option to 1.5 and try to do a precise seek to 60 seconds, the demuxer is told to seek to time 58.5, which hopefully reduces the chance that it erroneously goes to some time later than 60 seconds. The downside of setting this option is that precise seeks become slower, as video between the earlier demuxer position and the real target may be unnecessarily decoded.
--hr-seek-framedrop=<yes|no>

Allow the video decoder to drop frames during seek, if these frames are before the seek target. If this is enabled, precise seeking can be faster, but if you're using video filters which modify timestamps or add new frames, it can lead to precise seeking skipping the target frame. This e.g. can break frame backstepping when deinterlacing is enabled.

Default: yes

--index=<mode>

Controls how to seek in files. Note that if the index is missing from a file, it will be built on the fly by default, so you don't need to change this. But it might help with some broken files.

default:use an index if the file has one, or build it if missing
recreate:don't read or use the file's index

Note

This option only works if the underlying media supports seeking (i.e. not with stdin, pipe, etc).

--load-unsafe-playlists

Load URLs from playlists which are considered unsafe (default: no). This includes special protocols and anything that doesn't refer to normal files. Local files and HTTP links on the other hand are always considered safe.

Note that --playlist always loads all entries, so you use that instead if you really have the need for this functionality.

--access-references=<yes|no>

Follow any references in the file being opened (default: yes). Disabling this is helpful if the file is automatically scanned (e.g. thumbnail generation). If the thumbnail scanner for example encounters a playlist file, which contains network URLs, and the scanner should not open these, enabling this option will prevent it. This option also disables ordered chapters, mov reference files, opening of archives, and a number of other features.

On older FFmpeg versions, this will not work in some cases. Some FFmpeg demuxers might not respect this option.

This option does not prevent opening of paired subtitle files and such. Use --autoload-files=no to prevent this.

This option does not always work if you open non-files (for example using dvd://directory would open a whole bunch of files in the given directory). Prefixing the filename with ./ if it doesn't start with a / will avoid this.

--loop-file=<N|inf|no>

Loop a single file N times. inf means forever, no means normal playback. For compatibility, --loop-file and --loop-file=yes are also accepted, and are the same as --loop-file=inf.

The difference to --loop is that this doesn't loop the playlist, just the file itself. If the playlist contains only a single file, the difference between the two option is that this option performs a seek on loop, instead of reloading the file.

--ab-loop-a=<time>, --ab-loop-b=<time>

Set loop points. If playback passes the b timestamp, it will seek to the a timestamp. Seeking past the b point doesn't loop (this is intentional).

If both options are set to no, looping is disabled. Otherwise, the start/end of the file is used if one of the options is set to no.

The loop-points can be adjusted at runtime with the corresponding properties. See also ab-loop command.

--ordered-chapters, --no-ordered-chapters
Enabled by default. Disable support for Matroska ordered chapters. mpv will not load or search for video segments from other files, and will also ignore any chapter order specified for the main file.
--ordered-chapters-files=<playlist-file>

Loads the given file as playlist, and tries to use the files contained in it as reference files when opening a Matroska file that uses ordered chapters. This overrides the normal mechanism for loading referenced files by scanning the same directory the main file is located in.

Useful for loading ordered chapter files that are not located on the local filesystem, or if the referenced files are in different directories.

Note: a playlist can be as simple as a text file containing filenames separated by newlines.

--chapters-file=<filename>
Load chapters from this file, instead of using the chapter metadata found in the main file.
--sstep=<sec>

Skip <sec> seconds after every frame.

Note

Without --hr-seek, skipping will snap to keyframes.

--stop-playback-on-init-failure=<yes|no>
Stop playback if either audio or video fails to initialize. Currently, the default behavior is no for the command line player, but yes for libmpv. With no, playback will continue in video-only or audio-only mode if one of them fails. This doesn't affect playback of audio-only or video-only files.

Program Behavior

--help, --h

Show short summary of options.

You can also pass a string to this option, which will list all top-level options which contain the string in the name, e.g. --h=scale for all options that contain the word scale. The special string * lists all top-level options.

-v
Increment verbosity level, one level for each -v found on the command line.
--version, -V
Print version string and exit.
--no-config

Do not load default configuration files. This prevents loading of both the user-level and system-wide mpv.conf and input.conf files. Other configuration files are blocked as well, such as resume playback files.

Note

Files explicitly requested by command line options, like --include or --use-filedir-conf, will still be loaded.

See also: --config-dir.

--list-options
Prints all available options.
--list-properties
Print a list of the available properties.
--list-protocols
Print a list of the supported protocols.
--log-file=<path>
Opens the given path for writing, and print log messages to it. Existing files will be truncated. The log level always corresponds to -v, regardless of terminal verbosity levels.
--config-dir=<path>

Force a different configuration directory. If this is set, the given directory is used to load configuration files, and all other configuration directories are ignored. This means the global mpv configuration directory as well as per-user directories are ignored, and overrides through environment variables (MPV_HOME) are also ignored.

Note that the --no-config option takes precedence over this option.

--save-position-on-quit

Always save the current playback position on quit. When this file is played again later, the player will seek to the old playback position on start. This does not happen if playback of a file is stopped in any other way than quitting. For example, going to the next file in the playlist will not save the position, and start playback at beginning the next time the file is played.

This behavior is disabled by default, but is always available when quitting the player with Shift+Q.

--watch-later-directory=<path>

The directory in which to store the "watch later" temporary files.

The default is a subdirectory named "watch_later" underneath the config directory (usually ~/.config/mpv/).

--dump-stats=<filename>

Write certain statistics to the given file. The file is truncated on opening. The file will contain raw samples, each with a timestamp. To make this file into a readable, the script TOOLS/stats-conv.py can be used (which currently displays it as a graph).

This option is useful for debugging only.

--idle=<no|yes|once>

Makes mpv wait idly instead of quitting when there is no file to play. Mostly useful in input mode, where mpv can be controlled through input commands.

once will only idle at start and let the player close once the first playlist has finished playing back.

--include=<configuration-file>
Specify configuration file to be parsed after the default ones.
--load-scripts=<yes|no>
If set to no, don't auto-load scripts from the scripts configuration subdirectory (usually ~/.config/mpv/scripts/). (Default: yes)
--script=<filename>
Load a Lua script. You can load multiple scripts by separating them with commas (,).
--script-opts=key1=value1,key2=value2,...
Set options for scripts. A script can query an option by key. If an option is used and what semantics the option value has depends entirely on the loaded scripts. Values not claimed by any scripts are ignored.
--merge-files
Pretend that all files passed to mpv are concatenated into a single, big file. This uses timeline/EDL support internally.
--no-resume-playback
Do not restore playback position from the watch_later configuration subdirectory (usually ~/.config/mpv/watch_later/). See quit-watch-later input command.
--profile=<profile1,profile2,...>
Use the given profile(s), --profile=help displays a list of the defined profiles.
--reset-on-next-file=<all|option1,option2,...>

Normally, mpv will try to keep all settings when playing the next file on the playlist, even if they were changed by the user during playback. (This behavior is the opposite of MPlayer's, which tries to reset all settings when starting next file.)

Default: Do not reset anything.

This can be changed with this option. It accepts a list of options, and mpv will reset the value of these options on playback start to the initial value. The initial value is either the default value, or as set by the config file or command line.

In some cases, this might not work as expected. For example, --volume will only be reset if it is explicitly set in the config file or the command line.

The special name all resets as many options as possible.

Examples

  • --reset-on-next-file=pause Reset pause mode when switching to the next file.
  • --reset-on-next-file=fullscreen,speed Reset fullscreen and playback speed settings if they were changed during playback.
  • --reset-on-next-file=all Try to reset all settings that were changed during playback.
--write-filename-in-watch-later-config

Prepend the watch later config files with the name of the file they refer to. This is simply written as comment on the top of the file.

Warning

This option may expose privacy-sensitive information and is thus disabled by default.

--ignore-path-in-watch-later-config
Ignore path (i.e. use filename only) when using watch later feature.
--show-profile=<profile>
Show the description and content of a profile.
--use-filedir-conf

Look for a file-specific configuration file in the same directory as the file that is being played. See `File-specific Configuration Files`_.

Warning

May be dangerous if playing from untrusted media.

--ytdl, --no-ytdl

Enable the youtube-dl hook-script. It will look at the input URL, and will play the video located on the website. This works with many streaming sites, not just the one that the script is named after. This requires a recent version of youtube-dl to be installed on the system. (Enabled by default, except when the client API / libmpv is used.)

If the script can't do anything with an URL, it will do nothing.

--ytdl-format=<best|worst|mp4|webm|...>
Video format/quality that is directly passed to youtube-dl. The possible values are specific to the website and the video, for a given url the available formats can be found with the command youtube-dl --list-formats URL. See youtube-dl's documentation for available aliases. (Default: youtube-dl's default, currently bestvideo+bestaudio/best)
--ytdl-raw-options=<key>=<value>[,<key>=<value>[,...]]

Pass arbitrary options to youtube-dl. Parameter and argument should be passed as a key-value pair. Options without argument must include =.

There is no sanity checking so it's possible to break things (i.e. passing invalid parameters to youtube-dl).

Example

--ytdl-raw-options=username=user,password=pass --ytdl-raw-options=force-ipv6=

--player-operation-mode=<cplayer|pseudo-gui>
For enabling "pseudo GUI mode", which means that the defaults for some options are changed. This option should not normally be used directly, but only by mpv internally, or mpv-provided scripts, config files, or .desktop files.

Video

--vo=<driver>
Specify the video output backend to be used. See `VIDEO OUTPUT DRIVERS`_ for details and descriptions of available drivers.
--vd=<...>

Specify a priority list of video decoders to be used, according to their family and name. See --ad for further details. Both of these options use the same syntax and semantics; the only difference is that they operate on different codec lists.

Note

See --vd=help for a full list of available decoders.

--vf=<filter1[=parameter1:parameter2:...],filter2,...>
Specify a list of video filters to apply to the video stream. See `VIDEO FILTERS`_ for details and descriptions of the available filters. The option variants --vf-add, --vf-pre, --vf-del and --vf-clr exist to modify a previously specified list, but you should not need these for typical use.
--untimed
Do not sleep when outputting video frames. Useful for benchmarks when used with --no-audio.
--framedrop=<mode>

Skip displaying some frames to maintain A/V sync on slow systems, or playing high framerate video on video outputs that have an upper framerate limit.

The argument selects the drop methods, and can be one of the following:

<no>
Disable any framedropping.
<vo>
Drop late frames on video output (default). This still decodes and filters all frames, but doesn't render them on the VO. It tries to query the display FPS (X11 only, not correct on multi-monitor systems), or assumes infinite display FPS if that fails. Drops are indicated in the terminal status line as Dropped: field. If the decoder is too slow, in theory all frames would have to be dropped (because all frames are too late) - to avoid this, frame dropping stops if the effective framerate is below 10 FPS.
<decoder>
Old, decoder-based framedrop mode. (This is the same as --framedrop=yes in mpv 0.5.x and before.) This tells the decoder to skip frames (unless they are needed to decode future frames). May help with slow systems, but can produce unwatchable choppy output, or even freeze the display completely. Not recommended. The --vd-lavc-framedrop option controls what frames to drop.
<decoder+vo>
Enable both modes. Not recommended.

Note

--vo=vdpau has its own code for the vo framedrop mode. Slight differences to other VOs are possible.

--display-fps=<fps>

Set the display FPS used with the --video-sync=display-* modes. By default, a detected value is used. Keep in mind that setting an incorrect value (even if slightly incorrect) can ruin video playback. On multi-monitor systems, there is a chance that the detected value is from the wrong monitor.

Set this option only if you have reason to believe the automatically determined value is wrong.

--hwdec=<api>

Specify the hardware video decoding API that should be used if possible. Whether hardware decoding is actually done depends on the video codec. If hardware decoding is not possible, mpv will fall back on software decoding.

<api> can be one of the following:

no:always use software decoding (default)
auto:enable best hw decoder (see below)
yes:exactly the same as auto
auto-copy:enable best hw decoder with copy-back (see below)
vdpau:requires --vo=vdpau or --vo=opengl (Linux only)
vdpau-copy:copies video back into system RAM (Linux with some GPUs only)
vaapi:requires --vo=opengl or --vo=vaapi (Linux only)
vaapi-copy:copies video back into system RAM (Linux with Intel GPUs only)
videotoolbox:requires --vo=opengl (OS X 10.8 and up only)
videotoolbox-copy:copies video back into system RAM (OS X 10.8 and up only)
dxva2:requires --vo=opengl with --opengl-backend=angle or --opengl-backend=dxinterop (Windows only)
dxva2-copy:copies video back to system RAM (Windows only)
d3d11va:requires --vo=opengl with --opengl-backend=angle (Windows only)
d3d11va-copy:copies video back to system RAM (Windows only)
mediacodec:copies video back to system RAM (Android only)
rpi:requires --vo=opengl (Raspberry Pi only - default if available)
rpi-copy:copies video back to system RAM (Raspberry Pi only)
cuda:requires --vo=opengl (Any platform CUDA is available)
cuda-copy:copies video back to system RAM (Any platform CUDA is available)
crystalhd:copies video back to system RAM (Any platform supported by hardware)

auto tries to automatically enable hardware decoding using the first available method. This still depends what VO you are using. For example, if you are not using --vo=vdpau or --vo=opengl, vdpau decoding will never be enabled. Also note that if the first found method doesn't actually work, it will always fall back to software decoding, instead of trying the next method (might matter on some Linux systems).

auto-copy selects only modes that copy the video data back to system memory after decoding. Currently, this selects only one of the following modes: vaapi-copy, dxva2-copy, d3d11va-copy, mediacodec. If none of these work, hardware decoding is disabled. This mode is always guaranteed to incur no additional loss compared to software decoding, and will allow CPU processing with video filters.

The vaapi mode, if used with --vo=opengl, requires Mesa 11 and most likely works with Intel GPUs only. It also requires the opengl EGL backend (automatically used if available). You can also try the old GLX backend by forcing it with --opengl-backend=x11, but the vaapi/GLX interop is said to be slower than vaapi-copy.

Most video filters will not work with hardware decoding as they are primarily implemented on the CPU. Some exceptions are vdpaupp, vdpaurb and vavpp. See `VIDEO FILTERS`_ for more details.

The ...-copy modes (e.g. dxva2-copy) allow you to use hardware decoding with any VO, backend or filter. Because these copy the decoded video back to system RAM, they're likely less efficient than the direct modes (like e.g. dxva2).

Note

When using this switch, hardware decoding is still only done for some codecs. See --hwdec-codecs to enable hardware decoding for more codecs.

Quality reduction with hardware decoding

Normally, hardware decoding does not reduce video quality (at least for the codecs h264 and HEVC). However, due to restrictions in video output APIs, there can be some loss, or blatantly incorrect results.

In some cases, RGB conversion is forced, which means the RGB conversion is performed by the hardware decoding API, instead of the OpenGL code used by --vo=opengl. This means certain obscure colorspaces may not display correctly, not certain filtering (such as debanding) cannot be applied in an ideal way.

vdpau is usually safe. If deinterlacing enabled (or the vdpaupp video filter is active in general), it forces RGB conversion. The latter currently does not treat certain colorspaces like BT.2020 correctly (which is mostly a mpv-specific restriction). The vdpauprb video filter retrieves image data without RGB conversion and is safe (but precludes use of vdpau postprocessing).

vaapi is safe if the vaapi-egl backend is indicated in the logs. If vaapi-glx is indicated, and the video colorspace is either BT.601 or BT.709, a forced but correct RGB conversion is performed. Otherwise, the result will be incorrect.

d3d11va is usually safe (if used with ANGLE builds that support EGL_KHR_stream path - otherwise, it converts to RGB), except that 10 bit input (HEVC main 10 profiles) will be rounded down to 8 bits.

dxva2 is not safe. It appears to always use BT.601 for forced RGB conversion, but actual behavior depends on the GPU drivers. Some drivers appear to convert to limited range RGB, which gives a faded appearance. In addition to driver-specific behavior, global system settings might affect this additionally. This can give incorrect results even with completely ordinary video sources.

cuda is usually safe. Interlaced content can be deinterlaced by the decoder, which is useful as there is no other deinterlacing mechanism in the opengl output path. To use this deinterlacing you must pass the option: vd-lavc-o=deint=[weave|bob|adaptive]. Pass weave to not attempt any deinterlacing. 10 and 12bit HEVC is available if the hardware supports it and a sufficiently new driver (> 375.xx) is used.

cuda-copy has the same behaviour as cuda - including the ability to deinterlace inside the decoder. However, traditional deinterlacing filters can be used in this case.

rpi always uses the hardware overlay renderer, even with --vo=opengl.

crystalhd is not safe. It always converts to 4:2:2 YUV, which may be lossy, depending on how chroma sub-sampling is done during conversion. It also discards the top left pixel of each frame for some reason.

All other methods, in particular the copy-back methods (like dxva2-copy etc.) are either fully safe, or not worse than software decoding.

In particular, auto-copy will only select safe modes (although potentially slower than other methods).

--opengl-hwdec-interop=<name>

This is useful for the opengl and opengl-cb VOs for creating the hardware decoding OpenGL interop context, but without actually enabling hardware decoding itself (like --hwdec does).

If set to an empty string (default), the --hwdec option is used.

For opengl, if set, do not create the interop context on demand, but when the VO is created.

For opengl-cb, if set, load the interop context as soon as the OpenGL context is created. Since opengl-cb has no on-demand loading, this allows enabling hardware decoding at runtime at all, without having to temporarily set the hwdec option just during OpenGL context initialization with mpv_opengl_cb_init_gl().

See --opengl-hwdec-interop=help for accepted values. This lists the interop backend, with the --hwdec alias after it in [...]. Consider all values except the proper interop backend name, auto, and no as silently deprecated and subject to change. Also, if you use this in application code (e.g. via libmpv), any value other than auto and no should be avoided, as backends can change.

Currently the option sets a single value. It is possible that the option type changes to a list in the future.

The old alias --hwdec-preload has different behavior if the option value is no.

--videotoolbox-format=<name>
Set the internal pixel format used by --hwdec=videotoolbox on OSX. The choice of the format can influence performance considerably. On the other hand, there doesn't appear to be a good way to detect the best format for the given hardware. nv12, the default, works better on modern hardware, while uyvy422 appears to be better for old hardware. rgb0 and yuv420p also work.
--panscan=<0.0-1.0>

Enables pan-and-scan functionality (cropping the sides of e.g. a 16:9 video to make it fit a 4:3 display without black bands). The range controls how much of the image is cropped. May not work with all video output drivers.

This option has no effect if --video-unscaled option is used.

--video-aspect=<ratio|no>

Override video aspect ratio, in case aspect information is incorrect or missing in the file being played. See also --no-video-aspect.

These values have special meaning:

0:disable aspect ratio handling, pretend the video has square pixels
no:same as 0
-1:use the video stream or container aspect (default)

But note that handling of these special values might change in the future.

Examples

  • --video-aspect=4:3 or --video-aspect=1.3333
  • --video-aspect=16:9 or --video-aspect=1.7777
  • --no-video-aspect or --video-aspect=no
--video-aspect-method=<hybrid|bitstream|container>

This sets the default video aspect determination method (if the aspect is _not_ overridden by the user with --video-aspect or others).

hybrid:Prefer the container aspect ratio. If the bitstream aspect switches mid-stream, switch to preferring the bitstream aspect. This is the default behavior in mpv and mplayer2.
container:Strictly prefer the container aspect ratio. This is apparently the default behavior with VLC, at least with Matroska.
bitstream:Strictly prefer the bitstream aspect ratio, unless the bitstream aspect ratio is not set. This is apparently the default behavior with XBMC/kodi, at least with Matroska.

Normally you should not set this. Try the container and bitstream choices if you encounter video that has the wrong aspect ratio in mpv, but seems to be correct in other players.

--video-unscaled=<no|yes|downscale-big>

Disable scaling of the video. If the window is larger than the video, black bars are added. Otherwise, the video is cropped, unless the option is set to downscale-big, in which case the video is fit to window. The video still can be influenced by the other --video-... options. This option disables the effect of --panscan.

Note that the scaler algorithm may still be used, even if the video isn't scaled. For example, this can influence chroma conversion. The video will also still be scaled in one dimension if the source uses non-square pixels (e.g. anamorphic widescreen DVDs).

This option is disabled if the --no-keepaspect option is used.

--video-pan-x=<value>, --video-pan-y=<value>

Moves the displayed video rectangle by the given value in the X or Y direction. The unit is in fractions of the size of the scaled video (the full size, even if parts of the video are not visible due to panscan or other options).

For example, displaying a 1280x720 video fullscreen on a 1680x1050 screen with --video-pan-x=-0.1 would move the video 168 pixels to the left (making 128 pixels of the source video invisible).

This option is disabled if the --no-keepaspect option is used.

--video-rotate=<0-359|no>
Rotate the video clockwise, in degrees. Currently supports 90° steps only. If no is given, the video is never rotated, even if the file has rotation metadata. (The rotation value is added to the rotation metadata, which means the value 0 would rotate the video according to the rotation metadata.)
--video-stereo-mode=<no|mode>

Set the stereo 3D output mode (default: mono). This is done by inserting the stereo3d conversion filter.

The pseudo-mode no disables automatic conversion completely.

The mode mono is an alias to ml, which refers to the left frame in 2D. This is the default, which means mpv will try to show 3D movies in 2D, instead of the mangled 3D image not intended for consumption (such as showing the left and right frame side by side, etc.).

Use --video-stereo-mode=help to list all available modes. Check with the stereo3d filter documentation to see what the names mean. Note that some names refer to modes not supported by stereo3d - these modes can appear in files, but can't be handled properly by mpv.

--video-zoom=<value>

Adjust the video display scale factor by the given value. The parameter is given log 2. For example, --video-zoom=0 is unscaled, --video-zoom=1 is twice the size, --video-zoom=-2 is one fourth of the size, and so on.

This option is disabled if the --no-keepaspect option is used.

--video-align-x=<-1-1>, --video-align-y=<-1-1>

Moves the video rectangle within the black borders, which are usually added to pad the video to screen if video and screen aspect ratios are different. --video-align-y=-1 would move the video to the top of the screen (leaving a border only on the bottom), a value of 0 centers it (default), and a value of 1 would put the video at the bottom of the screen.

If video and screen aspect match perfectly, these options do nothing.

This option is disabled if the --no-keepaspect option is used.

--correct-pts, --no-correct-pts
--no-correct-pts switches mpv to a mode where video timing is determined using a fixed framerate value (either using the --fps option, or using file information). Sometimes, files with very broken timestamps can be played somewhat well in this mode. Note that video filters, subtitle rendering and audio synchronization can be completely broken in this mode.
--fps=<float>

Override video framerate. Useful if the original value is wrong or missing.

Note

Works in --no-correct-pts mode only.

--deinterlace=<yes|no|auto>

Enable or disable interlacing (default: auto, which usually means no). Interlaced video shows ugly comb-like artifacts, which are visible on fast movement. Enabling this typically inserts the yadif video filter in order to deinterlace the video, or lets the video output apply deinterlacing if supported.

This behaves exactly like the deinterlace input property (usually mapped to d).

auto is a technicality. Strictly speaking, the default for this option is deinterlacing disabled, but the auto case is needed if yadif was added to the filter chain manually with --vf. Then the core shouldn't disable deinterlacing just because the --deinterlace was not set.

--field-dominance=<auto|top|bottom>

Set first field for interlaced content.

auto:(default) If the decoder does not export the appropriate information, it falls back on top (top field first).
top:top field first
bottom:bottom field first

Note

Setting either top or bottom will flag all frames as interlaced.

--frames=<number>

Play/convert only first <number> video frames, then quit.

--frames=0 loads the file, but immediately quits before initializing playback. (Might be useful for scripts which just want to determine some file properties.)

For audio-only playback, any value greater than 0 will quit playback immediately after initialization. The value 0 works as with video.

--video-output-levels=<outputlevels>

RGB color levels used with YUV to RGB conversion. Normally, output devices such as PC monitors use full range color levels. However, some TVs and video monitors expect studio RGB levels. Providing full range output to a device expecting studio level input results in crushed blacks and whites, the reverse in dim gray blacks and dim whites.

Not all VOs support this option. Some will silently ignore it.

Available color ranges are:

auto:automatic selection (equals to full range) (default)
limited:limited range (16-235 per component), studio levels
full:full range (0-255 per component), PC levels

Note

It is advisable to use your graphics driver's color range option instead, if available.

--hwdec-codecs=<codec1,codec2,...|all>

Allow hardware decoding for a given list of codecs only. The special value all always allows all codecs.

You can get the list of allowed codecs with mpv --vd=help. Remove the prefix, e.g. instead of lavc:h264 use h264.

By default, this is set to h264,vc1,wmv3,hevc,mpeg2video,vp9. Note that the hardware acceleration special codecs like h264_vdpau are not relevant anymore, and in fact have been removed from Libav in this form.

This is usually only needed with broken GPUs, where a codec is reported as supported, but decoding causes more problems than it solves.

Example

mpv --hwdec=vdpau --vo=vdpau --hwdec-codecs=h264,mpeg2video
Enable vdpau decoding for h264 and mpeg2 only.
--vd-lavc-check-hw-profile=<yes|no>
Check hardware decoder profile (default: yes). If no is set, the highest profile of the hardware decoder is unconditionally selected, and decoding is forced even if the profile of the video is higher than that. The result is most likely broken decoding, but may also help if the detected or reported profiles are somehow incorrect.
--vd-lavc-software-fallback=<yes|no|N>
Fallback to software decoding if the hardware-accelerated decoder fails (default: 3). If this is a number, then fallback will be triggered if N frames fail to decode in a row. 1 is equivalent to yes.
--vd-lavc-bitexact
Only use bit-exact algorithms in all decoding steps (for codec testing).
--vd-lavc-fast (MPEG-2, MPEG-4, and H.264 only)
Enable optimizations which do not comply with the format specification and potentially cause problems, like simpler dequantization, simpler motion compensation, assuming use of the default quantization matrix, assuming YUV 4:2:0 and skipping a few checks to detect damaged bitstreams.
--vd-lavc-o=<key>=<value>[,<key>=<value>[,...]]

Pass AVOptions to libavcodec decoder. Note, a patch to make the o= unneeded and pass all unknown options through the AVOption system is welcome. A full list of AVOptions can be found in the FFmpeg manual.

Some options which used to be direct options can be set with this mechanism, like bug, gray, idct, ec, vismv, skip_top (was st), skip_bottom (was sb), debug.

Example

--vd-lavc-o=debug=pict

--vd-lavc-show-all=<yes|no>
Show even broken/corrupt frames (default: no). If this option is set to no, libavcodec won't output frames that were either decoded before an initial keyframe was decoded, or frames that are recognized as corrupted.
--vd-lavc-skiploopfilter=<skipvalue> (H.264 only)

Skips the loop filter (AKA deblocking) during H.264 decoding. Since the filtered frame is supposed to be used as reference for decoding dependent frames, this has a worse effect on quality than not doing deblocking on e.g. MPEG-2 video. But at least for high bitrate HDTV, this provides a big speedup with little visible quality loss.

<skipvalue> can be one of the following:

none:Never skip.
default:Skip useless processing steps (e.g. 0 size packets in AVI).
nonref:Skip frames that are not referenced (i.e. not used for decoding other frames, the error cannot "build up").
bidir:Skip B-Frames.
nonkey:Skip all frames except keyframes.
all:Skip all frames.
--vd-lavc-skipidct=<skipvalue> (MPEG-1/2 only)
Skips the IDCT step. This degrades quality a lot in almost all cases (see skiploopfilter for available skip values).
--vd-lavc-skipframe=<skipvalue>
Skips decoding of frames completely. Big speedup, but jerky motion and sometimes bad artifacts (see skiploopfilter for available skip values).
--vd-lavc-framedrop=<skipvalue>
Set framedropping mode used with --framedrop (see skiploopfilter for available skip values).
--vd-lavc-threads=<N>
Number of threads to use for decoding. Whether threading is actually supported depends on codec (default: 0). 0 means autodetect number of cores on the machine and use that, up to the maximum of 16. You can set more than 16 threads manually.

Audio

--audio-pitch-correction=<yes|no>
If this is enabled (default), playing with a speed different from normal automatically inserts the scaletempo audio filter. For details, see audio filter section.
--audio-device=<name>

Use the given audio device. This consists of the audio output name, e.g. alsa, followed by /, followed by the audio output specific device name. The default value for this option is auto, which tries every audio output in preference order with the default device.

You can list audio devices with --audio-device=help. This outputs the device name in quotes, followed by a description. The device name is what you have to pass to the --audio-device option. The list of audio devices can be retrieved by API by using the audio-device-list property.

While the option normally takes one of the strings as indicated by the methods above, you can also force the device for most AOs by building it manually. For example name/foobar forces the AO name to use the device foobar.

Example for ALSA

MPlayer and mplayer2 required you to replace any ',' with '.' and any ':' with '=' in the ALSA device name. For example, to use the device named dmix:default, you had to do:

-ao alsa:device=dmix=default

In mpv you could instead use:

--audio-device=alsa/dmix:default
--audio-exclusive=<yes|no>

Enable exclusive output mode. In this mode, the system is usually locked out, and only mpv will be able to output audio.

This only works for some audio outputs, such as wasapi and coreaudio. Other audio outputs silently ignore this options. They either have no concept of exclusive mode, or the mpv side of the implementation is missing.

--audio-fallback-to-null=<yes|no>
If no audio device can be opened, behave as if --ao=null was given. This is useful in combination with --audio-device: instead of causing an error if the selected device does not exist, the client API user (or a Lua script) could let playback continue normally, and check the current-ao and audio-device-list properties to make high-level decisions about how to continue.
--ao=<driver>
Specify the audio output drivers to be used. See `AUDIO OUTPUT DRIVERS`_ for details and descriptions of available drivers.
--af=<filter1[=parameter1:parameter2:...],filter2,...>
Specify a list of audio filters to apply to the audio stream. See `AUDIO FILTERS`_ for details and descriptions of the available filters. The option variants --af-add, --af-pre, --af-del and --af-clr exist to modify a previously specified list, but you should not need these for typical use.
--audio-spdif=<codecs>

List of codecs for which compressed audio passthrough should be used. This works for both classic S/PDIF and HDMI.

Possible codecs are ac3, dts, dts-hd. Multiple codecs can be specified by separating them with ,. dts refers to low bitrate DTS core, while dts-hd refers to DTS MA (receiver and OS support varies). If both dts and dts-hd are specified, it behaves equivalent to specifying dts-hd only.

In earlier mpv versions

Warning

There is not much reason to use this. HDMI supports uncompressed multichannel PCM, and mpv supports lossless DTS-HD decoding via FFmpeg's new DCA decoder (based on libdcadec).

--ad=<decoder1,decoder2,...[-]>

Specify a priority list of audio decoders to be used, according to their decoder name. When determining which decoder to use, the first decoder that matches the audio format is selected. If that is unavailable, the next decoder is used. Finally, it tries all other decoders that are not explicitly selected or rejected by the option.

- at the end of the list suppresses fallback on other available decoders not on the --ad list. + in front of an entry forces the decoder. Both of these should not normally be used, because they break normal decoder auto-selection! Both of these methods are deprecated.

Examples

--ad=mp3float
Prefer the FFmpeg/Libav mp3float decoder over all other MP3 decoders.
--ad=help
List all available decoders.

Warning

Enabling compressed audio passthrough (AC3 and DTS via SPDIF/HDMI) with this option is not possible. Use --audio-spdif instead.

--volume=<value>

Set the startup volume. 0 means silence, 100 means no volume reduction or amplification. Negative values can be passed for compatibility, but are treated as 0.

Since mpv 0.18.1, this always controls the internal mixer (aka "softvol").

--balance=<value>

How much left/right channels contribute to the audio. (The implementation of this feature is rather odd. It doesn't change the volumes of each channel, but instead sets up a pan matrix to mix the left and right channels.)

Deprecated.

--audio-delay=<sec>
Audio delay in seconds (positive or negative float value). Positive values delay the audio, and negative values delay the video.
--mute=<yes|no|auto>

Set startup audio mute status (default: no).

auto is a deprecated possible value that is equivalent to no.

See also: --volume.

--softvol=<no|yes|auto>

Deprecated/unfunctional. Before mpv 0.18.1, this used to control whether to use the volume controls of the audio output driver or the internal mpv volume filter.

The current behavior is that softvol is always enabled, i.e. as if this option is set to yes. The other behaviors are not available anymore, although auto almost matches current behavior in most cases.

The no behavior is still partially available through the ao-volume and ao-mute properties. But there are no options to reset these.

--audio-demuxer=<[+]name>
Use this audio demuxer type when using --audio-file. Use a '+' before the name to force it; this will skip some checks. Give the demuxer name as printed by --audio-demuxer=help.
--ad-lavc-ac3drc=<level>

Select the Dynamic Range Compression level for AC-3 audio streams. <level> is a float value ranging from 0 to 1, where 0 means no compression (which is the default) and 1 means full compression (make loud passages more silent and vice versa). Values up to 6 are also accepted, but are purely experimental. This option only shows an effect if the AC-3 stream contains the required range compression information.

The standard mandates that DRC is enabled by default, but mpv (and some other players) ignore this for the sake of better audio quality.

--ad-lavc-downmix=<yes|no>
Whether to request audio channel downmixing from the decoder (default: yes). Some decoders, like AC-3, AAC and DTS, can remix audio on decoding. The requested number of output channels is set with the --audio-channels option. Useful for playing surround audio on a stereo system.
--ad-lavc-threads=<0-16>
Number of threads to use for decoding. Whether threading is actually supported depends on codec. As of this writing, it's supported for some lossless codecs only. 0 means autodetect number of cores on the machine and use that, up to the maximum of 16 (default: 1).
--ad-lavc-o=<key>=<value>[,<key>=<value>[,...]]
Pass AVOptions to libavcodec decoder. Note, a patch to make the o= unneeded and pass all unknown options through the AVOption system is welcome. A full list of AVOptions can be found in the FFmpeg manual.
--ad-spdif-dtshd=<yes|no>, --dtshd, --no-dtshd

If DTS is passed through, use DTS-HD.

Warning

This and enabling passthrough via --ad are deprecated in favor of using --audio-spdif=dts-hd.

--audio-channels=<auto-safe|auto|layouts>

Control which audio channels are output (e.g. surround vs. stereo). There are the following possibilities:

  • --audio-channels=auto-safe

    Use the system's preferred channel layout. If there is none (such as when accessing a hardware device instead of the system mixer), force stereo. Some audio outputs might simply accept any layout and do downmixing on their own.

    This is the default.

  • --audio-channels=auto

    Send the audio device whatever it accepts, preferring the audio's original channel layout. Can cause issues with HDMI (see the warning below).

  • --audio-channels=layout1,layout2,...

    List of ,-separated channel layouts which should be allowed. Technically, this only adjusts the filter chain output to the best matching layout in the list, and passes the result to the audio API. It's possible that the audio API will select a different channel layout.

    Using this mode is recommended for direct hardware output, especially over HDMI (see HDMI warning below).

  • --audio-channels=stereo

    Force a plain stereo downmix. This is a special-case of the previous item. (See paragraphs below for implications.)

If a list of layouts is given, each item can be either an explicit channel layout name (like 5.1), or a channel number. Channel numbers refer to default layouts, e.g. 2 channels refer to stereo, 6 refers to 5.1.

See --audio-channels=help output for defined default layouts. This also lists speaker names, which can be used to express arbitrary channel layouts (e.g. fl-fr-lfe is 2.1).

If the list of channel layouts has only 1 item, the decoder is asked to produce according output. This sometimes triggers decoder-downmix, which might be different from the normal mpv downmix. (Only some decoders support remixing audio, like AC-3, AAC or DTS. You can use --ad-lavc-downmix=no to make the decoder always output its native layout.) One consequence is that --audio-channels=stereo triggers decoder downmix, while auto or auto-safe never will, even if they end up selecting stereo. This happens because the decision whether to use decoder downmix happens long before the audio device is opened.

If the channel layout of the media file (i.e. the decoder) and the AO's channel layout don't match, mpv will attempt to insert a conversion filter.

Warning

Using auto can cause issues when using audio over HDMI. The OS will typically report all channel layouts that _can_ go over HDMI, even if the receiver does not support them. If a receiver gets an unsupported channel layout, random things can happen, such as dropping the additional channels, or adding noise.

You are recommended to set an explicit whitelist of the layouts you want. For example, most A/V receivers connected via HDMI and that can do 7.1 would be served by: --audio-channels=7.1,5.1,stereo

--audio-normalize-downmix=<yes|no>

Enable/disable normalization if surround audio is downmixed to stereo (default: no). If this is disabled, downmix can cause clipping. If it's enabled, the output might be too silent. It depends on the source audio.

Technically, this changes the normalize suboption of the lavrresample audio filter, which performs the downmixing.

If downmix happens outside of mpv for some reason, this has no effect.

--audio-display=<no|attachment>

Setting this option to attachment (default) will display image attachments (e.g. album cover art) when playing audio files. It will display the first image found, and additional images are available as video tracks.

Setting this option to no disables display of video entirely when playing audio files.

This option has no influence on files with normal video tracks.

--audio-file=<filename>
Play audio from an external file while viewing a video. Each use of this option will add a new audio track. The details are similar to how --sub-file works.
--audio-format=<format>
Select the sample format used for output from the audio filter layer to the sound card. The values that <format> can adopt are listed below in the description of the format audio filter.
--audio-samplerate=<Hz>
Select the output sample rate to be used (of course sound cards have limits on this). If the sample frequency selected is different from that of the current media, the lavrresample audio filter will be inserted into the audio filter layer to compensate for the difference.
--gapless-audio=<no|yes|weak>

Try to play consecutive audio files with no silence or disruption at the point of file change. Default: weak.

no:Disable gapless audio.
yes:The audio device is opened using parameters chosen for the first file played and is then kept open for gapless playback. This means that if the first file for example has a low sample rate, then the following files may get resampled to the same low sample rate, resulting in reduced sound quality. If you play files with different parameters, consider using options such as --audio-samplerate and --audio-format to explicitly select what the shared output format will be.
weak:Normally, the audio device is kept open (using the format it was first initialized with). If the audio format the decoder output changes, the audio device is closed and reopened. This means that you will normally get gapless audio with files that were encoded using the same settings, but might not be gapless in other cases. (Unlike with yes, you don't have to worry about corner cases like the first file setting a very low quality output format, and ruining the playback of higher quality files that follow.)

Note

This feature is implemented in a simple manner and relies on audio output device buffering to continue playback while moving from one file to another. If playback of the new file starts slowly, for example because it is played from a remote network location or because you have specified cache settings that require time for the initial cache fill, then the buffered audio may run out before playback of the new file can start.

--initial-audio-sync, --no-initial-audio-sync
When starting a video file or after events such as seeking, mpv will by default modify the audio stream to make it start from the same timestamp as video, by either inserting silence at the start or cutting away the first samples. Disabling this option makes the player behave like older mpv versions did: video and audio are both started immediately even if their start timestamps differ, and then video timing is gradually adjusted if necessary to reach correct synchronization later.
--volume-max=<100.0-1000.0>, --softvol-max=<...>

Set the maximum amplification level in percent (default: 130). A value of 130 will allow you to adjust the volume up to about double the normal level.

--softvol-max is a deprecated alias and should not be used.

--audio-file-auto=<no|exact|fuzzy|all>, --no-audio-file-auto

Load additional audio files matching the video filename. The parameter specifies how external audio files are matched. exact is enabled by default.

no:Don't automatically load external audio files.
exact:Load the media filename with audio file extension (default).
fuzzy:Load all audio files containing media filename.
all:Load all audio files in the current and --audio-file-paths directories.
--audio-file-paths=<path1:path2:...>
Equivalent to --sub-paths option, but for auto-loaded audio files.
--audio-client-name=<name>
The application name the player reports to the audio API. Can be useful if you want to force a different audio profile (e.g. with PulseAudio), or to set your own application name when using libmpv.
--volume-restore-data=<string>

Used internally for use by playback resume (e.g. with quit-watch-later). Restoring value has to be done carefully, because different AOs as well as softvol can have different value ranges, and we don't want to restore volume if setting the volume changes it system wide. The normal options (like --volume) would always set the volume. This option was added for restoring volume in a safer way (by storing the method used to set the volume), and is not generally useful. Its semantics are considered private to mpv.

Do not use.

--audio-buffer=<seconds>

Set the audio output minimum buffer. The audio device might actually create a larger buffer if it pleases. If the device creates a smaller buffer, additional audio is buffered in an additional software buffer.

Making this larger will make soft-volume and other filters react slower, introduce additional issues on playback speed change, and block the player on audio format changes. A smaller buffer might lead to audio dropouts.

This option should be used for testing only. If a non-default value helps significantly, the mpv developers should be contacted.

Default: 0.2 (200 ms).

--audio-stream-silence=<yes|no>

Cash-grab consumer audio hardware (such as A/V receivers) often ignore initial audio sent over HDMI. This can happen every time audio over HDMI is stopped and resumed. In order to compensate for this, you can enable this option to not to stop and restart audio on seeks, and fill the gaps with silence. Likewise, when pausing playback, audio is not stopped, and silence is played while paused. Note that if no audio track is selected, the audio device will still be closed immediately.

Not all AOs support this.

--audio-wait-open=<secs>
This makes sense for use with --audio-stream-silence=yes. If this option is given, the player will wait for the given amount of seconds after opening the audio device before sending actual audio data to it. Useful if your expensive hardware discards the first 1 or 2 seconds of audio data sent to it. If --audio-stream-silence=yes is not set, this option will likely just waste time.

Subtitles

Note

Changing styling and position does not work with all subtitles. Image-based subtitles (DVD, Bluray/PGS, DVB) cannot changed for fundamental reasons. Subtitles in ASS format are normally not changed intentionally, but overriding them can be controlled with --sub-ass-style-override.

Previously some options working on text subtitles were called --sub-text-*, they are now named --sub-*, and those specifically for ASS have been renamed from --ass-* to --sub-ass-*. They are now all in this section.

--sub-demuxer=<[+]name>
Force subtitle demuxer type for --sub-file. Give the demuxer name as printed by --sub-demuxer=help.
--sub-delay=<sec>
Delays subtitles by <sec> seconds. Can be negative.
--sub-file=subtitlefile

Add a subtitle file to the list of external subtitles.

If you use --sub-file only once, this subtitle file is displayed by default.

If --sub-file is used multiple times, the subtitle to use can be switched at runtime by cycling subtitle tracks. It's possible to show two subtitles at once: use --sid to select the first subtitle index, and --secondary-sid to select the second index. (The index is printed on the terminal output after the --sid= in the list of streams.)

--secondary-sid=<ID|auto|no>

Select a secondary subtitle stream. This is similar to --sid. If a secondary subtitle is selected, it will be rendered as toptitle (i.e. on the top of the screen) alongside the normal subtitle, and provides a way to render two subtitles at once.

There are some caveats associated with this feature. For example, bitmap subtitles will always be rendered in their usual position, so selecting a bitmap subtitle as secondary subtitle will result in overlapping subtitles. Secondary subtitles are never shown on the terminal if video is disabled.

Note

Styling and interpretation of any formatting tags is disabled for the secondary subtitle. Internally, the same mechanism as --no-sub-ass is used to strip the styling.

Note

If the main subtitle stream contains formatting tags which display the subtitle at the top of the screen, it will overlap with the secondary subtitle. To prevent this, you could use --no-sub-ass to disable styling in the main subtitle stream.

--sub-scale=<0-100>

Factor for the text subtitle font size (default: 1).

Note

This affects ASS subtitles as well, and may lead to incorrect subtitle rendering. Use with care, or use --sub-font-size instead.

--sub-scale-by-window=<yes|no>

Whether to scale subtitles with the window size (default: yes). If this is disabled, changing the window size won't change the subtitle font size.

Like --sub-scale, this can break ASS subtitles.

--sub-scale-with-window=<yes|no>

Make the subtitle font size relative to the window, instead of the video. This is useful if you always want the same font size, even if the video doesn't cover the window fully, e.g. because screen aspect and window aspect mismatch (and the player adds black bars).

Default: yes.

This option is misnamed. The difference to the confusingly similar sounding option --sub-scale-by-window is that --sub-scale-with-window still scales with the approximate window size, while the other option disables this scaling.

Affects plain text subtitles only (or ASS if --sub-ass-style-override is set high enough).

--sub-ass-scale-with-window=<yes|no>

Like --sub-scale-with-window, but affects subtitles in ASS format only. Like --sub-scale, this can break ASS subtitles.

Default: no.

--embeddedfonts, --no-embeddedfonts
Use fonts embedded in Matroska container files and ASS scripts (default: enabled). These fonts can be used for SSA/ASS subtitle rendering.
--sub-pos=<0-100>

Specify the position of subtitles on the screen. The value is the vertical position of the subtitle in % of the screen height.

Note

This affects ASS subtitles as well, and may lead to incorrect subtitle rendering. Use with care, or use --sub-margin-y instead.

--sub-speed=<0.1-10.0>

Multiply the subtitle event timestamps with the given value. Can be used to fix the playback speed for frame-based subtitle formats. Affects text subtitles only.

Example

--sub-speed=25/23.976` plays frame based subtitles which have been loaded assuming a framerate of 23.976 at 25 FPS.

--sub-ass-force-style=<[Style.]Param=Value[,...]>

Override some style or script info parameters.

Examples

  • --sub-ass-force-style=FontName=Arial,Default.Bold=1
  • --sub-ass-force-style=PlayResY=768

Note

Using this option may lead to incorrect subtitle rendering.

--sub-ass-hinting=<none|light|normal|native>

Set font hinting type. <type> can be:

none:no hinting (default)
light:FreeType autohinter, light mode
normal:FreeType autohinter, normal mode
native:font native hinter

Warning

Enabling hinting can lead to mispositioned text (in situations it's supposed to match up video background), or reduce the smoothness of animations with some badly authored ASS scripts. It is recommended to not use this option, unless really needed.

--sub-ass-line-spacing=<value>
Set line spacing value for SSA/ASS renderer.
--sub-ass-shaper=<simple|complex>

Set the text layout engine used by libass.

simple:uses Fribidi only, fast, doesn't render some languages correctly
complex:uses HarfBuzz, slower, wider language support

complex is the default. If libass hasn't been compiled against HarfBuzz, libass silently reverts to simple.

--sub-ass-styles=<filename>

Load all SSA/ASS styles found in the specified file and use them for rendering text subtitles. The syntax of the file is exactly like the [V4 Styles] / [V4+ Styles] section of SSA/ASS.

Note

Using this option may lead to incorrect subtitle rendering.

--sub-ass-style-override=<yes|no|force|signfs|strip>

Control whether user style overrides should be applied.

yes:Apply all the --sub-ass-* style override options. Changing the default for any of these options can lead to incorrect subtitle rendering (default).
signfs:like yes, but apply --sub-scale only to signs
no:Render subtitles as forced by subtitle scripts.
force:Try to force the font style as defined by the --sub-* options. Can break rendering easily.
strip:Radically strip all ASS tags and styles from the subtitle. This is equivalent to the old --no-ass / --no-sub-ass options.
--sub-ass-force-margins

Enables placing toptitles and subtitles in black borders when they are available, if the subtitles are in the ASS format.

Default: no.

--sub-use-margins

Enables placing toptitles and subtitles in black borders when they are available, if the subtitles are in a plain text format (or ASS if --sub-ass-style-override is set high enough).

Default: yes.

Renamed from --sub-ass-use-margins. To place ASS subtitles in the borders too (like the old option did), also add --sub-ass-force-margins.

--sub-ass-vsfilter-aspect-compat=<yes|no>

Stretch SSA/ASS subtitles when playing anamorphic videos for compatibility with traditional VSFilter behavior. This switch has no effect when the video is stored with square pixels.

The renderer historically most commonly used for the SSA/ASS subtitle formats, VSFilter, had questionable behavior that resulted in subtitles being stretched too if the video was stored in anamorphic format that required scaling for display. This behavior is usually undesirable and newer VSFilter versions may behave differently. However, many existing scripts compensate for the stretching by modifying things in the opposite direction. Thus, if such scripts are displayed "correctly", they will not appear as intended. This switch enables emulation of the old VSFilter behavior (undesirable but expected by many existing scripts).

Enabled by default.

--sub-ass-vsfilter-blur-compat=<yes|no>

Scale \blur tags by video resolution instead of script resolution (enabled by default). This is bug in VSFilter, which according to some, can't be fixed anymore in the name of compatibility.

Note that this uses the actual video resolution for calculating the offset scale factor, not what the video filter chain or the video output use.

--sub-ass-vsfilter-color-compat=<basic|full|force-601|no>

Mangle colors like (xy-)vsfilter do (default: basic). Historically, VSFilter was not color space aware. This was no problem as long as the color space used for SD video (BT.601) was used. But when everything switched to HD (BT.709), VSFilter was still converting RGB colors to BT.601, rendered them into the video frame, and handled the frame to the video output, which would use BT.709 for conversion to RGB. The result were mangled subtitle colors. Later on, bad hacks were added on top of the ASS format to control how colors are to be mangled.

basic:Handle only BT.601->BT.709 mangling, if the subtitles seem to indicate that this is required (default).
full:Handle the full YCbCr Matrix header with all video color spaces supported by libass and mpv. This might lead to bad breakages in corner cases and is not strictly needed for compatibility (hopefully), which is why this is not default.
force-601:Force BT.601->BT.709 mangling, regardless of subtitle headers or video color space.
no:Disable color mangling completely. All colors are RGB.

Choosing anything other than no will make the subtitle color depend on the video color space, and it's for example in theory not possible to reuse a subtitle script with another video file. The --sub-ass-style-override option doesn't affect how this option is interpreted.

--stretch-dvd-subs=<yes|no>

Stretch DVD subtitles when playing anamorphic videos for better looking fonts on badly mastered DVDs. This switch has no effect when the video is stored with square pixels - which for DVD input cannot be the case though.

Many studios tend to use bitmap fonts designed for square pixels when authoring DVDs, causing the fonts to look stretched on playback on DVD players. This option fixes them, however at the price of possibly misaligning some subtitles (e.g. sign translations).

Disabled by default.

--stretch-image-subs-to-screen=<yes|no>

Stretch DVD and other image subtitles to the screen, ignoring the video margins. This has a similar effect as --sub-use-margins for text subtitles, except that the text itself will be stretched, not only just repositioned. (At least in general it is unavoidable, as an image bitmap can in theory consist of a single bitmap covering the whole screen, and the player won't know where exactly the text parts are located.)

This option does not display subtitles correctly. Use with care.

Disabled by default.

--image-subs-video-resolution=<yes|no>
Override the image subtitle resolution with the video resolution (default: no). Normally, the subtitle canvas is fit into the video canvas (e.g. letterboxed). Setting this option uses the video size as subtitle canvas size. Can be useful to test broken subtitles, which often happen when the video was trancoded, while attempting to keep the old subtitles.
--sub-ass, --no-sub-ass

Render ASS subtitles natively (enabled by default).

Note

This has been deprecated by --sub-ass-style-override=strip. You also may need --embeddedfonts=no to get the same behavior. Also, using --sub-ass-style-override=force should give better results without breaking subtitles too much.

If --no-sub-ass is specified, all tags and style declarations are stripped and ignored on display. The subtitle renderer uses the font style as specified by the --sub- options instead.

Note

Using --no-sub-ass may lead to incorrect or completely broken rendering of ASS/SSA subtitles. It can sometimes be useful to forcibly override the styling of ASS subtitles, but should be avoided in general.

--sub-auto=<no|exact|fuzzy|all>, --no-sub-auto

Load additional subtitle files matching the video filename. The parameter specifies how external subtitle files are matched. exact is enabled by default.

no:Don't automatically load external subtitle files.
exact:Load the media filename with subtitle file extension (default).
fuzzy:Load all subs containing media filename.
all:Load all subs in the current and --sub-paths directories.
--sub-codepage=<codepage>

You can use this option to specify the subtitle codepage. uchardet will be used to guess the charset. (If mpv was not compiled with uchardet, then utf-8 is the effective default.)

The default value for this option is auto, which enables autodetection.

The following steps are taken to determine the final codepage, in order:

  • if the specific codepage has a +, use that codepage
  • if the data looks like UTF-8, assume it is UTF-8
  • if --sub-codepage is set to a specific codepage, use that
  • run uchardet, and if successful, use that
  • otherwise, use UTF-8-BROKEN

Examples

  • --sub-codepage=latin2 Use Latin 2 if input is not UTF-8.
  • --sub-codepage=+cp1250 Always force recoding to cp1250.

The pseudo codepage UTF-8-BROKEN is used internally. If it's set, subtitles are interpreted as UTF-8 with "Latin 1" as fallback for bytes which are not valid UTF-8 sequences. iconv is never involved in this mode.

This option changed in mpv 0.23.0. Support for the old syntax was fully removed in mpv 0.24.0.

--sub-fix-timing, --no-sub-fix-timing
By default, subtitle timing is adjusted to remove minor gaps or overlaps between subtitles (if the difference is smaller than 210 ms, the gap or overlap is removed).
--sub-forced-only
Display only forced subtitles for the DVD subtitle stream selected by e.g. --slang.
--sub-fps=<rate>

Specify the framerate of the subtitle file (default: video fps). Affects text subtitles only.

Note

<rate> > video fps speeds the subtitles up for frame-based subtitle files and slows them down for time-based ones.

See also: --sub-speed.

--sub-gauss=<0.0-3.0>

Apply Gaussian blur to image subtitles (default: 0). This can help to make pixelated DVD/Vobsubs look nicer. A value other than 0 also switches to software subtitle scaling. Might be slow.

Note

Never applied to text subtitles.

--sub-gray

Convert image subtitles to grayscale. Can help to make yellow DVD/Vobsubs look nicer.

Note

Never applied to text subtitles.

--sub-paths=<path1:path2:...>

Specify extra directories to search for subtitles matching the video. Multiple directories can be separated by ":" (";" on Windows). Paths can be relative or absolute. Relative paths are interpreted relative to video file directory.

Example

Assuming that /path/to/video/video.avi is played and --sub-paths=sub:subtitles:/tmp/subs is specified, mpv searches for subtitle files in these directories:

  • /path/to/video/
  • /path/to/video/sub/
  • /path/to/video/subtitles/
  • /tmp/subs/
  • the sub configuration subdirectory (usually ~/.config/mpv/sub/)
--sub-visibility, --no-sub-visibility
Can be used to disable display of subtitles, but still select and decode them.
--sub-clear-on-seek
(Obscure, rarely useful.) Can be used to play broken mkv files with duplicate ReadOrder fields. ReadOrder is the first field in a Matroska-style ASS subtitle packets. It should be unique, and libass uses it for fast elimination of duplicates. This option disables caching of subtitles across seeks, so after a seek libass can't eliminate subtitle packets with the same ReadOrder as earlier packets.
--teletext-page=<1-999>
This works for dvb_teletext subtitle streams, and if FFmpeg has been compiled with support for it.
--sub-font=<name>

Specify font to use for subtitles that do not themselves specify a particular font. The default is sans-serif.

Examples

  • --sub-font='Bitstream Vera Sans'
  • --sub-font='MS Comic Sans'

Note

The --sub-font option (and many other style related --sub- options) are ignored when ASS-subtitles are rendered, unless the --no-sub-ass option is specified.

This used to support fontconfig patterns. Starting with libass 0.13.0, this stopped working.

--sub-font-size=<size>

Specify the sub font size. The unit is the size in scaled pixels at a window height of 720. The actual pixel size is scaled with the window height: if the window height is larger or smaller than 720, the actual size of the text increases or decreases as well.

Default: 55.

--sub-back-color=<color>
See --sub-color. Color used for sub text background.
--sub-blur=<0..20.0>
Gaussian blur factor. 0 means no blur applied (default).
--sub-bold=<yes|no>
Format text on bold.
--sub-italic=<yes|no>
Format text on italic.
--sub-border-color=<color>

See --sub-color. Color used for the sub font border.

Note

ignored when --sub-back-color is specified (or more exactly: when that option is not set to completely transparent).

--sub-border-size=<size>

Size of the sub font border in scaled pixels (see --sub-font-size for details). A value of 0 disables borders.

Default: 3.

--sub-color=<color>

Specify the color used for unstyled text subtitles.

The color is specified in the form r/g/b, where each color component is specified as number in the range 0.0 to 1.0. It's also possible to specify the transparency by using r/g/b/a, where the alpha value 0 means fully transparent, and 1.0 means opaque. If the alpha component is not given, the color is 100% opaque.

Passing a single number to the option sets the sub to gray, and the form gray/a lets you specify alpha additionally.

Examples

  • --sub-color=1.0/0.0/0.0 set sub to opaque red
  • --sub-color=1.0/0.0/0.0/0.75 set sub to opaque red with 75% alpha
  • --sub-color=0.5/0.75 set sub to 50% gray with 75% alpha

Alternatively, the color can be specified as a RGB hex triplet in the form #RRGGBB, where each 2-digit group expresses a color value in the range 0 (00) to 255 (FF). For example, #FF0000 is red. This is similar to web colors. Alpha is given with #AARRGGBB.

Examples

  • --sub-color='#FF0000' set sub to opaque red
  • --sub-color='#C0808080' set sub to 50% gray with 75% alpha
--sub-margin-x=<size>

Left and right screen margin for the subs in scaled pixels (see --sub-font-size for details).

This option specifies the distance of the sub to the left, as well as at which distance from the right border long sub text will be broken.

Default: 25.

--sub-margin-y=<size>

Top and bottom screen margin for the subs in scaled pixels (see --sub-font-size for details).

This option specifies the vertical margins of unstyled text subtitles. If you just want to raise the vertical subtitle position, use --sub-pos.

Default: 22.

--sub-align-x=<left|center|right>

Control to which corner of the screen text subtitles should be aligned to (default: center).

Never applied to ASS subtitles, except in --no-sub-ass mode. Likewise, this does not apply to image subtitles.

--sub-align-y=<top|center|bottom>
Vertical position (default: bottom). Details see --sub-align-x.
--sub-shadow-color=<color>
See --sub-color. Color used for sub text shadow.
--sub-shadow-offset=<size>

Displacement of the sub text shadow in scaled pixels (see --sub-font-size for details). A value of 0 disables shadows.

Default: 0.

--sub-spacing=<size>

Horizontal sub font spacing in scaled pixels (see --sub-font-size for details). This value is added to the normal letter spacing. Negative values are allowed.

Default: 0.

Window

--title=<string>

Set the window title. This is used for the video window, and if possible, also sets the audio stream title.

Properties are expanded. (See `Property Expansion`_.)

Warning

There is a danger of this causing significant CPU usage, depending on the properties used. Changing the window title is often a slow operation, and if the title changes every frame, playback can be ruined.

--screen=<default|0-32>

In multi-monitor configurations (i.e. a single desktop that spans across multiple displays), this option tells mpv which screen to display the video on.

Note (X11)

This option does not work properly with all window managers. In these cases, you can try to use --geometry to position the window explicitly. It's also possible that the window manager provides native features to control which screens application windows should use.

See also --fs-screen.

--fullscreen, --fs
Fullscreen playback.
--fs-screen=<all|current|0-32>

In multi-monitor configurations (i.e. a single desktop that spans across multiple displays), this option tells mpv which screen to go fullscreen to. If default is provided mpv will fallback on using the behavior depending on what the user provided with the screen option.

Note (X11)

This option does works properly only with window managers which understand the EWMH _NET_WM_FULLSCREEN_MONITORS hint.

Note (OS X)

all does not work on OS X and will behave like current.

See also --screen.

--keep-open=<yes|no|always>

Do not terminate when playing or seeking beyond the end of the file, and there is not next file to be played (and --loop is not used). Instead, pause the player. When trying to seek beyond end of the file, the player will attempt to seek to the last frame.

The following arguments can be given:

no:If the current file ends, go to the next file or terminate. (Default.)
yes:Don't terminate if the current file is the last playlist entry. Equivalent to --keep-open without arguments.
always:Like yes, but also applies to files before the last playlist entry. This means playback will never automatically advance to the next file.

Note

This option is not respected when using --frames. Explicitly skipping to the next file if the binding uses force will terminate playback as well.

Also, if errors or unusual circumstances happen, the player can quit anyway.

Since mpv 0.6.0, this doesn't pause if there is a next file in the playlist, or the playlist is looped. Approximately, this will pause when the player would normally exit, but in practice there are corner cases in which this is not the case (e.g. mpv --keep-open file.mkv /dev/null will play file.mkv normally, then fail to open /dev/null, then exit). (In mpv 0.8.0, always was introduced, which restores the old behavior.)

--image-display-duration=<seconds|inf>

If the current file is an image, play the image for the given amount of seconds (default: 1). inf means the file is kept open forever (until the user stops playback manually).

Unlike --keep-open, the player is not paused, but simply continues playback until the time has elapsed. (It should not use any resources during "playback".)

This affects image files, which are defined as having only 1 video frame and no audio. The player may recognize certain non-images as images, for example if --length is used to reduce the length to 1 frame, or if you seek to the last frame.

This option does not affect the framerate used for mf:// or --merge-files. For that, use --mf-fps instead.

--force-window=<yes|no|immediate>

Create a video output window even if there is no video. This can be useful when pretending that mpv is a GUI application. Currently, the window always has the size 640x480, and is subject to --geometry, --autofit, and similar options.

Warning

The window is created only after initialization (to make sure default window placement still works if the video size is different from the --force-window default window size). This can be a problem if initialization doesn't work perfectly, such as when opening URLs with bad network connection, or opening broken video files. The immediate mode can be used to create the window always on program start, but this may cause other issues.

--taskbar-progress, --no-taskbar-progress

(Windows only) Enable/disable playback progress rendering in taskbar (Windows 7 and above).

Enabled by default.

--ontop

Makes the player window stay on top of other windows.

On Windows, if combined with fullscreen mode, this causes mpv to be treated as exclusive fullscreen window that bypasses the Desktop Window Manager.

--border, --no-border
Play video with window border and decorations. Since this is on by default, use --no-border to disable the standard window decorations.
--fit-border, --no-fit-border
(Windows only) Fit the whole window with border and decorations on the screen. Since this is on by default, use --no-fit-border to make mpv try to only fit client area with video on the screen. This behavior only applied to window/video with size exceeding size of the screen.
--on-all-workspaces
(X11 only) Show the video window on all virtual desktops.
--geometry=<[W[xH]][+-x+-y]>, --geometry=<x:y>

Adjust the initial window position or size. W and H set the window size in pixels. x and y set the window position, measured in pixels from the top-left corner of the screen to the top-left corner of the image being displayed. If a percentage sign (%) is given after the argument, it turns the value into a percentage of the screen size in that direction. Positions are specified similar to the standard X11 --geometry option format, in which e.g. +10-50 means "place 10 pixels from the left border and 50 pixels from the lower border" and "--20+-10" means "place 20 pixels beyond the right and 10 pixels beyond the top border".

If an external window is specified using the --wid option, this option is ignored.

The coordinates are relative to the screen given with --screen for the video output drivers that fully support --screen.

Note

Generally only supported by GUI VOs. Ignored for encoding.

Note (X11)

This option does not work properly with all window managers.

Examples

50:40
Places the window at x=50, y=40.
50%:50%
Places the window in the middle of the screen.
100%:100%
Places the window at the bottom right corner of the screen.
50%
Sets the window width to half the screen width. Window height is set so that the window has the video aspect ratio.
50%x50%
Forces the window width and height to half the screen width and height. Will show black borders to compensate for the video aspect ratio (with most VOs and without --no-keepaspect).
50%+10+10
Sets the window to half the screen widths, and positions it 10 pixels below/left of the top left corner of the screen.

See also --autofit and --autofit-larger for fitting the window into a given size without changing aspect ratio.

--autofit=<[W[xH]]>

Set the initial window size to a maximum size specified by WxH, without changing the window's aspect ratio. The size is measured in pixels, or if a number is followed by a percentage sign (%), in percents of the screen size.

This option never changes the aspect ratio of the window. If the aspect ratio mismatches, the window's size is reduced until it fits into the specified size.

Window position is not taken into account, nor is it modified by this option (the window manager still may place the window differently depending on size). Use --geometry to change the window position. Its effects are applied after this option.

See --geometry for details how this is handled with multi-monitor setups.

Use --autofit-larger instead if you just want to limit the maximum size of the window, rather than always forcing a window size.

Use --geometry if you want to force both window width and height to a specific size.

Note

Generally only supported by GUI VOs. Ignored for encoding.

Examples

70%
Make the window width 70% of the screen size, keeping aspect ratio.
1000
Set the window width to 1000 pixels, keeping aspect ratio.
70%x60%
Make the window as large as possible, without being wider than 70% of the screen width, or higher than 60% of the screen height.
--autofit-larger=<[W[xH]]>

This option behaves exactly like --autofit, except the window size is only changed if the window would be larger than the specified size.

Example

90%x80%
If the video is larger than 90% of the screen width or 80% of the screen height, make the window smaller until either its width is 90% of the screen, or its height is 80% of the screen.
--autofit-smaller=<[W[xH]]>

This option behaves exactly like --autofit, except that it sets the minimum size of the window (just as --autofit-larger sets the maximum).

Example

500x500
Make the window at least 500 pixels wide and 500 pixels high (depending on the video aspect ratio, the width or height will be larger than 500 in order to keep the aspect ratio the same).
--window-scale=<factor>

Resize the video window to a multiple (or fraction) of the video size. This option is applied before --autofit and other options are applied (so they override this option).

For example, --window-scale=0.5 would show the window at half the video size.

--cursor-autohide=<number|no|always>
Make mouse cursor automatically hide after given number of milliseconds. no will disable cursor autohide. always means the cursor will stay hidden.
--cursor-autohide-fs-only
If this option is given, the cursor is always visible in windowed mode. In fullscreen mode, the cursor is shown or hidden according to --cursor-autohide.
--no-fixed-vo, --fixed-vo
--no-fixed-vo enforces closing and reopening the video window for multiple files (one (un)initialization for each file).
--force-rgba-osd-rendering
Change how some video outputs render the OSD and text subtitles. This does not change appearance of the subtitles and only has performance implications. For VOs which support native ASS rendering (like vdpau, opengl, direct3d), this can be slightly faster or slower, depending on GPU drivers and hardware. For other VOs, this just makes rendering slower.
--force-window-position
Forcefully move mpv's video output window to default location whenever there is a change in video parameters, video stream or file. This used to be the default behavior. Currently only affects X11 VOs.

--heartbeat-cmd=<command>

Warning

This option is redundant with Lua scripting. Further, it shouldn't be needed for disabling screensaver anyway, since mpv will call xdg-screensaver when using X11 backend. As a consequence this option has been deprecated with no direct replacement.

Command that is executed every 30 seconds during playback via system() - i.e. using the shell. The time between the commands can be customized with the --heartbeat-interval option. The command is not run while playback is paused.

Note

mpv uses this command without any checking. It is your responsibility to ensure it does not cause security problems (e.g. make sure to use full paths if "." is in your path like on Windows). It also only works when playing video (i.e. not with --no-video but works with --vo=null).

This can be "misused" to disable screensavers that do not support the proper X API (see also --stop-screensaver). If you think this is too complicated, ask the author of the screensaver program to support the proper X APIs. Note that the --stop-screensaver does not influence the heartbeat code at all.

Example for xscreensaver

mpv --heartbeat-cmd="xscreensaver-command -deactivate" file

Example for GNOME screensaver

mpv --heartbeat-cmd="gnome-screensaver-command --deactivate" file

--heartbeat-interval=<sec>

Time between --heartbeat-cmd invocations in seconds (default: 30).

Note

This does not affect the normal screensaver operation in any way.

--no-keepaspect, --keepaspect
--no-keepaspect will always stretch the video to window size, and will disable the window manager hints that force the window aspect ratio. (Ignored in fullscreen mode.)
--no-keepaspect-window, --keepaspect-window
--keepaspect-window (the default) will lock the window size to the video aspect. --no-keepaspect-window disables this behavior, and will instead add black bars if window aspect and video aspect mismatch. Whether this actually works depends on the VO backend. (Ignored in fullscreen mode.)
--monitoraspect=<ratio>

Set the aspect ratio of your monitor or TV screen. A value of 0 disables a previous setting (e.g. in the config file). Overrides the --monitorpixelaspect setting if enabled.

See also --monitorpixelaspect and --video-aspect.

Examples

  • --monitoraspect=4:3 or --monitoraspect=1.3333
  • --monitoraspect=16:9 or --monitoraspect=1.7777
--hidpi-window-scale, --no-hidpi-window-scale
(OS X and X11 only) Scale the window size according to the backing scale factor (default: yes). On regular HiDPI resolutions the window opens with double the size but appears as having the same size as on none-HiDPI resolutions. This is the default OS X behavior.
--monitorpixelaspect=<ratio>
Set the aspect of a single pixel of your monitor or TV screen (default: 1). A value of 1 means square pixels (correct for (almost?) all LCDs). See also --monitoraspect and --video-aspect.
--stop-screensaver, --no-stop-screensaver

Turns off the screensaver (or screen blanker and similar mechanisms) at startup and turns it on again on exit (default: yes). The screensaver is always re-enabled when the player is paused.

This is not supported on all video outputs or platforms. Sometimes it is implemented, but does not work (known to happen with GNOME). You might be able to work around this using --heartbeat-cmd instead.

--wid=<ID>

This tells mpv to attach to an existing window. If a VO is selected that supports this option, it will use that window for video output. mpv will scale the video to the size of this window, and will add black bars to compensate if the aspect ratio of the video is different.

On X11, the ID is interpreted as a Window on X11. Unlike MPlayer/mplayer2, mpv always creates its own window, and sets the wid window as parent. The window will always be resized to cover the parent window fully. The value 0 is interpreted specially, and mpv will draw directly on the root window.

On win32, the ID is interpreted as HWND. Pass it as value cast to intptr_t. mpv will create its own window, and set the wid window as parent, like with X11.

On OSX/Cocoa, the ID is interpreted as NSView*. Pass it as value cast to intptr_t. mpv will create its own sub-view. Because OSX does not support window embedding of foreign processes, this works only with libmpv, and will crash when used from the command line.

--no-window-dragging
Don't move the window when clicking on it and moving the mouse pointer.
--x11-name
Set the window class name for X11-based video output methods.
--x11-netwm=<yes|no|auto>

(X11 only) Control the use of NetWM protocol features.

This may or may not help with broken window managers. This provides some functionality that was implemented by the now removed --fstype option. Actually, it is not known to the developers to which degree this option was needed, so feedback is welcome.

Specifically, yes will force use of NetWM fullscreen support, even if not advertised by the WM. This can be useful for WMs that are broken on purpose, like XMonad. (XMonad supposedly doesn't advertise fullscreen support, because Flash uses it. Apparently, applications which want to use fullscreen anyway are supposed to either ignore the NetWM support hints, or provide a workaround. Shame on XMonad for deliberately breaking X protocols (as if X isn't bad enough already).

By default, NetWM support is autodetected (auto).

This option might be removed in the future.

--x11-bypass-compositor=<yes|no|fs-only|never>

If set to yes, then ask the compositor to unredirect the mpv window (default: fs-only). This uses the _NET_WM_BYPASS_COMPOSITOR hint.

fs-only asks the window manager to disable the compositor only in fullscreen mode.

no sets _NET_WM_BYPASS_COMPOSITOR to 0, which is the default value as declared by the EWMH specification, i.e. no change is done.

never asks the window manager to never disable the compositor.

Disc Devices

--cdrom-device=<path>
Specify the CD-ROM device (default: /dev/cdrom).
--dvd-device=<path>

Specify the DVD device or .iso filename (default: /dev/dvd). You can also specify a directory that contains files previously copied directly from a DVD (with e.g. vobcopy).

Example

mpv dvd:// --dvd-device=/path/to/dvd/

--bluray-device=<path>

(Blu-ray only) Specify the Blu-ray disc location. Must be a directory with Blu-ray structure.

Example

mpv bd:// --bluray-device=/path/to/bd/

--cdda-...
These options can be used to tune the CD Audio reading feature of mpv.
--cdda-speed=<value>
Set CD spin speed.
--cdda-paranoia=<0-2>

Set paranoia level. Values other than 0 seem to break playback of anything but the first track.

0:disable checking (default)
1:overlap checking only
2:full data correction and verification
--cdda-sector-size=<value>
Set atomic read size.
--cdda-overlap=<value>
Force minimum overlap search during verification to <value> sectors.
--cdda-toc-bias
Assume that the beginning offset of track 1 as reported in the TOC will be addressed as LBA 0. Some discs need this for getting track boundaries correctly.
--cdda-toc-offset=<value>
Add <value> sectors to the values reported when addressing tracks. May be negative.
--cdda-skip=<yes|no>
(Never) accept imperfect data reconstruction.
--cdda-cdtext=<yes|no>
Print CD text. This is disabled by default, because it ruins performance with CD-ROM drives for unknown reasons.
--dvd-speed=<speed>

Try to limit DVD speed (default: 0, no change). DVD base speed is 1385 kB/s, so an 8x drive can read at speeds up to 11080 kB/s. Slower speeds make the drive more quiet. For watching DVDs, 2700 kB/s should be quiet and fast enough. mpv resets the speed to the drive default value on close. Values of at least 100 mean speed in kB/s. Values less than 100 mean multiples of 1385 kB/s, i.e. --dvd-speed=8 selects 11080 kB/s.

Note

You need write access to the DVD device to change the speed.

--dvd-angle=<ID>
Some DVDs contain scenes that can be viewed from multiple angles. This option tells mpv which angle to use (default: 1).

Equalizer

--brightness=<-100-100>
Adjust the brightness of the video signal (default: 0). Not supported by all video output drivers.
--contrast=<-100-100>
Adjust the contrast of the video signal (default: 0). Not supported by all video output drivers.
--saturation=<-100-100>
Adjust the saturation of the video signal (default: 0). You can get grayscale output with this option. Not supported by all video output drivers.
--gamma=<-100-100>
Adjust the gamma of the video signal (default: 0). Not supported by all video output drivers.
--hue=<-100-100>
Adjust the hue of the video signal (default: 0). You can get a colored negative of the image with this option. Not supported by all video output drivers.

Demuxer

--demuxer=<[+]name>
Force demuxer type. Use a '+' before the name to force it; this will skip some checks. Give the demuxer name as printed by --demuxer=help.
--demuxer-lavf-analyzeduration=<value>
Maximum length in seconds to analyze the stream properties.
--demuxer-lavf-probescore=<1-100>
Minimum required libavformat probe score. Lower values will require less data to be loaded (makes streams start faster), but makes file format detection less reliable. Can be used to force auto-detected libavformat demuxers, even if libavformat considers the detection not reliable enough. (Default: 26.)
--demuxer-lavf-allow-mimetype=<yes|no>

Allow deriving the format from the HTTP MIME type (default: yes). Set this to no in case playing things from HTTP mysteriously fails, even though the same files work from local disk.

This is default in order to reduce latency when opening HTTP streams.

--demuxer-lavf-format=<name>
Force a specific libavformat demuxer.
--demuxer-lavf-hacks=<yes|no>
By default, some formats will be handled differently from other formats by explicitly checking for them. Most of these compensate for weird or imperfect behavior from libavformat demuxers. Passing no disables these. For debugging and testing only.
--demuxer-lavf-genpts-mode=<no|lavf>
Mode for deriving missing packet PTS values from packet DTS. lavf enables libavformat's genpts option. no disables it. This used to be enabled by default, but then it was deemed as not needed anymore. Enabling this might help with timestamp problems, or make them worse.
--demuxer-lavf-o=<key>=<value>[,<key>=<value>[,...]]

Pass AVOptions to libavformat demuxer.

Note, a patch to make the o= unneeded and pass all unknown options through the AVOption system is welcome. A full list of AVOptions can be found in the FFmpeg manual. Note that some options may conflict with mpv options.

Example

--demuxer-lavf-o=fflags=+ignidx

--demuxer-lavf-probesize=<value>
Maximum amount of data to probe during the detection phase. In the case of MPEG-TS this value identifies the maximum number of TS packets to scan.
--demuxer-lavf-buffersize=<value>
Size of the stream read buffer allocated for libavformat in bytes (default: 32768). Lowering the size could lower latency. Note that libavformat might reallocate the buffer internally, or not fully use all of it.
--demuxer-lavf-cryptokey=<hexstring>
Encryption key the demuxer should use. This is the raw binary data of the key converted to a hexadecimal string.
--demuxer-mkv-subtitle-preroll=<yes|index|no>, --mkv-subtitle-preroll

Try harder to show embedded soft subtitles when seeking somewhere. Normally, it can happen that the subtitle at the seek target is not shown due to how some container file formats are designed. The subtitles appear only if seeking before or exactly to the position a subtitle first appears. To make this worse, subtitles are often timed to appear a very small amount before the associated video frame, so that seeking to the video frame typically does not demux the subtitle at that position.

Enabling this option makes the demuxer start reading data a bit before the seek target, so that subtitles appear correctly. Note that this makes seeking slower, and is not guaranteed to always work. It only works if the subtitle is close enough to the seek target.

Works with the internal Matroska demuxer only. Always enabled for absolute and hr-seeks, and this option changes behavior with relative or imprecise seeks only.

You can use the --demuxer-mkv-subtitle-preroll-secs option to specify how much data the demuxer should pre-read at most in order to find subtitle packets that may overlap. Setting this to 0 will effectively disable this preroll mechanism. Setting a very large value can make seeking very slow, and an extremely large value would completely reread the entire file from start to seek target on every seek - seeking can become slower towards the end of the file. The details are messy, and the value is actually rounded down to the cluster with the previous video keyframe.

Some files, especially files muxed with newer mkvmerge versions, have information embedded that can be used to determine what subtitle packets overlap with a seek target. In these cases, mpv will reduce the amount of data read to a minimum. (Although it will still read all data between the cluster that contains the first wanted subtitle packet, and the seek target.) If the index choice (which is the default) is specified, then prerolling will be done only if this information is actually available. If this method is used, the maximum amount of data to skip can be additionally controlled by --demuxer-mkv-subtitle-preroll-secs-index (it still uses the value of the option without -index if that is higher).

See also --hr-seek-demuxer-offset option. This option can achieve a similar effect, but only if hr-seek is active. It works with any demuxer, but makes seeking much slower, as it has to decode audio and video data instead of just skipping over it.

--mkv-subtitle-preroll is a deprecated alias.

--demuxer-mkv-subtitle-preroll-secs=<value>
See --demuxer-mkv-subtitle-preroll.
--demuxer-mkv-subtitle-preroll-secs-index=<value>
See --demuxer-mkv-subtitle-preroll.
--demuxer-mkv-probe-video-duration=<yes|no|full>

When opening the file, seek to the end of it, and check what timestamp the last video packet has, and report that as file duration. This is strictly for compatibility with Haali only. In this mode, it's possible that opening will be slower (especially when playing over http), or that behavior with broken files is much worse. So don't use this option.

The yes mode merely uses the index and reads a small number of blocks from the end of the file. The full mode actually traverses the entire file and can make a reliable estimate even without an index present (such as partial files).

--demuxer-rawaudio-channels=<value>
Number of channels (or channel layout) if --demuxer=rawaudio is used (default: stereo).
--demuxer-rawaudio-format=<value>
Sample format for --demuxer=rawaudio (default: s16le). Use --demuxer-rawaudio-format=help to get a list of all formats.
--demuxer-rawaudio-rate=<value>
Sample rate for --demuxer=rawaudio (default: 44 kHz).
--demuxer-rawvideo-fps=<value>
Rate in frames per second for --demuxer=rawvideo (default: 25.0).
--demuxer-rawvideo-w=<value>, --demuxer-rawvideo-h=<value>

Image dimension in pixels for --demuxer=rawvideo.

Example

Play a raw YUV sample:

mpv sample-720x576.yuv --demuxer=rawvideo \
--demuxer-rawvideo-w=720 --demuxer-rawvideo-h=576
--demuxer-rawvideo-format=<value>
Color space (fourcc) in hex or string for --demuxer=rawvideo (default: YV12).
--demuxer-rawvideo-mp-format=<value>
Color space by internal video format for --demuxer=rawvideo. Use --demuxer-rawvideo-mp-format=help for a list of possible formats.
--demuxer-rawvideo-codec=<value>
Set the video codec instead of selecting the rawvideo codec when using --demuxer=rawvideo. This uses the same values as codec names in --vd (but it does not accept decoder names).
--demuxer-rawvideo-size=<value>
Frame size in bytes when using --demuxer=rawvideo.
--demuxer-max-packets=<packets>, --demuxer-max-bytes=<bytes>

This controls how much the demuxer is allowed to buffer ahead. The demuxer will normally try to read ahead as much as necessary, or as much is requested with --demuxer-readahead-secs. The --demuxer-max-... options can be used to restrict the maximum readahead. This limits excessive readahead in case of broken files or desynced playback. The demuxer will stop reading additional packets as soon as one of the limits is reached. (The limits still can be slightly overstepped due to technical reasons.)

Set these limits higher if you get a packet queue overflow warning, and you think normal playback would be possible with a larger packet queue.

See --list-options for defaults and value range.

--demuxer-thread=<yes|no>
Run the demuxer in a separate thread, and let it prefetch a certain amount of packets (default: yes). Having this enabled may lead to smoother playback, but on the other hand can add delays to seeking or track switching.
--demuxer-readahead-secs=<seconds>

If --demuxer-thread is enabled, this controls how much the demuxer should buffer ahead in seconds (default: 1). As long as no packet has a timestamp difference higher than the readahead amount relative to the last packet returned to the decoder, the demuxer keeps reading.

Note that the --cache-secs option will override this value if a cache is enabled, and the value is larger.

(This value tends to be fuzzy, because many file formats don't store linear timestamps.)

--prefetch-playlist=<yes|no>

Prefetch next playlist entry while playback of the current entry is ending (default: no). This merely opens the URL of the next playlist entry as soon as the current URL is fully read.

This does not work with URLs resolved by the youtube-dl wrapper, and it won't.

This does not affect HLS (.m3u8 URLs) - HLS prefetching depends on the demuxer cache settings and is on by default.

This can give subtly wrong results if per-file options are used, or if options are changed in the time window between prefetching start and next file played.

This can occasionally make wrong prefetching decisions. For example, it can't predict whether you go backwards in the playlist, and assumes you won't edit the playlist.

Highly experimental.

--force-seekable=<yes|no>
If the player thinks that the media is not seekable (e.g. playing from a pipe, or it's an http stream with a server that doesn't support range requests), seeking will be disabled. This option can forcibly enable it. For seeks within the cache, there's a good chance of success.

Input

--native-keyrepeat
Use system settings for keyrepeat delay and rate, instead of --input-ar-delay and --input-ar-rate. (Whether this applies depends on the VO backend and how it handles keyboard input. Does not apply to terminal input.)
--input-ar-delay
Delay in milliseconds before we start to autorepeat a key (0 to disable).
--input-ar-rate
Number of key presses to generate per second on autorepeat.
--input-conf=<filename>
Specify input configuration file other than the default location in the mpv configuration directory (usually ~/.config/mpv/input.conf).
--no-input-default-bindings
Disable mpv default (built-in) key bindings.
--input-cmdlist
Prints all commands that can be bound to keys.
--input-doubleclick-time=<milliseconds>
Time in milliseconds to recognize two consecutive button presses as a double-click (default: 300).
--input-keylist
Prints all keys that can be bound to commands.
--input-key-fifo-size=<2-65000>
Specify the size of the FIFO that buffers key events (default: 7). If it is too small, some events may be lost. The main disadvantage of setting it to a very large value is that if you hold down a key triggering some particularly slow command then the player may be unresponsive while it processes all the queued commands.
--input-test
Input test mode. Instead of executing commands on key presses, mpv will show the keys and the bound commands on the OSD. Has to be used with a dummy video, and the normal ways to quit the player will not work (key bindings that normally quit will be shown on OSD only, just like any other binding). See `INPUT.CONF`_.
--input-file=<filename>

Read commands from the given file. Mostly useful with a FIFO. Since mpv 0.7.0 also understands JSON commands (see `JSON IPC`_), but you can't get replies or events. Use --input-ipc-server for something bi-directional. On MS Windows, JSON commands are not available.

This can also specify a direct file descriptor with fd://N (UNIX only). In this case, JSON replies will be written if the FD is writable.

Note

When the given file is a FIFO mpv opens both ends, so you can do several echo "seek 10" > mp_pipe and the pipe will stay valid.

--input-terminal, --no-input-terminal
--no-input-terminal prevents the player from reading key events from standard input. Useful when reading data from standard input. This is automatically enabled when - is found on the command line. There are situations where you have to set it manually, e.g. if you open /dev/stdin (or the equivalent on your system), use stdin in a playlist or intend to read from stdin later on via the loadfile or loadlist input commands.
--input-ipc-server=<filename>

Enable the IPC support and create the listening socket at the given path.

On Linux and Unix, the given path is a regular filesystem path. On Windows, named pipes are used, so the path refers to the pipe namespace (\\.\pipe\<name>). If the \\.\pipe\ prefix is missing, mpv will add it automatically before creating the pipe, so --input-ipc-server=/tmp/mpv-socket and --input-ipc-server=\\.\pipe\tmp\mpv-socket are equivalent for IPC on Windows.

See `JSON IPC`_ for details.

--input-appleremote=<yes|no>
(OS X only) Enable/disable Apple Remote support. Enabled by default (except for libmpv).
--input-cursor, --no-input-cursor
Permit mpv to receive pointer events reported by the video output driver. Necessary to use the OSC, or to select the buttons in DVD menus. Support depends on the VO in use.
--input-media-keys=<yes|no>
(OS X only) Enable/disable media keys support. Enabled by default (except for libmpv).
--input-right-alt-gr, --no-input-right-alt-gr
(Cocoa and Windows only) Use the right Alt key as Alt Gr to produce special characters. If disabled, count the right Alt as an Alt modifier key. Enabled by default.
--input-vo-keyboard=<yes|no>

Disable all keyboard input on for VOs which can't participate in proper keyboard input dispatching. May not affect all VOs. Generally useful for embedding only.

On X11, a sub-window with input enabled grabs all keyboard input as long as it is 1. a child of a focused window, and 2. the mouse is inside of the sub-window. It can steal away all keyboard input from the application embedding the mpv window, and on the other hand, the mpv window will receive no input if the mouse is outside of the mpv window, even though mpv has focus. Modern toolkits work around this weird X11 behavior, but naively embedding foreign windows breaks it.

The only way to handle this reasonably is using the XEmbed protocol, which was designed to solve these problems. GTK provides GtkSocket, which supports XEmbed. Qt doesn't seem to provide anything working in newer versions.

If the embedder supports XEmbed, input should work with default settings and with this option disabled. Note that input-default-bindings is disabled by default in libmpv as well - it should be enabled if you want the mpv default key bindings.

(This option was renamed from --input-x11-keyboard.)

--input-app-events=<yes|no>
(OS X only) Enable/disable application wide keyboard events so that keyboard shortcuts can be processed without a window. Enabled by default (except for libmpv).

OSD

--osc, --no-osc
Whether to load the on-screen-controller (default: yes).
--no-osd-bar, --osd-bar

Disable display of the OSD bar. This will make some things (like seeking) use OSD text messages instead of the bar.

You can configure this on a per-command basis in input.conf using osd- prefixes, see Input command prefixes. If you want to disable the OSD completely, use --osd-level=0.

--osd-duration=<time>
Set the duration of the OSD messages in ms (default: 1000).
--osd-font=<name>

Specify font to use for OSD. The default is sans-serif.

Examples

  • --osd-font='Bitstream Vera Sans'
  • --osd-font='MS Comic Sans'
--osd-font-size=<size>

Specify the OSD font size. See --sub-font-size for details.

Default: 55.

--osd-msg1=<string>
Show this string as message on OSD with OSD level 1 (visible by default). The message will be visible by default, and as long no other message covers it, and the OSD level isn't changed (see --osd-level). Expands properties; see `Property Expansion`_.
--osd-msg2=<string>
Similar as --osd-msg1, but for OSD level 2. If this is an empty string (default), then the playback time is shown.
--osd-msg3=<string>

Similar as --osd-msg1, but for OSD level 3. If this is an empty string (default), then the playback time, duration, and some more information is shown.

This is also used for the show-progress command (by default mapped to P), or in some non-default cases when seeking.

--osd-status-msg is a legacy equivalent (but with a minor difference).

--osd-status-msg=<string>

Show a custom string during playback instead of the standard status text. This overrides the status text used for --osd-level=3, when using the show-progress command (by default mapped to P), or in some non-default cases when seeking. Expands properties. See `Property Expansion`_.

This option has been replaced with --osd-msg3. The only difference is that this option implicitly includes ${osd-sym-cc}. This option is ignored if --osd-msg3 is not empty.

--osd-playing-msg=<string>

Show a message on OSD when playback starts. The string is expanded for properties, e.g. --osd-playing-msg='file: ${filename}' will show the message file: followed by a space and the currently played filename.

See `Property Expansion`_.

--osd-bar-align-x=<-1-1>
Position of the OSD bar. -1 is far left, 0 is centered, 1 is far right. Fractional values (like 0.5) are allowed.
--osd-bar-align-y=<-1-1>
Position of the OSD bar. -1 is top, 0 is centered, 1 is bottom. Fractional values (like 0.5) are allowed.
--osd-bar-w=<1-100>
Width of the OSD bar, in percentage of the screen width (default: 75). A value of 50 means the bar is half the screen wide.
--osd-bar-h=<0.1-50>
Height of the OSD bar, in percentage of the screen height (default: 3.125).
--osd-back-color=<color>
See --osd-color. Color used for OSD text background.
--osd-blur=<0..20.0>
Gaussian blur factor. 0 means no blur applied (default).
--osd-bold=<yes|no>
Format text on bold.
--osd-italic=<yes|no>
Format text on italic.
--osd-border-color=<color>

See --osd-color. Color used for the OSD font border.

Note

ignored when --osd-back-color is specified (or more exactly: when that option is not set to completely transparent).

--osd-border-size=<size>

Size of the OSD font border in scaled pixels (see --sub-font-size for details). A value of 0 disables borders.

Default: 3.

--osd-color=<color>
Specify the color used for OSD. See --sub-color for details.
--osd-fractions
Show OSD times with fractions of seconds (in millisecond precision). Useful to see the exact timestamp of a video frame.
--osd-level=<0-3>

Specifies which mode the OSD should start in.

0:OSD completely disabled (subtitles only)
1:enabled (shows up only on user interaction)
2:enabled + current time visible by default
3:enabled + --osd-status-msg (current time and status by default)
--osd-margin-x=<size>

Left and right screen margin for the OSD in scaled pixels (see --sub-font-size for details).

This option specifies the distance of the OSD to the left, as well as at which distance from the right border long OSD text will be broken.

Default: 25.

--osd-margin-y=<size>

Top and bottom screen margin for the OSD in scaled pixels (see --sub-font-size for details).

This option specifies the vertical margins of the OSD.

Default: 22.

--osd-align-x=<left|center|right>
Control to which corner of the screen OSD should be aligned to (default: left).
--osd-align-y=<top|center|bottom>
Vertical position (default: top). Details see --osd-align-x.
--osd-scale=<factor>
OSD font size multiplier, multiplied with --osd-font-size value.
--osd-scale-by-window=<yes|no>
Whether to scale the OSD with the window size (default: yes). If this is disabled, --osd-font-size and other OSD options that use scaled pixels are always in actual pixels. The effect is that changing the window size won't change the OSD font size.
--osd-shadow-color=<color>
See --sub-color. Color used for OSD shadow.
--osd-shadow-offset=<size>

Displacement of the OSD shadow in scaled pixels (see --sub-font-size for details). A value of 0 disables shadows.

Default: 0.

--osd-spacing=<size>

Horizontal OSD/sub font spacing in scaled pixels (see --sub-font-size for details). This value is added to the normal letter spacing. Negative values are allowed.

Default: 0.

--video-osd=<yes|no>

Enabled OSD rendering on the video window (default: yes). This can be used in situations where terminal OSD is preferred. If you just want to disable all OSD rendering, use --osd-level=0.

It does not affect subtitles or overlays created by scripts (in particular, the OSC needs to be disabled with --no-osc).

This option is somewhat experimental and could be replaced by another mechanism in the future.

Screenshot

--screenshot-format=<type>

Set the image file type used for saving screenshots.

Available choices:

png:PNG
ppm:PPM
pgm:PGM
pgmyuv:PGM with YV12 pixel format
tga:TARGA
jpg:JPEG (default)
jpeg:JPEG (same as jpg, but with .jpeg file ending)
--screenshot-tag-colorspace=<yes|no>

Tag screenshots with the appropriate colorspace.

Note that not all formats are supported.

Default: no.

--screenshot-high-bit-depth=<yes|no>
If possible, write screenshots with a bit depth similar to the source video (default: yes). This is interesting in particular for PNG, as this sometimes triggers writing 16 bit PNGs with huge file sizes.
--screenshot-template=<template>

Specify the filename template used to save screenshots. The template specifies the filename without file extension, and can contain format specifiers, which will be substituted when taking a screenshot. By default, the template is mpv-shot%n, which results in filenames like mpv-shot0012.png for example.

The template can start with a relative or absolute path, in order to specify a directory location where screenshots should be saved.

If the final screenshot filename points to an already existing file, the file will not be overwritten. The screenshot will either not be saved, or if the template contains %n, saved using different, newly generated filename.

Allowed format specifiers:

%[#][0X]n
A sequence number, padded with zeros to length X (default: 04). E.g. passing the format %04n will yield 0012 on the 12th screenshot. The number is incremented every time a screenshot is taken or if the file already exists. The length X must be in the range 0-9. With the optional # sign, mpv will use the lowest available number. For example, if you take three screenshots--0001, 0002, 0003--and delete the first two, the next two screenshots will not be 0004 and 0005, but 0001 and 0002 again.
%f
Filename of the currently played video.
%F
Same as %f, but strip the file extension, including the dot.
%x
Directory path of the currently played video. If the video is not on the filesystem (but e.g. http://), this expand to an empty string.
%X{fallback}
Same as %x, but if the video file is not on the filesystem, return the fallback string inside the {...}.
%p
Current playback time, in the same format as used in the OSD. The result is a string of the form "HH:MM:SS". For example, if the video is at the time position 5 minutes and 34 seconds, %p will be replaced with "00:05:34".
%P

Similar to %p, but extended with the playback time in milliseconds. It is formatted as "HH:MM:SS.mmm", with "mmm" being the millisecond part of the playback time.

Note

This is a simple way for getting unique per-frame timestamps. (Frame numbers would be more intuitive, but are not easily implementable because container formats usually use time stamps for identifying frames.)

%wX

Specify the current playback time using the format string X. %p is like %wH:%wM:%wS, and %P is like %wH:%wM:%wS.%wT.

Valid format specifiers:
%wH
hour (padded with 0 to two digits)
%wh
hour (not padded)
%wM
minutes (00-59)
%wm
total minutes (includes hours, unlike %wM)
%wS
seconds (00-59)
%ws
total seconds (includes hours and minutes)
%wf
like %ws, but as float
%wT
milliseconds (000-999)
%tX
Specify the current local date/time using the format X. This format specifier uses the UNIX strftime() function internally, and inserts the result of passing "%X" to strftime. For example, %tm will insert the number of the current month as number. You have to use multiple %tX specifiers to build a full date/time string.
%{prop[:fallback text]}
Insert the value of the input property 'prop'. E.g. %{filename} is the same as %f. If the property does not exist or is not available, an error text is inserted, unless a fallback is specified.
%%
Replaced with the % character itself.
--screenshot-directory=<path>

Store screenshots in this directory. This path is joined with the filename generated by --screenshot-template. If the template filename is already absolute, the directory is ignored.

If the directory does not exist, it is created on the first screenshot. If it is not a directory, an error is generated when trying to write a screenshot.

This option is not set by default, and thus will write screenshots to the directory from which mpv was started. In pseudo-gui mode (see `PSEUDO GUI MODE`_), this is set to the desktop.

--screenshot-jpeg-quality=<0-100>
Set the JPEG quality level. Higher means better quality. The default is 90.
--screenshot-jpeg-source-chroma=<yes|no>
Write JPEG files with the same chroma subsampling as the video (default: yes). If disabled, the libjpeg default is used.
--screenshot-png-compression=<0-9>
Set the PNG compression level. Higher means better compression. This will affect the file size of the written screenshot file and the time it takes to write a screenshot. Too high compression might occupy enough CPU time to interrupt playback. The default is 7.
--screenshot-png-filter=<0-5>
Set the filter applied prior to PNG compression. 0 is none, 1 is "sub", 2 is "up", 3 is "average", 4 is "Paeth", and 5 is "mixed". This affects the level of compression that can be achieved. For most images, "mixed" achieves the best compression ratio, hence it is the default.

Software Scaler

--sws-scaler=<name>

Specify the software scaler algorithm to be used with --vf=scale. This also affects video output drivers which lack hardware acceleration, e.g. x11. See also --vf=scale.

To get a list of available scalers, run --sws-scaler=help.

Default: bicubic.

--sws-lgb=<0-100>
Software scaler Gaussian blur filter (luma). See --sws-scaler.
--sws-cgb=<0-100>
Software scaler Gaussian blur filter (chroma). See --sws-scaler.
--sws-ls=<-100-100>
Software scaler sharpen filter (luma). See --sws-scaler.
--sws-cs=<-100-100>
Software scaler sharpen filter (chroma). See --sws-scaler.
--sws-chs=<h>
Software scaler chroma horizontal shifting. See --sws-scaler.
--sws-cvs=<v>
Software scaler chroma vertical shifting. See --sws-scaler.

Terminal

--quiet

Make console output less verbose; in particular, prevents the status line (i.e. AV: 3.4 (00:00:03.37) / 5320.6 ...) from being displayed. Particularly useful on slow terminals or broken ones which do not properly handle carriage return (i.e. \r).

See also: --really-quiet and --msg-level.

--really-quiet
Display even less output and status messages than with --quiet.
--no-terminal, --terminal

Disable any use of the terminal and stdin/stdout/stderr. This completely silences any message output.

Unlike --really-quiet, this disables input and terminal initialization as well.

--no-msg-color
Disable colorful console output on terminals.
--msg-level=<module1=level1,module2=level2,...>

Control verbosity directly for each module. The all module changes the verbosity of all the modules not explicitly specified on the command line.

Run mpv with --msg-level=all=trace to see all messages mpv outputs. You can use the module names printed in the output (prefixed to each line in [...]) to limit the output to interesting modules.

Note

Some messages are printed before the command line is parsed and are therefore not affected by --msg-level. To control these messages, you have to use the MPV_VERBOSE environment variable; see `ENVIRONMENT VARIABLES`_ for details.

Available levels:

no:complete silence
fatal:fatal messages only
error:error messages
warn:warning messages
info:informational messages
status:status messages (default)
v:verbose messages
debug:debug messages
trace:very noisy debug messages

Example

mpv --msg-level=ao/sndio=no

Completely silences the output of ao_sndio, which uses the log prefix [ao/sndio].

mpv --msg-level=all=warn,ao/alsa=error

Only show warnings or worse, and let the ao_alsa output show errors only.

--term-osd=<auto|no|force>

Control whether OSD messages are shown on the console when no video output is available (default: auto).

auto:use terminal OSD if no video output active
no:disable terminal OSD
force:use terminal OSD even if video output active

The auto mode also enables terminal OSD if --video-osd=no was set.

--term-osd-bar, --no-term-osd-bar
Enable printing a progress bar under the status line on the terminal. (Disabled by default.)
--term-osd-bar-chars=<string>

Customize the --term-osd-bar feature. The string is expected to consist of 5 characters (start, left space, position indicator, right space, end). You can use Unicode characters, but note that double- width characters will not be treated correctly.

Default: [-+-].

--term-playing-msg=<string>

Print out a string after starting playback. The string is expanded for properties, e.g. --term-playing-msg='file: ${filename}' will print the string file: followed by a space and the currently played filename.

See `Property Expansion`_.

--term-status-msg=<string>
Print out a custom string during playback instead of the standard status line. Expands properties. See `Property Expansion`_.
--msg-module
Prepend module name to each console message.
--msg-time
Prepend timing information to each console message.

TV

--tv-...
These options tune various properties of the TV capture module. For watching TV with mpv, use tv:// or tv://<channel_number> or even tv://<channel_name> (see option tv-channels for channel_name below) as a media URL. You can also use tv:///<input_id> to start watching a video from a composite or S-Video input (see option input for details).
--tv-device=<value>
Specify TV device (default: /dev/video0).
--tv-channel=<value>
Set tuner to <value> channel.
--no-tv-audio
no sound
--tv-automute=<0-255> (v4l and v4l2 only)
If signal strength reported by device is less than this value, audio and video will be muted. In most cases automute=100 will be enough. Default is 0 (automute disabled).
--tv-driver=<value>
See --tv=driver=help for a list of compiled-in TV input drivers. available: dummy, v4l2 (default: autodetect)
--tv-input=<value>
Specify input (default: 0 (TV), see console output for available inputs).
--tv-freq=<value>
Specify the frequency to set the tuner to (e.g. 511.250). Not compatible with the channels parameter.
--tv-outfmt=<value>
Specify the output format of the tuner with a preset value supported by the V4L driver (YV12, UYVY, YUY2, I420) or an arbitrary format given as hex value.
--tv-width=<value>
output window width
--tv-height=<value>
output window height
--tv-fps=<value>
framerate at which to capture video (frames per second)
--tv-buffersize=<value>
maximum size of the capture buffer in megabytes (default: dynamical)
--tv-norm=<value>

See the console output for a list of all available norms.

See also: --tv-normid.

--tv-normid=<value> (v4l2 only)
Sets the TV norm to the given numeric ID. The TV norm depends on the capture card. See the console output for a list of available TV norms.
--tv-chanlist=<value>
available: argentina, australia, china-bcast, europe-east, europe-west, france, ireland, italy, japan-bcast, japan-cable, newzealand, russia, southafrica, us-bcast, us-cable, us-cable-hrc
--tv-channels=<chan>-<name>[=<norm>],<chan>-<name>[=<norm>],...

Set names for channels.

Note

If <chan> is an integer greater than 1000, it will be treated as frequency (in kHz) rather than channel name from frequency table. Use _ for spaces in names (or play with quoting ;-) ). The channel names will then be written using OSD, and the input commands tv_step_channel, tv_set_channel and tv_last_channel will be usable for a remote control. Not compatible with the frequency parameter.

Note

The channel number will then be the position in the 'channels' list, beginning with 1.

Examples

tv://1, tv://TV1, tv_set_channel 1, tv_set_channel TV1

--tv-[brightness|contrast|hue|saturation]=<-100-100>
Set the image equalizer on the card.
--tv-audiorate=<value>
Set input audio sample rate.
--tv-forceaudio
Capture audio even if there are no audio sources reported by v4l.
--tv-alsa
Capture from ALSA.
--tv-amode=<0-3>

Choose an audio mode:

0:mono
1:stereo
2:language 1
3:language 2
--tv-forcechan=<1-2>
By default, the count of recorded audio channels is determined automatically by querying the audio mode from the TV card. This option allows forcing stereo/mono recording regardless of the amode option and the values returned by v4l. This can be used for troubleshooting when the TV card is unable to report the current audio mode.
--tv-adevice=<value>
Set an audio device. <value> should be /dev/xxx for OSS and a hardware ID for ALSA. You must replace any ':' by a '.' in the hardware ID for ALSA.
--tv-audioid=<value>
Choose an audio output of the capture card, if it has more than one.
--tv-[volume|bass|treble|balance]=<0-100>
These options set parameters of the mixer on the video capture card. They will have no effect, if your card does not have one. For v4l2 50 maps to the default value of the control, as reported by the driver.
--tv-gain=<0-100>
Set gain control for video devices (usually webcams) to the desired value and switch off automatic control. A value of 0 enables automatic control. If this option is omitted, gain control will not be modified.
--tv-immediatemode=<bool>
A value of 0 means capture and buffer audio and video together. A value of 1 (default) means to do video capture only and let the audio go through a loopback cable from the TV card to the sound card.
--tv-mjpeg
Use hardware MJPEG compression (if the card supports it). When using this option, you do not need to specify the width and height of the output window, because mpv will determine it automatically from the decimation value (see below).
--tv-decimation=<1|2|4>

choose the size of the picture that will be compressed by hardware MJPEG compression:

1:

full size

  • 704x576 PAL
  • 704x480 NTSC
2:

medium size

  • 352x288 PAL
  • 352x240 NTSC
4:

small size

  • 176x144 PAL
  • 176x120 NTSC
--tv-quality=<0-100>
Choose the quality of the JPEG compression (< 60 recommended for full size).
--tv-scan-autostart
Begin channel scanning immediately after startup (default: disabled).
--tv-scan-period=<0.1-2.0>
Specify delay in seconds before switching to next channel (default: 0.5). Lower values will cause faster scanning, but can detect inactive TV channels as active.
--tv-scan-threshold=<1-100>
Threshold value for the signal strength (in percent), as reported by the device (default: 50). A signal strength higher than this value will indicate that the currently scanning channel is active.

Cache

--cache=<kBytes|yes|no|auto>

Set the size of the cache in kilobytes, disable it with no, or automatically enable it if needed with auto (default: auto). With auto, the cache will usually be enabled for network streams, using the size set by --cache-default. With yes, the cache will always be enabled with the size set by --cache-default (unless the stream cannot be cached, or --cache-default disables caching).

May be useful when playing files from slow media, but can also have negative effects, especially with file formats that require a lot of seeking, such as MP4.

Note that half the cache size will be used to allow fast seeking back. This is also the reason why a full cache is usually not reported as 100% full. The cache fill display does not include the part of the cache reserved for seeking back. The actual maximum percentage will usually be the ratio between readahead and backbuffer sizes.

--cache-default=<kBytes|no>
Set the size of the cache in kilobytes (default: 75000 KB). Using no will not automatically enable the cache e.g. when playing from a network stream. Note that using --cache will always override this option.
--cache-initial=<kBytes>
Playback will start when the cache has been filled up with this many kilobytes of data (default: 0).
--cache-seek-min=<kBytes>

If a seek is to be made to a position within <kBytes> of the cache size from the current position, mpv will wait for the cache to be filled to this position rather than performing a stream seek (default: 500).

This matters for small forward seeks. With slow streams (especially HTTP streams) there is a tradeoff between skipping the data between current position and seek destination, or performing an actual seek. Depending on the situation, either of these might be slower than the other method. This option allows control over this.

--cache-backbuffer=<kBytes>
Size of the cache back buffer (default: 75000 KB). This will add to the total cache size, and reserved the amount for seeking back. The reserved amount will not be used for readahead, and instead preserves already read data to enable fast seeking back.
--cache-file=<TMP|path>

Create a cache file on the filesystem.

There are two ways of using this:

  1. Passing a path (a filename). The file will always be overwritten. When the general cache is enabled, this file cache will be used to store whatever is read from the source stream.

    This will always overwrite the cache file, and you can't use an existing cache file to resume playback of a stream. (Technically, mpv wouldn't even know which blocks in the file are valid and which not.)

    The resulting file will not necessarily contain all data of the source stream. For example, if you seek, the parts that were skipped over are never read and consequently are not written to the cache. The skipped over parts are filled with zeros. This means that the cache file doesn't necessarily correspond to a full download of the source stream.

    Both of these issues could be improved if there is any user interest.

    Warning

    Causes random corruption when used with ordered chapters or with --audio-file.

  2. Passing the string TMP. This will not be interpreted as filename. Instead, an invisible temporary file is created. It depends on your C library where this file is created (usually /tmp/), and whether filename is visible (the tmpfile() function is used). On some systems, automatic deletion of the cache file might not be guaranteed.

    If you want to use a file cache, this mode is recommended, because it doesn't break ordered chapters or --audio-file. These modes open multiple cache streams, and using the same file for them obviously clashes.

See also: --cache-file-size.

--cache-file-size=<kBytes>

Maximum size of the file created with --cache-file. For read accesses above this size, the cache is simply not used.

Keep in mind that some use-cases, like playing ordered chapters with cache enabled, will actually create multiple cache files, each of which will use up to this much disk space.

(Default: 1048576, 1 GB.)

--no-cache
Turn off input stream caching. See --cache.
--cache-secs=<seconds>
How many seconds of audio/video to prefetch if the cache is active. This overrides the --demuxer-readahead-secs option if and only if the cache is enabled and the value is larger. (Default: 10.)
--cache-pause, --no-cache-pause
Whether the player should automatically pause when the cache runs low, and unpause once more data is available ("buffering").

Network

--user-agent=<string>
Use <string> as user agent for HTTP streaming.
--cookies, --no-cookies
Support cookies when making HTTP requests. Disabled by default.
--cookies-file=<filename>
Read HTTP cookies from <filename>. The file is assumed to be in Netscape format.
--http-header-fields=<field1,field2>

Set custom HTTP fields when accessing HTTP stream.

Example

mpv --http-header-fields='Field1: value1','Field2: value2' \
http://localhost:1234

Will generate HTTP request:

GET / HTTP/1.0
Host: localhost:1234
User-Agent: MPlayer
Icy-MetaData: 1
Field1: value1
Field2: value2
Connection: close
--tls-ca-file=<filename>
Certificate authority database file for use with TLS. (Silently fails with older FFmpeg or Libav versions.)
--tls-verify
Verify peer certificates when using TLS (e.g. with https://...). (Silently fails with older FFmpeg or Libav versions.)
--tls-cert-file
A file containing a certificate to use in the handshake with the peer.
--tls-key-file
A file containing the private key for the certificate.
--referrer=<string>
Specify a referrer path or URL for HTTP requests.
--network-timeout=<seconds>
Specify the network timeout in seconds. This affects at least HTTP. The special value 0 (default) uses the FFmpeg/Libav defaults. If a protocol is used which does not support timeouts, this option is silently ignored.
--rtsp-transport=<lavf|udp|tcp|http>
Select RTSP transport method (default: tcp). This selects the underlying network transport when playing rtsp://... URLs. The value lavf leaves the decision to libavformat.
--hls-bitrate=<no|min|max|<rate>>

If HLS streams are played, this option controls what streams are selected by default. The option allows the following parameters:

no:Don't do anything special. Typically, this will simply pick the first audio/video streams it can find.
min:Pick the streams with the lowest bitrate.
max:Same, but highest bitrate. (Default.)

Additionally, if the option is a number, the stream with the highest rate equal or below the option value is selected.

The bitrate as used is sent by the server, and there's no guarantee it's actually meaningful.

DVB

--dvbin-card=<1-4>
Specifies using card number 1-4 (default: 1).
--dvbin-file=<filename>
Instructs mpv to read the channels list from <filename>. The default is in the mpv configuration directory (usually ~/.config/mpv) with the filename channels.conf.{sat,ter,cbl,atsc} (based on your card type) or channels.conf as a last resort. For DVB-S/2 cards, a VDR 1.7.x format channel list is recommended as it allows tuning to DVB-S2 channels, enabling subtitles and decoding the PMT (which largely improves the demuxing). Classic mplayer format channel lists are still supported (without these improvements), and for other card types, only limited VDR format channel list support is implemented (patches welcome). For channels with dynamic PID switching or incomplete channels.conf, --dvbin-full-transponder or the magic PID 8192 are recommended.
--dvbin-timeout=<1-30>
Maximum number of seconds to wait when trying to tune a frequency before giving up (default: 30).
--dvbin-full-transponder=<yes|no>

Apply no filters on program PIDs, only tune to frequency and pass full transponder to demuxer. The player frontend selects the streams from the full TS in this case, so the program which is shown initially may not match the chosen channel. Switching between the programs is possible by cycling the program property. This is useful to record multiple programs on a single transponder, or to work around issues in the channels.conf. It is also recommended to use this for channels which switch PIDs on-the-fly, e.g. for regional news.

Default: no

ALSA audio output options

--alsa-device=<device>
Deprecated, use --audio-device (requires alsa/ prefix).
--alsa-resample=yes
Enable ALSA resampling plugin. (This is disabled by default, because some drivers report incorrect audio delay in some cases.)
--alsa-mixer-device=<device>
Set the mixer device used with ao-volume (default: default).
--alsa-mixer-name=<name>
Set the name of the mixer element (default: Master). This is for example PCM or Master.
--alsa-mixer-index=<number>
Set the index of the mixer channel (default: 0). Consider the output of "amixer scontrols", then the index is the number that follows the name of the element.
--alsa-non-interleaved
Allow output of non-interleaved formats (if the audio decoder uses this format). Currently disabled by default, because some popular ALSA plugins are utterly broken with non-interleaved formats.
--alsa-ignore-chmap
Don't read or set the channel map of the ALSA device - only request the required number of channels, and then pass the audio as-is to it. This option most likely should not be used. It can be useful for debugging, or for static setups with a specially engineered ALSA configuration (in this case you should always force the same layout with --audio-channels, or it will work only for files which use the layout implicit to your ALSA device).

OpenGL renderer options

The following video options are currently all specific to --vo=opengl and --vo=opengl-cb only, which are the only VOs that implement them.

--scale=<filter>

bilinear
Bilinear hardware texture filtering (fastest, very low quality). This is the default for compatibility reasons.
spline36
Mid quality and speed. This is the default when using opengl-hq.
lanczos

Lanczos scaling. Provides mid quality and speed. Generally worse than spline36, but it results in a slightly sharper image which is good for some content types. The number of taps can be controlled with scale-radius, but is best left unchanged.

(This filter is an alias for sinc-windowed sinc)

ewa_lanczos

Elliptic weighted average Lanczos scaling. Also known as Jinc. Relatively slow, but very good quality. The radius can be controlled with scale-radius. Increasing the radius makes the filter sharper but adds more ringing.

(This filter is an alias for jinc-windowed jinc)

ewa_lanczossharp
A slightly sharpened version of ewa_lanczos, preconfigured to use an ideal radius and parameter. If your hardware can run it, this is probably what you should use by default.
mitchell
Mitchell-Netravali. The B and C parameters can be set with --scale-param1 and --scale-param2. This filter is very good at downscaling (see --dscale).
oversample
A version of nearest neighbour that (naively) oversamples pixels, so that pixels overlapping edges get linearly interpolated instead of rounded. This essentially removes the small imperfections and judder artifacts caused by nearest-neighbour interpolation, in exchange for adding some blur. This filter is good at temporal interpolation, and also known as "smoothmotion" (see --tscale).
linear
A --tscale filter.

There are some more filters, but most are not as useful. For a complete list, pass help as value, e.g.:

mpv --scale=help
--cscale=<filter>
As --scale, but for interpolating chroma information. If the image is not subsampled, this option is ignored entirely.
--dscale=<filter>
Like --scale, but apply these filters on downscaling instead. If this option is unset, the filter implied by --scale will be applied.
--tscale=<filter>

The filter used for interpolating the temporal axis (frames). This is only used if --interpolation is enabled. The only valid choices for --tscale are separable convolution filters (use --tscale=help to get a list). The default is mitchell.

Note that the maximum supported filter radius is currently 3, due to limitations in the number of video textures that can be loaded simultaneously.

--scale-param1=<value>, --scale-param2=<value>, --cscale-param1=<value>, --cscale-param2=<value>, --dscale-param1=<value>, --dscale-param2=<value>, --tscale-param1=<value>, --tscale-param2=<value>

Set filter parameters. Ignored if the filter is not tunable. Currently, this affects the following filter parameters:

bcspline
Spline parameters (B and C). Defaults to 0.5 for both.
gaussian
Scale parameter (t). Increasing this makes the result blurrier. Defaults to 1.
oversample
Minimum distance to an edge before interpolation is used. Setting this to 0 will always interpolate edges, whereas setting it to 0.5 will never interpolate, thus behaving as if the regular nearest neighbour algorithm was used. Defaults to 0.0.
--scale-blur=<value>, --scale-wblur=<value>, --cscale-blur=<value>, --cscale-wblur=<value>, --dscale-blur=<value>, --dscale-wblur=<value>, --tscale-blur=<value>, --tscale-wblur=<value>
Kernel/window scaling factor (also known as a blur factor). Decreasing this makes the result sharper, increasing it makes it blurrier (default 0). If set to 0, the kernel's preferred blur factor is used. Note that setting this too low (eg. 0.5) leads to bad results. It's generally recommended to stick to values between 0.8 and 1.2.
--scale-clamp, --cscale-clamp, --dscale-clamp, --tscale-clamp
Clamp the filter kernel's value range to [0-1]. This is especially useful for --tscale, where it reduces excessive ringing artifacts in the temporal domain (which typically manifest themselves as short flashes or fringes of black, mostly around moving edges) in exchange for potentially adding more blur.
--scale-taper=<value>, --scale-wtaper=<value>, --dscale-taper=<value>, --dscale-wtaper=<value>, --cscale-taper=<value>, --cscale-wtaper=<value>, --tscale-taper=<value>, --tscale-wtaper=<value>
Kernel/window taper factor. Increasing this flattens the filter function. Value range is 0 to 1. A value of 0 (the default) means no flattening, a value of 1 makes the filter completely flat (equivalent to a box function). Values in between mean that some portion will be flat and the actual filter function will be squeezed into the space in between.
--scale-radius=<value>, --cscale-radius=<value>, --dscale-radius=<value>, --tscale-radius=<value>

Set radius for tunable filters, must be a float number between 0.5 and 16.0. Defaults to the filter's preferred radius if not specified. Doesn't work for every scaler and VO combination.

Note that depending on filter implementation details and video scaling ratio, the radius that actually being used might be different (most likely being increased a bit).

--scale-antiring=<value>, --cscale-antiring=<value>, --dscale-antiring=<value>, --tscale-antiring=<value>

Set the antiringing strength. This tries to eliminate ringing, but can introduce other artifacts in the process. Must be a float number between 0.0 and 1.0. The default value of 0.0 disables antiringing entirely.

Note that this doesn't affect the special filters bilinear and bicubic_fast.

--scale-window=<window>, --cscale-window=<window>, --dscale-window=<window>, --tscale-window=<window>
(Advanced users only) Choose a custom windowing function for the kernel. Defaults to the filter's preferred window if unset. Use --scale-window=help to get a list of supported windowing functions.
--scale-wparam=<window>, --cscale-wparam=<window>, --cscale-wparam=<window>, --tscale-wparam=<window>

(Advanced users only) Configure the parameter for the window function given by --scale-window etc. Ignored if the window is not tunable. Currently, this affects the following window parameters:

kaiser
Window parameter (alpha). Defaults to 6.33.
blackman
Window parameter (alpha). Defaults to 0.16.
gaussian
Scale parameter (t). Increasing this makes the window wider. Defaults to 1.
--scaler-lut-size=<4..10>

Set the size of the lookup texture for scaler kernels (default: 6). The actual size of the texture is 2^N for an option value of N. So the lookup texture with the default setting uses 64 samples.

All weights are linearly interpolated from those samples, so increasing the size of lookup table might improve the accuracy of scaler.

--scaler-resizes-only
Disable the scaler if the video image is not resized. In that case, bilinear is used instead of whatever is set with --scale. Bilinear will reproduce the source image perfectly if no scaling is performed. Enabled by default. Note that this option never affects --cscale.
--linear-scaling
Scale in linear light. It should only be used with a --opengl-fbo-format that has at least 16 bit precision.
--correct-downscaling

When using convolution based filters, extend the filter size when downscaling. Increases quality, but reduces performance while downscaling.

This will perform slightly sub-optimally for anamorphic video (but still better than without it) since it will extend the size to match only the milder of the scale factors between the axes.

--interpolation

Reduce stuttering caused by mismatches in the video fps and display refresh rate (also known as judder).

Warning

This requires setting the --video-sync option to one of the display- modes, or it will be silently disabled. This was not required before mpv 0.14.0.

This essentially attempts to interpolate the missing frames by convoluting the video along the temporal axis. The filter used can be controlled using the --tscale setting.

Note that this relies on vsync to work, see --opengl-swapinterval for more information.

--interpolation-threshold=<0..1,-1>

Threshold below which frame ratio interpolation gets disabled (default: 0.0001). This is calculated as abs(disphz/vfps - 1) < threshold, where vfps is the speed-adjusted video FPS, and disphz the display refresh rate. (The speed-adjusted video FPS is roughly equal to the normal video FPS, but with slowdown and speedup applied. This matters if you use --video-sync=display-resample to make video run synchronously to the display FPS, or if you change the speed property.)

The default is intended to almost always enable interpolation if the playback rate is even slightly different from the display refresh rate. But note that if you use e.g. --video-sync=display-vdrop, small deviations in the rate can disable interpolation and introduce a discontinuity every other minute.

Set this to -1 to disable this logic.

--opengl-pbo

Enable use of PBOs. On some drivers this can be faster, especially if the source video size is huge (e.g. so called "4K" video). On other drivers it might be slower or cause latency issues.

In theory, this can sometimes lead to sporadic and temporary image corruption (because reupload is not retried when it fails).

--dither-depth=<N|no|auto>

Set dither target depth to N. Default: no.

no
Disable any dithering done by mpv.
auto
Automatic selection. If output bit depth cannot be detected, 8 bits per component are assumed.
8
Dither to 8 bit output.

Note that the depth of the connected video display device cannot be detected. Often, LCD panels will do dithering on their own, which conflicts with this option and leads to ugly output.

--dither-size-fruit=<2-8>

Set the size of the dither matrix (default: 6). The actual size of the matrix is (2^N) x (2^N) for an option value of N, so a value of 6 gives a size of 64x64. The matrix is generated at startup time, and a large matrix can take rather long to compute (seconds).

Used in --dither=fruit mode only.

--dither=<fruit|ordered|no>
Select dithering algorithm (default: fruit). (Normally, the --dither-depth option controls whether dithering is enabled.)
--temporal-dither
Enable temporal dithering. (Only active if dithering is enabled in general.) This changes between 8 different dithering patterns on each frame by changing the orientation of the tiled dithering matrix. Unfortunately, this can lead to flicker on LCD displays, since these have a high reaction time.
--temporal-dither-period=<1-128>
Determines how often the dithering pattern is updated when --temporal-dither is in use. 1 (the default) will update on every video frame, 2 on every other frame, etc.
--opengl-debug
Check for OpenGL errors, i.e. call glGetError(). Also, request a debug OpenGL context (which does nothing with current graphics drivers as of this writing).
--opengl-swapinterval=<n>

Interval in displayed frames between two buffer swaps. 1 is equivalent to enable VSYNC, 0 to disable VSYNC. Defaults to 1 if not specified.

Note that this depends on proper OpenGL vsync support. On some platforms and drivers, this only works reliably when in fullscreen mode. It may also require driver-specific hacks if using multiple monitors, to ensure mpv syncs to the right one. Compositing window managers can also lead to bad results, as can missing or incorrect display FPS information (see --display-fps).

--opengl-shaders=<files>

Custom GLSL hooks. These are a flexible way to add custom fragment shaders, which can be injected at almost arbitrary points in the rendering pipeline, and access all previous intermediate textures.

Warning

The syntax is not stable yet and may change any time.

The general syntax of a user shader looks like this:

//!METADATA ARGS...
//!METADATA ARGS...

vec4 hook() {
   ...
   return something;
}

//!METADATA ARGS...
//!METADATA ARGS...

...

Each block of metadata, along with the non-metadata lines after it, defines a single pass. Each pass can set the following metadata:

HOOK <name> (required)
The texture which to hook into. May occur multiple times within a metadata block, up to a predetermined limit. See below for a list of hookable textures.
BIND <name>
Loads a texture and makes it available to the pass, and sets up macros to enable accessing it. See below for a list of set macros. By default, no textures are bound. The special name HOOKED can be used to refer to the texture that triggered this pass.
SAVE <name>
Gives the name of the texture to save the result of this pass into. By default, this is set to the special name HOOKED which has the effect of overwriting the hooked texture.
WIDTH <szexpr>, HEIGHT <szexpr>
Specifies the size of the resulting texture for this pass. szexpr refers to an expression in RPN (reverse polish notation), using the operators + - * / > < !, floating point literals, and references to sizes of existing texture and OUTPUT (such as MAIN.width or CHROMA.height). By default, these are set to HOOKED.w and HOOKED.h, respectively.
WHEN <szexpr>
Specifies a condition that needs to be true (non-zero) for the shader stage to be evaluated. If it fails, it will silently be omitted. (Note that a shader stage like this which has a dependency on an optional hook point can still cause that hook point to be saved, which has some minor overhead)
OFFSET ox oy
Indicates a pixel shift (offset) introduced by this pass. These pixel offsets will be accumulated and corrected during the next scaling pass (cscale or scale). The default values are 0 0 which correspond to no shift. Note that offsets are ignored when not overwriting the hooked texture.
COMPONENTS n
Specifies how many components of this pass's output are relevant and should be stored in the texture, up to 4 (rgba). By default, this value is equal to the number of components in HOOKED.

Each bound texture (via BIND) will make available the following definitions to that shader pass, where NAME is the name of the bound texture:

vec4 NAME_tex(vec2 pos)
The sampling function to use to access the texture at a certain spot (in texture coordinate space, range [0,1]). This takes care of any necessary normalization conversions.
vec4 NAME_texOff(vec2 offset)
Sample the texture at a certain offset in pixels. This works like NAME_tex but additionally takes care of necessary rotations, so that sampling at e.g. vec2(-1,0) is always one pixel to the left.
vec2 NAME_pos
The local texture coordinate of that texture, range [0,1].
vec2 NAME_size
The (rotated) size in pixels of the texture.
mat2 NAME_rot
The rotation matrix associated with this texture. (Rotates pixel space to texture coordinates)
vec2 NAME_pt
The (unrotated) size of a single pixel, range [0,1].
sampler NAME_raw
The raw bound texture itself. The use of this should be avoided unless absolutely necessary.

In addition to these parameters, the following uniforms are also globally available:

float random
A random number in the range [0-1], different per frame.
int frame
A simple count of frames rendered, increases by one per frame and never resets (regardless of seeks).
vec2 image_size
The size in pixels of the input image.
vec2 target_size
The size in pixels of the visible part of the scaled (and possibly cropped) image.

Internally, vo_opengl may generate any number of the following textures. Whenever a texture is rendered and saved by vo_opengl, all of the passes that have hooked into it will run, in the order they were added by the user. This is a list of the legal hook points:

RGB, LUMA, CHROMA, ALPHA, XYZ (resizable)
Source planes (raw). Which of these fire depends on the image format of the source.
CHROMA_SCALED, ALPHA_SCALED (fixed)
Source planes (upscaled). These only fire on subsampled content.
NATIVE (resizable)
The combined image, in the source colorspace, before conversion to RGB.
MAINPRESUB (resizable)
The image, after conversion to RGB, but before --blend-subtitles=video is applied.
MAIN (resizable)
The main image, after conversion to RGB but before upscaling.
LINEAR (fixed)
Linear light image, before scaling. This only fires when --linear-scaling is in effect.
SIGMOID (fixed)
Sigmoidized light, before scaling. This only fires when --sigmoid-upscaling is in effect.
PREKERNEL (fixed)
The image immediately before the scaler kernel runs.
POSTKERNEL (fixed)
The image immediately after the scaler kernel runs.
SCALED (fixed)
The final upscaled image, before color management.
OUTPUT (fixed)
The final output image, after color management but before dithering and drawing to screen.

Only the textures labelled with resizable may be transformed by the pass. When overwriting a texture marked fixed, the WIDTH, HEIGHT and OFFSET must be left at their default values.

--deband
Enable the debanding algorithm. This greatly reduces the amount of visible banding, blocking and other quantization artifacts, at the expensive of very slightly blurring some of the finest details. In practice, it's virtually always an improvement - the only reason to disable it would be for performance.
--deband-iterations=<1..16>
The number of debanding steps to perform per sample. Each step reduces a bit more banding, but takes time to compute. Note that the strength of each step falls off very quickly, so high numbers (>4) are practically useless. (Default 1)
--deband-threshold=<0..4096>
The debanding filter's cut-off threshold. Higher numbers increase the debanding strength dramatically but progressively diminish image details. (Default 64)
--deband-range=<1..64>

The debanding filter's initial radius. The radius increases linearly for each iteration. A higher radius will find more gradients, but a lower radius will smooth more aggressively. (Default 16)

If you increase the --deband-iterations, you should probably decrease this to compensate.

--deband-grain=<0..4096>
Add some extra noise to the image. This significantly helps cover up remaining quantization artifacts. Higher numbers add more noise. (Default 48)
--sigmoid-upscaling
When upscaling, use a sigmoidal color transform to avoid emphasizing ringing artifacts. This also implies --linear-scaling.
--sigmoid-center
The center of the sigmoid curve used for --sigmoid-upscaling, must be a float between 0.0 and 1.0. Defaults to 0.75 if not specified.
--sigmoid-slope
The slope of the sigmoid curve used for --sigmoid-upscaling, must be a float between 1.0 and 20.0. Defaults to 6.5 if not specified.
--sharpen=<value>
If set to a value other than 0, enable an unsharp masking filter. Positive values will sharpen the image (but add more ringing and aliasing). Negative values will blur the image. If your GPU is powerful enough, consider alternatives like the ewa_lanczossharp scale filter, or the --scale-blur option.
--opengl-glfinish
Call glFinish() before and after swapping buffers (default: disabled). Slower, but might improve results when doing framedropping. Can completely ruin performance. The details depend entirely on the OpenGL driver.
--opengl-waitvsync

Call glXWaitVideoSyncSGI after each buffer swap (default: disabled). This may or may not help with video timing accuracy and frame drop. It's possible that this makes video output slower, or has no effect at all.

X11/GLX only.

--opengl-vsync-fences=<N>
Synchronize the CPU to the Nth past frame using the GL_ARB_sync extension. A value of 0 disables this behavior (default). A value of 1 means it will synchronize to the current frame after rendering it. Like --glfinish and --waitvsync, this can lower or ruin performance. Its advantage is that it can span multiple frames, and effectively limit the number of frames the GPU queues ahead (which also has an influence on vsync).
--opengl-dwmflush=<no|windowed|yes|auto>

Calls DwmFlush after swapping buffers on Windows (default: auto). It also sets SwapInterval(0) to ignore the OpenGL timing. Values are: no (disabled), windowed (only in windowed mode), yes (also in full screen).

The value auto will try to determine whether the compositor is active, and calls DwmFlush only if it seems to be.

This may help to get more consistent frame intervals, especially with high-fps clips - which might also reduce dropped frames. Typically, a value of windowed should be enough, since full screen may bypass the DWM.

Windows only.

--opengl-dcomposition=<yes|no>

Allows DirectComposition when using the ANGLE backend (default: yes). DirectComposition implies flip-model presentation, which can improve rendering efficiency on Windows 8+ by avoiding a copy of the video frame. mpv uses it by default where possible, but it can cause poor behaviour with some drivers, such as a black screen or graphical corruption when leaving full-screen mode. Use "no" to disable it.

Windows with ANGLE only.

--opengl-sw
Continue even if a software renderer is detected.
--opengl-backend=<sys>

The value auto (the default) selects the windowing backend. You can also pass help to get a complete list of compiled in backends (sorted by autoprobe order).

auto
auto-select (default)
cocoa
Cocoa/OS X
win
Win32/WGL
angle
Direct3D11 through the OpenGL ES translation layer ANGLE. This supports almost everything the win backend does (if the ANGLE build is new enough).
dxinterop (experimental)
Win32, using WGL for rendering and Direct3D 9Ex for presentation. Works on Nvidia and AMD. Newer Intel chips with the latest drivers may also work.
x11
X11/GLX
x11probe
For internal autoprobing, equivalent to x11 otherwise. Don't use directly, it could be removed without warning as autoprobing is changed.
wayland
Wayland/EGL
drm
DRM/EGL (drm-egl is a deprecated alias)
x11egl
X11/EGL
mali-fbdev
Direct fbdev/EGL support on some ARM/MALI devices.
--opengl-es=<mode>

Select whether to use GLES:

yes
Try to prefer ES over Desktop GL
no
Try to prefer desktop GL over ES
auto
Use the default for each backend (default)
--opengl-fbo-format=<fmt>
Selects the internal format of textures used for FBOs. The format can influence performance and quality of the video output. fmt can be one of: rgb8, rgb10, rgb10_a2, rgb16, rgb16f, rgb32f, rgba12, rgba16, rgba16f, rgba32f. Default: auto, which maps to rgba16 on desktop GL, and rgba16f or rgb10_a2 on GLES (e.g. ANGLE), unless GL_EXT_texture_norm16 is available.
--opengl-gamma=<0.1..2.0>

Set a gamma value (default: 1.0). If gamma is adjusted in other ways (like with the --gamma option or key bindings and the gamma property), the value is multiplied with the other gamma value.

Recommended values based on the environmental brightness:

1.0
Brightly illuminated (default)
0.9
Slightly dim
0.8
Pitch black room

NOTE: Typical movie content (Blu-ray etc.) already contains a gamma drop of about 0.8, so specifying it here as well will result in even darker image than intended!

--gamma-auto

Automatically corrects the gamma value depending on ambient lighting conditions (adding a gamma boost for dark rooms).

With ambient illuminance of 64lux, mpv will pick the 1.0 gamma value (no boost), and slightly increase the boost up until 0.8 for 16lux.

NOTE: Only implemented on OS X.

--target-prim=<value>

Specifies the primaries of the display. Video colors will be adapted to this colorspace when ICC color management is not being used. Valid values are:

auto
Disable any adaptation (default)
bt.470m
ITU-R BT.470 M
bt.601-525
ITU-R BT.601 (525-line SD systems, eg. NTSC), SMPTE 170M/240M
bt.601-625
ITU-R BT.601 (625-line SD systems, eg. PAL/SECAM), ITU-R BT.470 B/G
bt.709
ITU-R BT.709 (HD), IEC 61966-2-4 (sRGB), SMPTE RP177 Annex B
bt.2020
ITU-R BT.2020 (UHD)
apple
Apple RGB
adobe
Adobe RGB (1998)
prophoto
ProPhoto RGB (ROMM)
cie1931
CIE 1931 RGB (not to be confused with CIE XYZ)
dci-p3
DCI-P3 (Digital Cinema Colorspace), SMPTE RP431-2
v-gamut
Panasonic V-Gamut (VARICAM) primaries
--target-trc=<value>

Specifies the transfer characteristics (gamma) of the display. Video colors will be adjusted to this curve when ICC color management is not being used. Valid values are:

auto
Disable any adaptation (default)
bt.1886
ITU-R BT.1886 curve (assuming infinite contrast)
srgb
IEC 61966-2-4 (sRGB)
linear
Linear light output
gamma1.8
Pure power curve (gamma 1.8), also used for Apple RGB
gamma2.2
Pure power curve (gamma 2.2)
gamma2.8
Pure power curve (gamma 2.8), also used for BT.470-BG
prophoto
ProPhoto RGB (ROMM)
st2084
SMPTE ST2084 (HDR) curve, PQ OETF
std-b67
ARIB STD-B67 (Hybrid Log-gamma) curve, also known as BBC/NHK HDR
v-log
Panasonic V-Log (VARICAM) curve

Note

When using HDR output formats, mpv will encode to the specified curve but it will not set any HDMI flags or other signalling that might be required for the target device to correctly display the HDR signal. The user should independently guarantee this before using these signal formats for display.

--target-brightness=<1..100000>
Specifies the display's approximate brightness in cd/m^2. When playing HDR content on a SDR display (or SDR content on an HDR display), video colors will be tone mapped to this target brightness using the algorithm specified by --hdr-tone-mapping. The default of 250 cd/m^2 corresponds to a typical consumer display.
--hdr-tone-mapping=<value>

Specifies the algorithm used for tone-mapping HDR images onto the target display. Valid values are:

clip
Hard-clip any out-of-range values.
reinhard
Reinhard tone mapping algorithm. Very simple continuous curve. Preserves dynamic range and peak but uses nonlinear contrast.
hable
Similar to reinhard but preserves dark contrast better (slightly sigmoidal). Developed by John Hable for use in video games. (default)
gamma
Fits a logarithmic transfer between the tone curves.
linear
Linearly stretches the entire reference gamut to (a linear multiple of) the display.
--tone-mapping-param=<value>

Set tone mapping parameters. Ignored if the tone mapping algorithm is not tunable. This affects the following tone mapping algorithms:

reinhard
Specifies the local contrast coefficient at the display peak. Defaults to 0.5, which means that in-gamut values will be about half as bright as when clipping.
gamma
Specifies the exponent of the function. Defaults to 1.8.
linear
Specifies the scale factor to use while stretching. Defaults to 1.0.
--icc-profile=<file>
Load an ICC profile and use it to transform video RGB to screen output. Needs LittleCMS 2 support compiled in. This option overrides the --target-prim, --target-trc and --icc-profile-auto options.
--icc-profile-auto

Automatically select the ICC display profile currently specified by the display settings of the operating system.

NOTE: On Windows, the default profile must be an ICC profile. WCS profiles are not supported.

--icc-cache-dir=<dirname>

Store and load the 3D LUTs created from the ICC profile in this directory. This can be used to speed up loading, since LittleCMS 2 can take a while to create a 3D LUT. Note that these files contain uncompressed LUTs. Their size depends on the --icc-3dlut-size, and can be very big.

NOTE: This is not cleaned automatically, so old, unused cache files may stick around indefinitely.

--icc-intent=<value>

Specifies the ICC intent used for the color transformation (when using --icc-profile).

0
perceptual
1
relative colorimetric (default)
2
saturation
3
absolute colorimetric
--icc-3dlut-size=<r>x<g>x<b>
Size of the 3D LUT generated from the ICC profile in each dimension. Default is 64x64x64. Sizes may range from 2 to 512.
--icc-contrast=<0-100000>
Specifies an upper limit on the target device's contrast ratio. This is detected automatically from the profile if possible, but for some profiles it might be missing, causing the contrast to be assumed as infinite. As a result, video may appear darker than intended. This only affects BT.1886 content. The default of 0 means no limit.
--blend-subtitles=<yes|video|no>

Blend subtitles directly onto upscaled video frames, before interpolation and/or color management (default: no). Enabling this causes subtitles to be affected by --icc-profile, --target-prim, --target-trc, --interpolation, --opengl-gamma and --post-shader. It also increases subtitle performance when using --interpolation.

The downside of enabling this is that it restricts subtitles to the visible portion of the video, so you can't have subtitles exist in the black margins below a video (for example).

If video is selected, the behavior is similar to yes, but subs are drawn at the video's native resolution, and scaled along with the video.

Warning

This changes the way subtitle colors are handled. Normally, subtitle colors are assumed to be in sRGB and color managed as such. Enabling this makes them treated as being in the video's color space instead. This is good if you want things like softsubbed ASS signs to match the video colors, but may cause SRT subtitles or similar to look slightly off.

--alpha=<blend-tiles|blend|yes|no>

Decides what to do if the input has an alpha component.

blend-tiles
Blend the frame against a 16x16 gray/white tiles background (default).
blend
Blend the frame against the background color (--background, normally black).
yes
Try to create a framebuffer with alpha component. This only makes sense if the video contains alpha information (which is extremely rare). May not be supported on all platforms. If alpha framebuffers are unavailable, it silently falls back on a normal framebuffer. Note that if you set the --opengl-fbo-format option to a non-default value, a format with alpha must be specified, or this won't work. This does not work on X11 with EGL and Mesa (freedesktop bug 67676).
no
Ignore alpha component.
--opengl-rectangle-textures
Force use of rectangle textures (default: no). Normally this shouldn't have any advantages over normal textures. Note that hardware decoding overrides this flag. Could be removed any time.
--background=<color>
Color used to draw parts of the mpv window not covered by video. See --osd-color option how colors are defined.
--opengl-tex-pad-x, --opengl-tex-pad-y
Enlarge the video source textures by this many pixels. For debugging only (normally textures are sized exactly, but due to hardware decoding interop we may have to deal with additional padding, which can be tested with these options). Could be removed any time.
--opengl-early-flush=<yes|no|auto>
Call glFlush() after rendering a frame and before attempting to display it (default: auto). Can fix stuttering in some cases, in other cases probably causes it. The auto mode will call glFlush() only if the renderer is going to wait for a while after rendering, instead of flipping GL front and backbuffers immediately (i.e. it doesn't call it in display-sync mode).
--opengl-dumb-mode=<yes|no>

This mode is extremely restricted, and will disable most extended OpenGL features. This includes high quality scalers and custom shaders!

It is intended for hardware that does not support FBOs (including GLES, which supports it insufficiently), or to get some more performance out of bad or old hardware.

This mode is forced automatically if needed, and this option is mostly useful for debugging. It's also enabled automatically if nothing uses features which require FBOs.

This option might be silently removed in the future.

Miscellaneous

--display-tags=tag1,tags2,...

Set the list of tags that should be displayed on the terminal. Tags that are in the list, but are not present in the played file, will not be shown. If a value ends with *, all tags are matched by prefix (though there is no general globbing). Just passing * essentially filtering.

The default includes a common list of tags, call mpv with --list-options to see it.

--mc=<seconds/frame>
Maximum A-V sync correction per frame (in seconds)
--autosync=<factor>
Gradually adjusts the A/V sync based on audio delay measurements. Specifying --autosync=0, the default, will cause frame timing to be based entirely on audio delay measurements. Specifying --autosync=1 will do the same, but will subtly change the A/V correction algorithm. An uneven video framerate in a video which plays fine with --no-audio can often be helped by setting this to an integer value greater than 1. The higher the value, the closer the timing will be to --no-audio. Try --autosync=30 to smooth out problems with sound drivers which do not implement a perfect audio delay measurement. With this value, if large A/V sync offsets occur, they will only take about 1 or 2 seconds to settle out. This delay in reaction time to sudden A/V offsets should be the only side effect of turning this option on, for all sound drivers.
--video-sync=<audio|...>

How the player synchronizes audio and video.

The modes starting with display- try to output video frames completely synchronously to the display, using the detected display vertical refresh rate as a hint how fast frames will be displayed on average. These modes change video speed slightly to match the display. See --video-sync-... options for fine tuning. The robustness of this mode is further reduced by making a some idealized assumptions, which may not always apply in reality. Behavior can depend on the VO and the system's video and audio drivers. Media files must use constant framerate. Section-wise VFR might work as well with some container formats (but not e.g. mkv). If the sync code detects severe A/V desync, or the framerate cannot be detected, the player automatically reverts to audio mode for some time or permanently.

The modes with desync in their names do not attempt to keep audio/video in sync. They will slowly (or quickly) desync, until e.g. the next seek happens. These modes are meant for testing, not serious use.

audio:Time video frames to audio. This is the most robust mode, because the player doesn't have to assume anything about how the display behaves. The disadvantage is that it can lead to occasional frame drops or repeats. If audio is disabled, this uses the system clock. This is the default mode.
display-resample:Resample audio to match the video. This mode will also try to adjust audio speed to compensate for other drift. (This means it will play the audio at a different speed every once in a while to reduce the A/V difference.)
display-resample-vdrop:Resample audio to match the video. Drop video frames to compensate for drift.
display-resample-desync:Like the previous mode, but no A/V compensation.
display-vdrop:Drop or repeat video frames to compensate desyncing video. (Although it should have the same effects as audio, the implementation is very different.)
display-adrop:Drop or repeat audio data to compensate desyncing video. See --video-sync-adrop-size. This mode will cause severe audio artifacts if the real monitor refresh rate is too different from the reported or forced rate.
display-desync:Sync video to display, and let audio play on its own.
desync:Sync video according to system clock, and let audio play on its own.
--video-sync-max-video-change=<value>

Maximum speed difference in percent that is applied to video with --video-sync=display-... (default: 1). Display sync mode will be disabled if the monitor and video refresh way do not match within the given range. It tries multiples as well: playing 30 fps video on a 60 Hz screen will duplicate every second frame. Playing 24 fps video on a 60 Hz screen will play video in a 2-3-2-3-... pattern.

The default settings are not loose enough to speed up 23.976 fps video to 25 fps. We consider the pitch change too extreme to allow this behavior by default. Set this option to a value of 5 to enable it.

Note that in the --video-sync=display-resample mode, audio speed will additionally be changed by a small amount if necessary for A/V sync. See --video-sync-max-audio-change.

--video-sync-max-audio-change=<value>
Maximum additional speed difference in percent that is applied to audio with --video-sync=display-... (default: 0.125). Normally, the player plays the audio at the speed of the video. But if the difference between audio and video position is too high, e.g. due to drift or other timing errors, it will attempt to speed up or slow down audio by this additional factor. Too low values could lead to video frame dropping or repeating if the A/V desync cannot be compensated, too high values could lead to chaotic frame dropping due to the audio "overshooting" and skipping multiple video frames before the sync logic can react.
--video-sync-adrop-size=<value>
For the --video-sync=display-adrop mode. This mode duplicates/drops audio data to keep audio in sync with video. To avoid audio artifacts on jitter (which would add/remove samples all the time), this is done in relatively large, fixed units, controlled by this option. The unit is seconds.
--mf-fps=<value>
Framerate used when decoding from multiple PNG or JPEG files with mf:// (default: 1).
--mf-type=<value>
Input file type for mf:// (available: jpeg, png, tga, sgi). By default, this is guessed from the file extension.
--stream-dump=<destination-filename>
Instead of playing a file, read its byte stream and write it to the given destination file. The destination is overwritten. Can be useful to test network-related behavior.
--stream-lavf-o=opt1=value1,opt2=value2,...
Set AVOptions on streams opened with libavformat. Unknown or misspelled options are silently ignored. (They are mentioned in the terminal output in verbose mode, i.e. --v. In general we can't print errors, because other options such as e.g. user agent are not available with all protocols, and printing errors for unknown options would end up being too noisy.)
--vo-mmcss-profile=<name>
(Windows only.) Set the MMCSS profile for the video renderer thread (default: Playback).
--priority=<prio>

(Windows only.) Set process priority for mpv according to the predefined priorities available under Windows.

Possible values of <prio>: idle|belownormal|normal|abovenormal|high|realtime

Warning

Using realtime priority can cause system lockup.

--force-media-title=<string>
Force the contents of the media-title property to this value. Useful for scripts which want to set a title, without overriding the user's setting in --title.
--external-file=<filename>
Add all tracks from the given file. Unlike --sub-file and --audio-file, this includes all tracks, and does not cause default stream selection over the "proper" file.
--autoload-files=<yes|no>

Automatically load/select external files (default: yes).

If set to no, then do not automatically load external files as specified by --sub-auto and --audio-file-auto. If external files are forcibly added (like with --sub-file), they will not be auto-selected.

This does not affect playlist expansion, redirection, or other loading of referenced files like with ordered chapters.

--lavfi-complex=<string>

Set a "complex" libavfilter filter, which means a single filter graph can take input from multiple source audio and video tracks. The graph can result in a single audio or video output (or both).

Currently, the filter graph labels are used to select the participating input tracks and audio/video output. The following rules apply:

  • A label of the form aidN selects audio track N as input (e.g. aid1).
  • A label of the form vidN selects video track N as input.
  • A label named ao will be connected to the audio output.
  • A label named vo will be connected to the video output.

Each label can be used only once. If you want to use e.g. an audio stream for multiple filters, you need to use the asplit filter. Multiple video or audio outputs are not possible, but you can use filters to merge them into one.

The complex filter cannot be changed yet during playback. It's also not possible to change the tracks connected to the filter at runtime. Other tracks, as long as they're not connected to the filter, and the corresponding output is not connected to the filter, can still be freely changed.

Note that the normal filter chains (--af, --vf) are applied between the complex graphs (e.g. ao label) and the actual output.

Examples

  • --lavfi-complex='[aid1] asplit [ao] [t] ; [t] aphasemeter [vo]' Play audio track 1, and visualize it as video using the aphasemeter filter.
  • --lavfi-complex='[aid1] [aid2] amix [ao]' Play audio track 1 and 2 at the same time.
  • --lavfi-complex='[vid1] [vid2] vstack [vo]' Stack video track 1 and 2 and play them at the same time. Note that both tracks need to have the same width, or filter initialization will fail (you can add scale filters before the vstack filter to fix the size).
  • --lavfi-complex='[aid1] asplit [ao] [t] ; [t] aphasemeter [t2] ; [vid1] [t2] overlay [vo]' Play audio track 1, and overlay its visualization over video track 1.
  • --lavfi-complex='[aid1] asplit [t1] [ao] ; [t1] showvolume [t2] ; [vid1] [t2] overlay [vo]' Play audio track 1, and overlay the measured volume for each speaker over video track 1.
  • null:// --lavfi-complex='life [vo]' Conways' Life Game.

See the FFmpeg libavfilter documentation for details on the available filters.