osc.rst

ON SCREEN CONTROLLER

The On Screen Controller (short: OSC) is a minimal GUI integrated with mpv to offer basic mouse-controllability. It is intended to make interaction easier for new users and to enable precise and direct seeking.

The OSC is enabled by default if mpv was compiled with Lua support. It can be disabled entirely using the --osc=no option.

Using the OSC

By default, the OSC will show up whenever the mouse is moved inside the player window and will hide if the mouse is not moved outside the OSC for 0.5 seconds or if the mouse leaves the window.

The Interface

+---------+----------+------------------------------------------+----------+
| pl prev | pl next  |  title                                   |    cache |
+------+--+---+------+---------+-----------+------+-------+-----+-----+----+
| play | skip | skip | time    |  seekbar  | time | audio | sub | vol | fs |
|      | back | frwd | elapsed |           | left |       |     |     |    |
+------+------+------+---------+-----------+------+-------+-----+-----+----+

pl prev

left-click	play previous file in playlist
right-click	show playlist
shift+L-click	show playlist

pl next

left-click	play next file in playlist
right-click	show playlist
shift+L-click	show playlist

title

Displays current media-title, filename, or custom title

left-click	show playlist position and length and full title
right-click	show filename

cache

Shows current cache fill status

play

left-click

toggle play/pause

skip back

left-click	go to beginning of chapter / previous chapter
right-click	show chapters
shift+L-click	show chapters

skip frwd

left-click	go to next chapter
right-click	show chapters
shift+L-click	show chapters

time elapsed

Shows current playback position timestamp

left-click

toggle displaying timecodes with milliseconds

seekbar

Indicates current playback position and position of chapters

left-click

seek to position

time left

Shows remaining playback time timestamp

left-click

toggle between total and remaining time

audio and sub

Displays selected track and amount of available tracks

left-click	cycle audio/sub tracks forward
right-click	cycle audio/sub tracks backwards
shift+L-click	show available audio/sub tracks

vol

left-click	toggle mute
mouse wheel	volume up/down

fs

left-click

toggle fullscreen

Key Bindings

These key bindings are active by default if nothing else is already bound to these keys. In case of collision, the function needs to be bound to a different key. See the Script Commands section.

del	Cycles visibility between never / auto (mouse-move) / always

Configuration

The OSC offers limited configuration through a config file lua-settings/osc.conf placed in mpv's user dir and through the --script-opts command-line option. Options provided through the command-line will override those from the config file.

Config Syntax

The config file must exactly follow the following syntax:

# this is a comment
optionA=value1
optionB=value2

# can only be used at the beginning of a line and there may be no spaces around the = or anywhere else.

Command-line Syntax

To avoid collisions with other scripts, all options need to be prefixed with osc-.

Example:

--script-opts=osc-optionA=value1,osc-optionB=value2

Configurable Options

layout

Default: bottombar

The layout for the OSC. Currently available are: box, slimbox, bottombar and topbar. Default pre-0.21.0 was 'box'.

seekbarstyle

Default: bar

Sets the style of the seekbar, slider (diamond marker), knob (circle marker with guide), or bar (fill). Default pre-0.21.0 was 'slider'.

seekbarkeyframes

Default: yes

Controls the mode used to seek when dragging the seekbar. By default, keyframes are used. If set to false, exact seeking on mouse drags will be used instead. Keyframes are preferred, but exact seeks may be useful in cases where keyframes cannot be found. Note that using exact seeks can potentially make mouse dragging much slower.

deadzonesize

Default: 0.5

Size of the deadzone. The deadzone is an area that makes the mouse act like leaving the window. Movement there won't make the OSC show up and it will hide immediately if the mouse enters it. The deadzone starts at the window border opposite to the OSC and the size controls how much of the window it will span. Values between 0.0 and 1.0, where 0 means the OSC will always popup with mouse movement in the window, and 1 means the OSC will only show up when the mouse hovers it. Default pre-0.21.0 was 0.

minmousemove

Default: 0

Minimum amount of pixels the mouse has to move between ticks to make the OSC show up. Default pre-0.21.0 was 3.

showwindowed

Default: yes

Enable the OSC when windowed

showfullscreen

Default: yes

Enable the OSC when fullscreen

scalewindowed

Default: 1.0

Scale factor of the OSC when windowed.

scalefullscreen

Default: 1.0

Scale factor of the OSC when fullscreen

scaleforcedwindow

Default: 2.0

Scale factor of the OSC when rendered on a forced (dummy) window

vidscale

Default: yes

Scale the OSC with the video no tries to keep the OSC size constant as much as the window size allows

valign

Default: 0.8

Vertical alignment, -1 (top) to 1 (bottom)

halign

Default: 0.0

Horizontal alignment, -1 (left) to 1 (right)

barmargin

Default: 0

Margin from bottom (bottombar) or top (topbar), in pixels

boxalpha

Default: 80

Alpha of the background box, 0 (opaque) to 255 (fully transparent)

hidetimeout

Default: 500

Duration in ms until the OSC hides if no mouse movement, must not be negative

fadeduration

Default: 200

Duration of fade out in ms, 0 = no fade

title

Default: ${media-title}

String that supports property expansion that will be displayed as OSC title. ASS tags are escaped, and newlines and trailing slashes are stripped.

tooltipborder

Default: 1

Size of the tooltip outline when using bottombar or topbar layouts

timetotal

Default: no

Show total time instead of time remaining

timems

Default: no

Display timecodes with milliseconds

seekranges

Default: yes

Display seekable ranges on the seekbar

visibility

Default: auto (auto hide/show on mouse move)

Also supports never and always

boxmaxchars

Default: 80

Max chars for the osc title at the box layout. mpv does not measure the text width on screen and so it needs to limit it by number of chars. The default is conservative to allow wide fonts to be used without overflow. However, with many common fonts a bigger number can be used. YMMV.

Script Commands

The OSC script listens to certain script commands. These commands can bound in input.conf, or sent by other scripts.

osc-message

Show a message on screen using the OSC. First argument is the message, second the duration in seconds.

osc-visibility

Controls visibility mode never / auto (on mouse move) / always and also cycle to cycle between the modes

Example

You could put this into input.conf to hide the OSC with the a key and to set auto mode (the default) with b:

a script-message osc-visibility never
b script-message osc-visibility auto

osc-playlist, osc-chapterlist, osc-tracklist

Shows a limited view of the respective type of list using the OSC. First argument is duration in seconds.