FFmpeg CLI Flags
A comprehensive list of all ffmpeg commandline flags.
It's really useful for CTRL+F searching random flags that you may come across in the wild!
This type of list was originally published here, but that source is out-of-date and no longer available.
The full list of flags for your local version of ffmpeg can be generated via ffmpeg -h full. This repo just exists to format it nicely and make it easily searchable by folks on the interwebs. I've also tried to break the options up into more manageable sections.
Note: Apparently, GitHub has a limit to the length of Markdown files it displays on repo landing pages. View the readme directly here for the full list in all its markdown-y goodness.
Table of Contents
- Usage
- Info
- Global options
- Per-file main options
- Video options
- Audio options
- Subtitle options
- Encoder & Decoder Options
- Demuxer Options
- Muxer Options
- AVFilter Audio
- AVFilter Video
- AVFilter Drawing
Usage
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Getting help:
-h -- print basic options
-h long -- print more options
-h full -- print all options (including all format and codec specific options, very long)
-h type=name -- print all options for the named decoder/encoder/demuxer/muxer/filter
See man ffmpeg for detailed description of the options.Info
-L show license
-h topic show help
-? topic show help
-help topic show help
--help topic show help
-version show version
-buildconf show build configuration
-formats show available formats
-muxers show available muxers
-demuxers show available demuxers
-devices show available devices
-codecs show available codecs
-decoders show available decoders
-encoders show available encoders
-bsfs show available bit stream filters
-protocols show available protocols
-filters show available filters
-pix_fmts show available pixel formats
-layouts show standard channel layouts
-sample_fmts show available audio sample formats
-colors show available color names
-opencl_bench run benchmark on all OpenCL devices and show results
-sources device list sources of the input device
-sinks device list sinks of the output device
-hwaccels show available HW acceleration methods
Global options
These affect the whole program instead of just one file.
-loglevel loglevel set logging level
-v loglevel set logging level
-report generate a report
-max_alloc bytes set maximum size of a single allocated block
-opencl_options set OpenCL environment options
-y overwrite output files
-n never overwrite output files
-ignore_unknown Ignore unknown stream types
-filter_threads number of non-complex filter threads
-filter_complex_threads number of threads for -filter_complex
-stats print progress report during encoding
-max_error_rate ratio of errors (0.0: no errors, 1.0: 100% error maximum error rate
-bits_per_raw_sample number set the number of bits per raw sample
-vol volume change audio volume (256=normal)
Advanced global options
-cpuflags flags force specific cpu flags
-hide_banner hide_banner do not show program banner
-copy_unknown Copy unknown stream types
-benchmark add timings for benchmarking
-benchmark_all add timings for each task
-progress url write program-readable progress information
-stdin enable or disable interaction on standard input
-timelimit limit set max runtime in seconds
-dump dump each input packet
-hex when dumping packets, also dump the payload
-vsync video sync method
-frame_drop_threshold frame drop threshold
-async audio sync method
-adrift_threshold threshold audio drift threshold
-copyts copy timestamps
-start_at_zero shift input timestamps to start at 0 when using copyts
-copytb mode copy input stream time base when stream copying
-dts_delta_threshold threshold timestamp discontinuity delta threshold
-dts_error_threshold threshold timestamp error delta threshold
-xerror error exit on error
-abort_on flags abort on the specified condition flags
-filter_complex graph_description create a complex filtergraph
-lavfi graph_description create a complex filtergraph
-filter_complex_script filename read complex filtergraph description from a file
-debug_ts print timestamp debugging info
-intra deprecated use -g 1
-sameq Removed
-same_quant Removed
-deinterlace this option is deprecated, use the yadif filter instead
-psnr calculate PSNR of compressed frames
-vstats dump video coding statistics to file
-vstats_file file dump video coding statistics to file
-vstats_version Version of the vstats format to use.
-qphist show QP histogram
-videotoolbox_pixfmt
-hwaccel_lax_profile_check attempt to decode anyway if HW accelerated decoder's supported profiles do not exactly match the stream
-vc channel deprecated, use -channel
-tvstd standard deprecated, use -standard
-isync this option is deprecated and does nothing
-override_ffserver override the options from ffserver
-sdp_file file specify a file in which to print sdp information
-init_hw_device args initialise hardware device
-filter_hw_device device set hardware device used when filtering
Per-file main options
-f fmt force format
-c codec codec name
-codec codec codec name
-pre preset preset name
-map_metadata outfile[,metadata]:infile[,metadata] set metadata information of outfile from infile
-t duration record or transcode "duration" seconds of audio/video
-to time_stop record or transcode stop time
-fs limit_size set the limit file size in bytes
-ss time_off set the start time offset
-sseof time_off set the start time offset relative to EOF
-seek_timestamp enable/disable seeking by timestamp with -ss
-timestamp time set the recording timestamp ('now' to set the current time)
-metadata string=string add metadata
-program title=string:st=number... add program with specified streams
-target type specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with optional prefixes "pal-", "ntsc-" or "film-")
-apad audio pad
-frames number set the number of frames to output
-filter filter_graph set stream filtergraph
-filter_script filename read stream filtergraph description from a file
-reinit_filter reinit filtergraph on input parameter changes
-discard discard
-disposition disposition
Per-file advanced options
-map [-]input_file_id[:stream_specifier][,sync_file_id[:stream_s set input stream mapping
-map_channel file.stream.channel[:syncfile.syncstream] map an audio channel from one stream to another
-map_chapters input_file_index set chapters mapping
-accurate_seek enable/disable accurate seeking with -ss
-itsoffset time_off set the input ts offset
-itsscale scale set the input ts scale
-dframes number set the number of data frames to output
-re read input at native frame rate
-shortest finish encoding within shortest input
-copyinkf copy initial non-keyframes
-copypriorss copy or discard frames before start time
-tag fourcc/tag force codec tag/fourcc
-q q use fixed quality scale (VBR)
-qscale q use fixed quality scale (VBR)
-profile profile set profile
-attach filename add an attachment to the output file
-dump_attachment filename extract an attachment into a file
-stream_loop loop count set number of times input stream shall be looped
-thread_queue_size set the maximum number of queued packets from the demuxer
-find_stream_info read and decode the streams to fill missing information with heuristics
-autorotate automatically insert correct rotate filters
-muxdelay seconds set the maximum demux-decode delay
-muxpreload seconds set the initial demux-decode delay
-time_base ratio set the desired time base hint for output stream (1:24, 1:48000 or 0.04166, 2.0833e-5)
-enc_time_base ratio set the desired time base for the encoder (1:24, 1:48000 or 0.04166, 2.0833e-5). two special values are defined - 0 = use frame rate (video) or sample rate (audio),-1 = match source time base
-bsf bitstream_filters A comma-separated list of bitstream filters
-fpre filename set options from indicated preset file
-max_muxing_queue_size packets maximum number of packets that can be buffered while waiting for all streams to initialize
-dcodec codec force data codec ('copy' to copy stream)
Video options
-vframes number set the number of video frames to output
-r rate set frame rate (Hz value, fraction or abbreviation)
-s size set frame size (WxH or abbreviation)
-aspect aspect set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)
-bits_per_raw_sample number set the number of bits per raw sample
-vn disable video
-vcodec codec force video codec ('copy' to copy stream)
-timecode hh:mm:ss[:;.]ff set initial TimeCode value.
-pass n select the pass number (1 to 3)
-vf filter_graph set video filters
-ab bitrate audio bitrate (please use -b:a)
-b bitrate video bitrate (please use -b:v)
-dn disable data
Advanced Video options
-pix_fmt format set pixel format
-intra deprecated use -g 1
-rc_override override rate control override for specific intervals
-sameq Removed
-same_quant Removed
-passlogfile prefix select two pass log file name prefix
-deinterlace this option is deprecated, use the yadif filter instead
-psnr calculate PSNR of compressed frames
-vstats dump video coding statistics to file
-vstats_file file dump video coding statistics to file
-vstats_version Version of the vstats format to use.
-intra_matrix matrix specify intra matrix coeffs
-inter_matrix matrix specify inter matrix coeffs
-chroma_intra_matrix matrix specify intra matrix coeffs
-top top=1/bottom=0/auto=-1 field first
-vtag fourcc/tag force video tag/fourcc
-qphist show QP histogram
-force_fps force the selected framerate, disable the best supported framerate selection
-streamid streamIndex:value set the value of an outfile streamid
-force_key_frames timestamps force key frames at specified timestamps
-hwaccel hwaccel name use HW accelerated decoding
-hwaccel_device devicename select a device for HW acceleration
-hwaccel_output_format format select output format used with HW accelerated decoding
-vc channel deprecated, use -channel
-tvstd standard deprecated, use -standard
-vbsf video bitstream_filters deprecated
-vpre preset set the video options to the indicated preset
Audio options
-aframes number set the number of audio frames to output
-aq quality set audio quality (codec-specific)
-ar rate set audio sampling rate (in Hz)
-ac channels set number of audio channels
-an disable audio
-acodec codec force audio codec ('copy' to copy stream)
-vol volume change audio volume (256=normal)
-af filter_graph set audio filters
Advanced Audio options
-atag fourcc/tag force audio tag/fourcc
-sample_fmt format set sample format
-channel_layout layout set channel layout
-guess_layout_max set the maximum number of channels to try to guess the channel layout
-absf audio bitstream_filters deprecated
-apre preset set the audio options to the indicated preset
Subtitle options
-s size set frame size (WxH or abbreviation)
-sn disable subtitle
-scodec codec force subtitle codec ('copy' to copy stream)
-stag fourcc/tag force subtitle tag/fourcc
-fix_sub_duration fix subtitles duration
-canvas_size size set canvas size (WxH or abbreviation)
-spre preset set the subtitle options to the indicated preset
Encoder & Decoder Options
AVCodecContext AVOptions
-b <int64> E..VA... set bitrate (in bits/s) (from 0 to I64_MAX) (default 200000)
-ab <int64> E...A... set bitrate (in bits/s) (from 0 to INT_MAX) (default 128000)
-bt <int> E..V.... Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality. (from 1 to INT_MAX) (default 4e+06)
-flags <flags> ED.VAS.. (default 0)
unaligned .D.V.... allow decoders to produce unaligned output
mv4 E..V.... use four motion vectors per macroblock (MPEG-4)
qpel E..V.... use 1/4-pel motion compensation
loop E..V.... use loop filter
gmc E..V.... use gmc
mv0 E..V.... always try a mb with mv=<0,0>
gray ED.V.... only decode/encode grayscale
psnr E..V.... error[?] variables will be set during encoding
truncated .D.V.... Input bitstream might be randomly truncated
naq E..V.... normalize adaptive quantization
ildct E..V.... use interlaced DCT
low_delay ED.V.... force low delay
global_header E..VA... place global headers in extradata instead of every keyframe
bitexact ED.VAS.. use only bitexact functions (except (I)DCT)
aic E..V.... H.263 advanced intra coding / MPEG-4 AC prediction
ilme E..V.... interlaced motion estimation
cgop E..V.... closed GOP
output_corrupt .D.V.... Output even potentially corrupted frames
-me_method <int> E..V.... set motion estimation method (from INT_MIN to INT_MAX) (default epzs)
zero E..V.... zero motion estimation (fastest)
full E..V.... full motion estimation (slowest)
epzs E..V.... EPZS motion estimation
esa E..V.... esa motion estimation (alias for full)
tesa E..V.... tesa motion estimation
dia E..V.... diamond motion estimation (alias for EPZS)
log E..V.... log motion estimation
phods E..V.... phods motion estimation
x1 E..V.... X1 motion estimation
hex E..V.... hex motion estimation
umh E..V.... umh motion estimation
iter E..V.... iter motion estimation
-g <int> E..V.... set the group of picture (GOP) size (from INT_MIN to INT_MAX) (default 12)
-ar <int> ED..A... set audio sampling rate (in Hz) (from 0 to INT_MAX) (default 0)
-ac <int> ED..A... set number of audio channels (from 0 to INT_MAX) (default 0)
-cutoff <int> E...A... set cutoff bandwidth (from INT_MIN to INT_MAX) (default 0)
-frame_size <int> E...A... (from 0 to INT_MAX) (default 0)
-qcomp <float> E..V.... video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0 (from -FLT_MAX to FLT_MAX) (default 0.5)
-qblur <float> E..V.... video quantizer scale blur (VBR) (from -1 to FLT_MAX) (default 0.5)
-qmin <int> E..V.... minimum video quantizer scale (VBR) (from -1 to 69) (default 2)
-qmax <int> E..V.... maximum video quantizer scale (VBR) (from -1 to 1024) (default 31)
-qdiff <int> E..V.... maximum difference between the quantizer scales (VBR) (from INT_MIN to INT_MAX) (default 3)
-bf <int> E..V.... set maximum number of B-frames between non-B-frames (from -1 to INT_MAX) (default 0)
-b_qfactor <float> E..V.... QP factor between P- and B-frames (from -FLT_MAX to FLT_MAX) (default 1.25)
-rc_strategy <int> E..V.... ratecontrol method (from INT_MIN to INT_MAX) (default 0)
-b_strategy <int> E..V.... strategy to choose between I/P/B-frames (from INT_MIN to INT_MAX) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-bug <flags> .D.V.... work around not autodetected encoder bugs (default autodetect)
autodetect .D.V....
old_msmpeg4 .D.V.... some old lavc-generated MSMPEG4v3 files (no autodetection)
xvid_ilace .D.V.... Xvid interlacing bug (autodetected if FOURCC == XVIX)
ump4 .D.V.... (autodetected if FOURCC == UMP4)
no_padding .D.V.... padding bug (autodetected)
amv .D.V....
ac_vlc .D.V.... illegal VLC bug (autodetected per FOURCC)
qpel_chroma .D.V....
std_qpel .D.V.... old standard qpel (autodetected per FOURCC/version)
qpel_chroma2 .D.V....
direct_blocksize .D.V.... direct-qpel-blocksize bug (autodetected per FOURCC/version)
edge .D.V.... edge padding bug (autodetected per FOURCC/version)
hpel_chroma .D.V....
dc_clip .D.V....
ms .D.V.... work around various bugs in Microsoft's broken decoders
trunc .D.V.... truncated frames
iedge .D.V....
-strict <int> ED.VA... how strictly to follow the standards (from INT_MIN to INT_MAX) (default normal)
very ED.VA... strictly conform to a older more strict version of the spec or reference software
strict ED.VA... strictly conform to all the things in the spec no matter what the consequences
normal ED.VA...
unofficial ED.VA... allow unofficial extensions
experimental ED.VA... allow non-standardized experimental things
-b_qoffset <float> E..V.... QP offset between P- and B-frames (from -FLT_MAX to FLT_MAX) (default 1.25)
-err_detect <flags> .D.VA... set error detection flags (default 0)
crccheck .D.VA... verify embedded CRCs
bitstream .D.VA... detect bitstream specification deviations
buffer .D.VA... detect improper bitstream length
explode .D.VA... abort decoding on minor error detection
ignore_err .D.VA... ignore errors
careful .D.VA... consider things that violate the spec, are fast to check and have not been seen in the wild as errors
compliant .D.VA... consider all spec non compliancies as errors
aggressive .D.VA... consider things that a sane encoder should not do as an error
-mpeg_quant <int> E..V.... use MPEG quantizers instead of H.263 (from INT_MIN to INT_MAX) (default 0)
-qsquish <float> E..V.... deprecated, use encoder private options instead (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... deprecated, use encoder private options instead (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... deprecated, use encoder private options instead (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... deprecated, use encoder private options instead
-maxrate <int64> E..VA... maximum bitrate (in bits/s). Used for VBV together with bufsize. (from 0 to INT_MAX) (default 0)
-minrate <int64> E..VA... minimum bitrate (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise. (from INT_MIN to INT_MAX) (default 0)
-bufsize <int> E..VA... set ratecontrol buffer size (in bits) (from INT_MIN to INT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... deprecated, use encoder private options instead (from -FLT_MAX to FLT_MAX) (default 1)
-i_qfactor <float> E..V.... QP factor between P- and I-frames (from -FLT_MAX to FLT_MAX) (default -0.8)
-i_qoffset <float> E..V.... QP offset between P- and I-frames (from -FLT_MAX to FLT_MAX) (default 0)
-rc_init_cplx <float> E..V.... deprecated, use encoder private options instead (from -FLT_MAX to FLT_MAX) (default 0)
-dct <int> E..V.... DCT algorithm (from 0 to INT_MAX) (default auto)
auto E..V.... autoselect a good one
fastint E..V.... fast integer
int E..V.... accurate integer
mmx E..V....
altivec E..V....
faan E..V.... floating point AAN DCT
-lumi_mask <float> E..V.... compresses bright areas stronger than medium ones (from -FLT_MAX to FLT_MAX) (default 0)
-tcplx_mask <float> E..V.... temporal complexity masking (from -FLT_MAX to FLT_MAX) (default 0)
-scplx_mask <float> E..V.... spatial complexity masking (from -FLT_MAX to FLT_MAX) (default 0)
-p_mask <float> E..V.... inter masking (from -FLT_MAX to FLT_MAX) (default 0)
-dark_mask <float> E..V.... compresses dark areas stronger than medium ones (from -FLT_MAX to FLT_MAX) (default 0)
-idct <int> ED.V.... select IDCT implementation (from 0 to INT_MAX) (default auto)
auto ED.V....
int ED.V....
simple ED.V....
simplemmx ED.V....
arm ED.V....
altivec ED.V....
sh4 ED.V....
simplearm ED.V....
simplearmv5te ED.V....
simplearmv6 ED.V....
simpleneon ED.V....
simplealpha ED.V....
ipp ED.V....
xvid ED.V....
xvidmmx ED.V.... deprecated, for compatibility only
faani ED.V.... floating point AAN IDCT
simpleauto ED.V....
-ec <flags> .D.V.... set error concealment strategy (default guess_mvs+deblock)
guess_mvs .D.V.... iterative motion vector (MV) search (slow)
deblock .D.V.... use strong deblock filter for damaged MBs
favor_inter .D.V.... favor predicting from the previous frame
-pred <int> E..V.... prediction method (from INT_MIN to INT_MAX) (default left)
left E..V....
plane E..V....
median E..V....
-aspect <rational> E..V.... sample aspect ratio (from 0 to 10) (default 0/1)
-sar <rational> E..V.... sample aspect ratio (from 0 to 10) (default 0/1)
-debug <flags> ED.VAS.. print specific debug info (default 0)
pict .D.V.... picture info
rc E..V.... rate control
bitstream .D.V....
mb_type .D.V.... macroblock (MB) type
qp .D.V.... per-block quantization parameter (QP)
mv .D.V.... motion vector
dct_coeff .D.V....
green_metadata .D.V....
skip .D.V....
startcode .D.V....
pts .D.V....
er .D.V.... error recognition
mmco .D.V.... memory management control operations (H.264)
bugs .D.V....
vis_qp .D.V.... visualize quantization parameter (QP), lower QP are tinted greener
vis_mb_type .D.V.... visualize block types
buffers .D.V.... picture buffer allocations
thread_ops .D.VA... threading operations
nomc .D.VA... skip motion compensation
-vismv <flags> .D.V.... visualize motion vectors (MVs) (deprecated) (default 0)
pf .D.V.... forward predicted MVs of P-frames
bf .D.V.... forward predicted MVs of B-frames
bb .D.V.... backward predicted MVs of B-frames
-cmp <int> E..V.... full-pel ME compare function (from INT_MIN to INT_MAX) (default sad)
sad E..V.... sum of absolute differences, fast
sse E..V.... sum of squared errors
satd E..V.... sum of absolute Hadamard transformed differences
dct E..V.... sum of absolute DCT transformed differences
psnr E..V.... sum of squared quantization errors (avoid, low quality)
bit E..V.... number of bits needed for the block
rd E..V.... rate distortion optimal, slow
zero E..V.... 0
vsad E..V.... sum of absolute vertical differences
vsse E..V.... sum of squared vertical differences
nsse E..V.... noise preserving sum of squared differences
w53 E..V.... 5/3 wavelet, only used in snow
w97 E..V.... 9/7 wavelet, only used in snow
dctmax E..V....
chroma E..V....
msad E..V.... sum of absolute differences, median predicted
-subcmp <int> E..V.... sub-pel ME compare function (from INT_MIN to INT_MAX) (default sad)
sad E..V.... sum of absolute differences, fast
sse E..V.... sum of squared errors
satd E..V.... sum of absolute Hadamard transformed differences
dct E..V.... sum of absolute DCT transformed differences
psnr E..V.... sum of squared quantization errors (avoid, low quality)
bit E..V.... number of bits needed for the block
rd E..V.... rate distortion optimal, slow
zero E..V.... 0
vsad E..V.... sum of absolute vertical differences
vsse E..V.... sum of squared vertical differences
nsse E..V.... noise preserving sum of squared differences
w53 E..V.... 5/3 wavelet, only used in snow
w97 E..V.... 9/7 wavelet, only used in snow
dctmax E..V....
chroma E..V....
msad E..V.... sum of absolute differences, median predicted
-mbcmp <int> E..V.... macroblock compare function (from INT_MIN to INT_MAX) (default sad)
sad E..V.... sum of absolute differences, fast
sse E..V.... sum of squared errors
satd E..V.... sum of absolute Hadamard transformed differences
dct E..V.... sum of absolute DCT transformed differences
psnr E..V.... sum of squared quantization errors (avoid, low quality)
bit E..V.... number of bits needed for the block
rd E..V.... rate distortion optimal, slow
zero E..V.... 0
vsad E..V.... sum of absolute vertical differences
vsse E..V.... sum of squared vertical differences
nsse E..V.... noise preserving sum of squared differences
w53 E..V.... 5/3 wavelet, only used in snow
w97 E..V.... 9/7 wavelet, only used in snow
dctmax E..V....
chroma E..V....
msad E..V.... sum of absolute differences, median predicted
-ildctcmp <int> E..V.... interlaced DCT compare function (from INT_MIN to INT_MAX) (default vsad)
sad E..V.... sum of absolute differences, fast
sse E..V.... sum of squared errors
satd E..V.... sum of absolute Hadamard transformed differences
dct E..V.... sum of absolute DCT transformed differences
psnr E..V.... sum of squared quantization errors (avoid, low quality)
bit E..V.... number of bits needed for the block
rd E..V.... rate distortion optimal, slow
zero E..V.... 0
vsad E..V.... sum of absolute vertical differences
vsse E..V.... sum of squared vertical differences
nsse E..V.... noise preserving sum of squared differences
w53 E..V.... 5/3 wavelet, only used in snow
w97 E..V.... 9/7 wavelet, only used in snow
dctmax E..V....
chroma E..V....
msad E..V.... sum of absolute differences, median predicted
-dia_size <int> E..V.... diamond type & size for motion estimation (from INT_MIN to INT_MAX) (default 0)
-last_pred <int> E..V.... amount of motion predictors from the previous frame (from INT_MIN to INT_MAX) (default 0)
-preme <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
-precmp <int> E..V.... pre motion estimation compare function (from INT_MIN to INT_MAX) (default sad)
sad E..V.... sum of absolute differences, fast
sse E..V.... sum of squared errors
satd E..V.... sum of absolute Hadamard transformed differences
dct E..V.... sum of absolute DCT transformed differences
psnr E..V.... sum of squared quantization errors (avoid, low quality)
bit E..V.... number of bits needed for the block
rd E..V.... rate distortion optimal, slow
zero E..V.... 0
vsad E..V.... sum of absolute vertical differences
vsse E..V.... sum of squared vertical differences
nsse E..V.... noise preserving sum of squared differences
w53 E..V.... 5/3 wavelet, only used in snow
w97 E..V.... 9/7 wavelet, only used in snow
dctmax E..V....
chroma E..V....
msad E..V.... sum of absolute differences, median predicted
-pre_dia_size <int> E..V.... diamond type & size for motion estimation pre-pass (from INT_MIN to INT_MAX) (default 0)
-subq <int> E..V.... sub-pel motion estimation quality (from INT_MIN to INT_MAX) (default 8)
-me_range <int> E..V.... limit motion vectors range (1023 for DivX player) (from INT_MIN to INT_MAX) (default 0)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-global_quality <int> E..VA... (from INT_MIN to INT_MAX) (default 0)
-coder <int> E..V.... (from INT_MIN to INT_MAX) (default vlc)
vlc E..V.... variable length coder / Huffman coder
ac E..V.... arithmetic coder
raw E..V.... raw (no encoding)
rle E..V.... run-length coder
deflate E..V.... deflate-based coder
-context <int> E..V.... context model (from INT_MIN to INT_MAX) (default 0)
-mbd <int> E..V.... macroblock decision algorithm (high quality mode) (from 0 to 2) (default simple)
simple E..V.... use mbcmp
bits E..V.... use fewest bits
rd E..V.... use best rate distortion
-sc_threshold <int> E..V.... scene change threshold (from INT_MIN to INT_MAX) (default 0)
-lmin <int> E..V.... deprecated, use encoder private options instead (from 0 to INT_MAX) (default 0)
-lmax <int> E..V.... deprecated, use encoder private options instead (from 0 to INT_MAX) (default 0)
-nr <int> E..V.... noise reduction (from INT_MIN to INT_MAX) (default 0)
-rc_init_occupancy <int> E..V.... number of bits which should be loaded into the rc buffer before decoding starts (from INT_MIN to INT_MAX) (default 0)
-flags2 <flags> ED.VA... (default 0)
fast E..V.... allow non-spec-compliant speedup tricks
noout E..V.... skip bitstream encoding
ignorecrop .D.V.... ignore cropping information from sps
local_header E..V.... place global headers at every keyframe instead of in extradata
chunks .D.V.... Frame data might be split into multiple chunks
showall .D.V.... Show all frames before the first keyframe
export_mvs .D.V.... export motion vectors through frame side data
skip_manual .D.V.... do not skip samples and export skip information as frame side data
ass_ro_flush_noop .D...S.. do not reset ASS ReadOrder field on flush
-error <int> E..V.... (from INT_MIN to INT_MAX) (default 0)
-threads <int> ED.VA... set the number of threads (from 0 to INT_MAX) (default 1)
auto ED.V.... autodetect a suitable number of threads to use
-me_threshold <int> E..V.... motion estimation threshold (from INT_MIN to INT_MAX) (default 0)
-mb_threshold <int> E..V.... macroblock threshold (from INT_MIN to INT_MAX) (default 0)
-dc <int> E..V.... intra_dc_precision (from -8 to 16) (default 0)
-nssew <int> E..V.... nsse weight (from INT_MIN to INT_MAX) (default 8)
-skip_top <int> .D.V.... number of macroblock rows at the top which are skipped (from INT_MIN to INT_MAX) (default 0)
-skip_bottom <int> .D.V.... number of macroblock rows at the bottom which are skipped (from INT_MIN to INT_MAX) (default 0)
-profile <int> E..VA... (from INT_MIN to INT_MAX) (default unknown)
unknown E..VA...
aac_main E...A...
aac_low E...A...
aac_ssr E...A...
aac_ltp E...A...
aac_he E...A...
aac_he_v2 E...A...
aac_ld E...A...
aac_eld E...A...
mpeg2_aac_low E...A...
mpeg2_aac_he E...A...
dts E...A...
dts_es E...A...
dts_96_24 E...A...
dts_hd_hra E...A...
dts_hd_ma E...A...
mpeg4_sp E..V....
mpeg4_core E..V....
mpeg4_main E..V....
mpeg4_asp E..V....
main10 E..V....
-level <int> E..VA... (from INT_MIN to INT_MAX) (default unknown)
unknown E..VA...
-lowres <int> .D.VA... decode at 1= 1/2, 2=1/4, 3=1/8 resolutions (from 0 to INT_MAX) (default 0)
-skip_threshold <int> E..V.... frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skipcmp <int> E..V.... frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... sum of absolute differences, fast
sse E..V.... sum of squared errors
satd E..V.... sum of absolute Hadamard transformed differences
dct E..V.... sum of absolute DCT transformed differences
psnr E..V.... sum of squared quantization errors (avoid, low quality)
bit E..V.... number of bits needed for the block
rd E..V.... rate distortion optimal, slow
zero E..V.... 0
vsad E..V.... sum of absolute vertical differences
vsse E..V.... sum of squared vertical differences
nsse E..V.... noise preserving sum of squared differences
w53 E..V.... 5/3 wavelet, only used in snow
w97 E..V.... 9/7 wavelet, only used in snow
dctmax E..V....
chroma E..V....
msad E..V.... sum of absolute differences, median predicted
-border_mask <float> E..V.... deprecated, use encoder private options instead (from -FLT_MAX to FLT_MAX) (default 0)
-mblmin <int> E..V.... minimum macroblock Lagrange factor (VBR) (from 1 to 32767) (default 236)
-mblmax <int> E..V.... maximum macroblock Lagrange factor (VBR) (from 1 to 32767) (default 3658)
-mepc <int> E..V.... motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-skip_loop_filter <int> .D.V.... skip loop filtering process for the selected frames (from INT_MIN to INT_MAX) (default default)
none .D.V.... discard no frame
default .D.V.... discard useless frames
noref .D.V.... discard all non-reference frames
bidir .D.V.... discard all bidirectional frames
nokey .D.V.... discard all frames except keyframes
nointra .D.V.... discard all frames except I frames
all .D.V.... discard all frames
-skip_idct <int> .D.V.... skip IDCT/dequantization for the selected frames (from INT_MIN to INT_MAX) (default default)
none .D.V.... discard no frame
default .D.V.... discard useless frames
noref .D.V.... discard all non-reference frames
bidir .D.V.... discard all bidirectional frames
nokey .D.V.... discard all frames except keyframes
nointra .D.V.... discard all frames except I frames
all .D.V.... discard all frames
-skip_frame <int> .D.V.... skip decoding for the selected frames (from INT_MIN to INT_MAX) (default default)
none .D.V.... discard no frame
default .D.V.... discard useless frames
noref .D.V.... discard all non-reference frames
bidir .D.V.... discard all bidirectional frames
nokey .D.V.... discard all frames except keyframes
nointra .D.V.... discard all frames except I frames
all .D.V.... discard all frames
-bidir_refine <int> E..V.... refine the two motion vectors used in bidirectional macroblocks (from 0 to 4) (default 1)
-brd_scale <int> E..V.... downscale frames for dynamic B-frame decision (from 0 to 10) (default 0)
-keyint_min <int> E..V.... minimum interval between IDR-frames (from INT_MIN to INT_MAX) (default 25)
-refs <int> E..V.... reference frames to consider for motion compensation (from INT_MIN to INT_MAX) (default 1)
-chromaoffset <int> E..V.... chroma QP offset from luma (from INT_MIN to INT_MAX) (default 0)
-trellis <int> E..VA... rate-distortion optimal quantization (from INT_MIN to INT_MAX) (default 0)
-sc_factor <int> E..V.... multiplied by qscale for each frame and added to scene_change_score (from 0 to INT_MAX) (default 6)
-mv0_threshold <int> E..V.... (from 0 to INT_MAX) (default 256)
-b_sensitivity <int> E..V.... adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-compression_level <int> E..VA... (from INT_MIN to INT_MAX) (default -1)
-min_prediction_order <int> E...A... (from INT_MIN to INT_MAX) (default -1)
-max_prediction_order <int> E...A... (from INT_MIN to INT_MAX) (default -1)
-timecode_frame_start <int64> E..V.... GOP timecode frame start number, in non-drop-frame format (from -1 to I64_MAX) (default -1)
-channel_layout <uint64> ED..A... (from 0 to 1.84467e+19) (default 0)
-request_channel_layout <uint64> .D..A... (from 0 to 1.84467e+19) (default 0)
-rc_max_vbv_use <float> E..V.... (from 0 to FLT_MAX) (default 0)
-rc_min_vbv_use <float> E..V.... (from 0 to FLT_MAX) (default 3)
-ticks_per_frame <int> ED.VA... (from 1 to INT_MAX) (default 1)
-color_primaries <int> ED.V.... color primaries (from 1 to INT_MAX) (default unknown)
bt709 ED.V.... BT.709
unknown ED.V.... Unspecified
bt470m ED.V.... BT.470 M
bt470bg ED.V.... BT.470 BG
smpte170m ED.V.... SMPTE 170 M
smpte240m ED.V.... SMPTE 240 M
film ED.V.... Film
bt2020 ED.V.... BT.2020
smpte428 ED.V.... SMPTE 428-1
smpte428_1 ED.V.... SMPTE 428-1
smpte431 ED.V.... SMPTE 431-2
smpte432 ED.V.... SMPTE 422-1
jedec-p22 ED.V.... JEDEC P22
unspecified ED.V.... Unspecified
-color_trc <int> ED.V.... color transfer characteristics (from 1 to INT_MAX) (default unknown)
bt709 ED.V.... BT.709
unknown ED.V.... Unspecified
gamma22 ED.V.... BT.470 M
gamma28 ED.V.... BT.470 BG
smpte170m ED.V.... SMPTE 170 M
smpte240m ED.V.... SMPTE 240 M
linear ED.V.... Linear
log100 ED.V.... Log
log316 ED.V.... Log square root
iec61966-2-4 ED.V.... IEC 61966-2-4
bt1361e ED.V.... BT.1361
iec61966-2-1 ED.V.... IEC 61966-2-1
bt2020-10 ED.V.... BT.2020 - 10 bit
bt2020-12 ED.V.... BT.2020 - 12 bit
smpte2084 ED.V.... SMPTE 2084
smpte428 ED.V.... SMPTE 428-1
arib-std-b67 ED.V.... ARIB STD-B67
unspecified ED.V.... Unspecified
log ED.V.... Log
log_sqrt ED.V.... Log square root
iec61966_2_4 ED.V.... IEC 61966-2-4
bt1361 ED.V.... BT.1361
iec61966_2_1 ED.V.... IEC 61966-2-1
bt2020_10bit ED.V.... BT.2020 - 10 bit
bt2020_12bit ED.V.... BT.2020 - 12 bit
smpte428_1 ED.V.... SMPTE 428-1
-colorspace <int> ED.V.... color space (from 0 to INT_MAX) (default unknown)
rgb ED.V.... RGB
bt709 ED.V.... BT.709
unknown ED.V.... Unspecified
fcc ED.V.... FCC
bt470bg ED.V.... BT.470 BG
smpte170m ED.V.... SMPTE 170 M
smpte240m ED.V.... SMPTE 240 M
ycgco ED.V.... YCGCO
bt2020nc ED.V.... BT.2020 NCL
bt2020c ED.V.... BT.2020 CL
smpte2085 ED.V.... SMPTE 2085
unspecified ED.V.... Unspecified
ycocg ED.V.... YCGCO
bt2020_ncl ED.V.... BT.2020 NCL
bt2020_cl ED.V.... BT.2020 CL
-color_range <int> ED.V.... color range (from 0 to INT_MAX) (default unknown)
unknown ED.V.... Unspecified
tv ED.V.... MPEG (219*2^(n-8))
pc ED.V.... JPEG (2^n-1)
unspecified ED.V.... Unspecified
mpeg ED.V.... MPEG (219*2^(n-8))
jpeg ED.V.... JPEG (2^n-1)
-chroma_sample_location <int> ED.V.... chroma sample location (from 0 to INT_MAX) (default unknown)
unknown ED.V.... Unspecified
left ED.V.... Left
center ED.V.... Center
topleft ED.V.... Top-left
top ED.V.... Top
bottomleft ED.V.... Bottom-left
bottom ED.V.... Bottom
unspecified ED.V.... Unspecified
-slices <int> E..V.... set the number of slices, used in parallelized encoding (from 0 to INT_MAX) (default 0)
-thread_type <flags> ED.VA... select multithreading type (default slice+frame)
slice ED.V....
frame ED.V....
-audio_service_type <int> E...A... audio service type (from 0 to 8) (default ma)
ma E...A... Main Audio Service
ef E...A... Effects
vi E...A... Visually Impaired
hi E...A... Hearing Impaired
di E...A... Dialogue
co E...A... Commentary
em E...A... Emergency
vo E...A... Voice Over
ka E...A... Karaoke
-request_sample_fmt <sample_fmt> .D..A... sample format audio decoders should prefer (default none)
-sub_charenc <string> .D...S.. set input text subtitles character encoding
-sub_charenc_mode <flags> .D...S.. set input text subtitles character encoding mode (default 0)
do_nothing .D...S..
auto .D...S..
pre_decoder .D...S..
-sub_text_format <int> .D...S.. set decoded text subtitle format (from 0 to 1) (default ass_with_timings)
ass .D...S..
ass_with_timings .D...S..
-refcounted_frames <boolean> .D.VA... (default false)
-side_data_only_packets <boolean> E..VA... (default true)
-apply_cropping <boolean> .D.V.... (default true)
-skip_alpha <boolean> .D.V.... Skip processing alpha (default false)
-field_order <int> ED.V.... Field order (from 0 to 5) (default 0)
progressive ED.V....
tt ED.V....
bb ED.V....
tb ED.V....
bt ED.V....
-dump_separator <string> ED.VAS.. set information dump field separator
-codec_whitelist <string> .D.VAS.. List of decoders that are allowed to be used
-max_pixels <int64> ED.VAS.. Maximum number of pixels (from 0 to INT_MAX) (default INT_MAX)
-hwaccel_flags <flags> .D.V.... (default ignore_level)
ignore_level .D.V.... ignore level even if the codec level used is unknown or higher than the maximum supported level reported by the hardware driver
allow_high_depth .D.V.... allow to output YUV pixel formats with a different chroma sampling than 4:2:0 and/or other than 8 bits per component
allow_profile_mismatch .D.V.... attempt to decode anyway if HW accelerated decoder's supported profiles do not exactly match the stream
amv encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
-pred <int> E..V.... Prediction method (from 1 to 3) (default left)
left E..V....
plane E..V....
median E..V....
-huffman <int> E..V.... Huffman table strategy (from 0 to 1) (default optimal)
default E..V....
optimal E..V....
APNG encoder AVOptions
-dpi <int> E..V.... Set image resolution (in dots per inch) (from 0 to 65536) (default 0)
-dpm <int> E..V.... Set image resolution (in dots per meter) (from 0 to 65536) (default 0)
-pred <int> E..V.... Prediction method (from 0 to 5) (default none)
none E..V....
sub E..V....
up E..V....
avg E..V....
paeth E..V....
mixed E..V....
cinepak AVOptions
-max_extra_cb_iterations <int> E..V.... Max extra codebook recalculation passes, more is better and slower (from 0 to INT_MAX) (default 2)
-skip_empty_cb <boolean> E..V.... Avoid wasting bytes, ignore vintage MacOS decoder (default false)
-max_strips <int> E..V.... Limit strips/frame, vintage compatible is 1..3, otherwise the more the better (from 1 to 32) (default 3)
-min_strips <int> E..V.... Enforce min strips/frame, more is worse and faster, must be <= max_strips (from 1 to 32) (default 1)
-strip_number_adaptivity <int> E..V.... How fast the strip number adapts, more is slightly better, much slower (from 0 to 31) (default 0)
cljr encoder AVOptions
-dither_type <int> E..V.... Dither type (from 0 to 2) (default 1)
dnxhd AVOptions
-nitris_compat <boolean> E..V.... encode with Avid Nitris compatibility (default false)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 0)
-profile <int> E..V.... (from 0 to 5) (default dnxhd)
dnxhd E..V....
dnxhr_444 E..V....
dnxhr_hqx E..V....
dnxhr_hq E..V....
dnxhr_sq E..V....
dnxhr_lb E..V....
dvvideo encoder AVOptions
-quant_deadzone <int> E..V.... Quantizer dead zone (from 0 to 1024) (default 7)
EXR AVOptions
-layer <string> .D.V.... Set the decoding layer (default "")
-gamma <float> .D.V.... Set the float gamma value when decoding (from 0.001 to FLT_MAX) (default 1)
-apply_trc <int> .D.V.... color transfer characteristics to apply to EXR linear input (from 1 to 18) (default gamma)
bt709 .D.V.... BT.709
gamma .D.V.... gamma
gamma22 .D.V.... BT.470 M
gamma28 .D.V.... BT.470 BG
smpte170m .D.V.... SMPTE 170 M
smpte240m .D.V.... SMPTE 240 M
linear .D.V.... Linear
log .D.V.... Log
log_sqrt .D.V.... Log square root
iec61966_2_4 .D.V.... IEC 61966-2-4
bt1361 .D.V.... BT.1361
iec61966_2_1 .D.V.... IEC 61966-2-1
bt2020_10bit .D.V.... BT.2020 - 10 bit
bt2020_12bit .D.V.... BT.2020 - 12 bit
smpte2084 .D.V.... SMPTE ST 2084
smpte428_1 .D.V.... SMPTE ST 428-1
ffv1 encoder AVOptions
-slicecrc <boolean> E..V.... Protect slices with CRCs (default auto)
-coder <int> E..V.... Coder type (from -2 to 2) (default rice)
rice E..V.... Golomb rice
range_def E..V.... Range with default table
range_tab E..V.... Range with custom table
ac E..V.... Range with custom table (the ac option exists for compatibility and is deprecated)
-context <int> E..V.... Context model (from 0 to 1) (default 0)
ffvhuff AVOptions
-non_deterministic <boolean> E..V.... Allow multithreading for e.g. context=1 at the expense of determinism (default true)
-pred <int> E..V.... Prediction method (from 0 to 2) (default left)
left E..V....
plane E..V....
median E..V....
-context <int> E..V.... Set per-frame huffman tables (from 0 to 1) (default 0)
FIC encoder AVOptions
-skip_cursor <boolean> .D.V.... skip the cursor (default false)
FITS decoder AVOptions
-blank_value <int> .D.V.... value that is used to replace BLANK pixels in data array (from 0 to 65535) (default 0)
flv encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
frwu Decoder AVOptions
-change_field_order <boolean> .D.V.... Change field order (default false)
GIF encoder AVOptions
-gifflags <flags> E..V.... set GIF flags (default offsetting+transdiff)
offsetting E..V.... enable picture offsetting
transdiff E..V.... enable transparency detection between frames
gif decoder AVOptions
-trans_color <int> .D.V.... color value (ARGB) that is used instead of transparent color (from 0 to UINT32_MAX) (default 1.67772e+07)
h261 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
H.263 encoder AVOptions
-obmc <boolean> E..V.... use overlapped block motion compensation. (default false)
-mb_info <int> E..V.... emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size (from 0 to INT_MAX) (default 0)
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
H.263p encoder AVOptions
-umv <boolean> E..V.... Use unlimited motion vectors. (default false)
-aiv <boolean> E..V.... Use alternative inter VLC. (default false)
-obmc <boolean> E..V.... use overlapped block motion compensation. (default false)
-structured_slices <boolean> E..V.... Write slice start position at every GOB header instead of just GOB number. (default false)
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
H264 Decoder AVOptions
-enable_er <boolean> .D.V.... Enable error resilience on damaged frames (unsafe) (default auto)
HEVC decoder AVOptions
-apply_defdispwin <boolean> .D.V.... Apply default display window from VUI (default false)
-strict-displaywin <boolean> .D.V.... stricly apply default display window size (default false)
huffyuv AVOptions
-non_deterministic <boolean> E..V.... Allow multithreading for e.g. context=1 at the expense of determinism (default true)
-pred <int> E..V.... Prediction method (from 0 to 2) (default left)
left E..V....
plane E..V....
median E..V....
jpeg 2000 encoder AVOptions
-format <int> E..V.... Codec Format (from 0 to 1) (default jp2)
j2k E..V....
jp2 E..V....
-tile_width <int> E..V.... Tile Width (from 1 to 1.07374e+09) (default 256)
-tile_height <int> E..V.... Tile Height (from 1 to 1.07374e+09) (default 256)
-pred <int> E..V.... DWT Type (from 0 to 1) (default dwt97int)
dwt97int E..V....
dwt53 E..V....
jpeg2000 AVOptions
-lowres <int> .D.V.... Lower the decoding resolution by a power of two (from 0 to 33) (default 0)
jpegls AVOptions
-pred <int> E..V.... Prediction method (from 0 to 2) (default left)
left E..V....
plane E..V....
median E..V....
ljpeg AVOptions
-pred <int> E..V.... Prediction method (from 1 to 3) (default left)
left E..V....
plane E..V....
median E..V....
mjpeg encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
-pred <int> E..V.... Prediction method (from 1 to 3) (default left)
left E..V....
plane E..V....
median E..V....
-huffman <int> E..V.... Huffman table strategy (from 0 to 1) (default optimal)
default E..V....
optimal E..V....
MJPEG decoder AVOptions
-extern_huff <boolean> .D.V.... Use external huffman table. (default false)
mpeg1video encoder AVOptions
-gop_timecode <string> E..V.... MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.
-intra_vlc <boolean> E..V.... Use MPEG-2 intra VLC table. (default false)
-drop_frame_timecode <boolean> E..V.... Timecode is in drop frame format. (default false)
-scan_offset <boolean> E..V.... Reserve space for SVCD scan offset user data. (default false)
-timecode_frame_start <int64> E..V.... GOP timecode frame start number, in non-drop-frame format (from -1 to I64_MAX) (default -1)
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
mpeg2video encoder AVOptions
-gop_timecode <string> E..V.... MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.
-intra_vlc <boolean> E..V.... Use MPEG-2 intra VLC table. (default false)
-drop_frame_timecode <boolean> E..V.... Timecode is in drop frame format. (default false)
-scan_offset <boolean> E..V.... Reserve space for SVCD scan offset user data. (default false)
-timecode_frame_start <int64> E..V.... GOP timecode frame start number, in non-drop-frame format (from -1 to I64_MAX) (default -1)
-non_linear_quant <boolean> E..V.... Use nonlinear quantizer. (default false)
-alternate_scan <boolean> E..V.... Enable alternate scantable. (default false)
-seq_disp_ext <int> E..V.... Write sequence_display_extension blocks. (from -1 to 1) (default auto)
auto E..V....
never E..V....
always E..V....
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
MPEG4 encoder AVOptions
-data_partitioning <boolean> E..V.... Use data partitioning. (default false)
-alternate_scan <boolean> E..V.... Enable alternate scantable. (default false)
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
MPEG4 Video Decoder AVOptions
msmpeg4v2 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
msmpeg4v3 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
PNG encoder AVOptions
-dpi <int> E..V.... Set image resolution (in dots per inch) (from 0 to 65536) (default 0)
-dpm <int> E..V.... Set image resolution (in dots per meter) (from 0 to 65536) (default 0)
-pred <int> E..V.... Prediction method (from 0 to 5) (default none)
none E..V....
sub E..V....
up E..V....
avg E..V....
paeth E..V....
mixed E..V....
ProRes encoder AVOptions
-mbs_per_slice <int> E..V.... macroblocks per slice (from 1 to 8) (default 8)
-profile <int> E..V.... (from -1 to 5) (default auto)
auto E..V....
proxy E..V....
lt E..V....
standard E..V....
hq E..V....
4444 E..V....
4444xq E..V....
-vendor <string> E..V.... vendor ID (default "Lavc")
-bits_per_mb <int> E..V.... desired bits per macroblock (from 0 to 8192) (default 0)
-quant_mat <int> E..V.... quantiser matrix (from -1 to 4) (default auto)
auto E..V....
proxy E..V....
lt E..V....
standard E..V....
hq E..V....
default E..V....
-alpha_bits <int> E..V.... bits for alpha plane (from 0 to 16) (default 16)
rawdec AVOptions
-top <boolean> .D.V.... top field first (default auto)
RoQ AVOptions
-quake3_compat <boolean> E..V.... Whether to respect known limitations in Quake 3 decoder (default true)
rv10 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
rv20 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
SMPTE 302M Decoder AVOptions
-non_pcm_mode <int> .D..A... Chooses what to do with NON-PCM (from 0 to 3) (default decode_drop)
copy .D..A... Pass NON-PCM through unchanged
drop .D..A... Drop NON-PCM
decode_copy .D..A... Decode if possible else passthrough
decode_drop .D..A... Decode if possible else drop
sgi AVOptions
-rle <int> E..V.... Use run-length compression (from 0 to 1) (default 1)
snow encoder AVOptions
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 3) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
iter E..V....
-memc_only <boolean> E..V.... Only do ME/MC (I frames -> ref, P frame -> ME+MC). (default false)
-no_bitstream <boolean> E..V.... Skip final bitstream writeout. (default false)
-intra_penalty <int> E..V.... Penalty for intra blocks in block decission (from 0 to INT_MAX) (default 0)
-iterative_dia_size <int> E..V.... Dia size for the iterative ME (from 0 to INT_MAX) (default 0)
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-pred <int> E..V.... Spatial decomposition type (from 0 to 1) (default dwt97)
dwt97 E..V....
dwt53 E..V....
sunrast AVOptions
-rle <int> E..V.... Use run-length compression (from 0 to 1) (default 1)
svq1enc AVOptions
-motion-est <int> E..V.... Motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
targa AVOptions
-rle <int> E..V.... Use run-length compression (from 0 to 1) (default 1)
TIFF encoder AVOptions
-dpi <int> E..V.... set the image resolution (in dpi) (from 1 to 65536) (default 72)
-compression_algo <int> E..V.... (from 1 to 32946) (default packbits)
packbits E..V....
raw E..V....
lzw E..V....
deflate E..V....
utvideo AVOptions
-pred <int> E..V.... Prediction method (from 0 to 3) (default left)
none E..V....
left E..V....
gradient E..V....
median E..V....
V210 Decoder AVOptions
-custom_stride <int> .D.V.... Custom V210 stride (from INT_MIN to INT_MAX) (default 0)
SMPTE VC-2 encoder AVOptions
-tolerance <double> E..V.... Max undershoot in percent (from 0 to 45) (default 5)
-slice_width <int> E..V.... Slice width (from 32 to 1024) (default 32)
-slice_height <int> E..V.... Slice height (from 8 to 1024) (default 16)
-wavelet_depth <int> E..V.... Transform depth (from 1 to 5) (default 4)
-wavelet_type <int> E..V.... Transform type (from 0 to 7) (default 9_7)
9_7 E..V.... Deslauriers-Dubuc (9,7)
5_3 E..V.... LeGall (5,3)
haar E..V.... Haar (with shift)
haar_noshift E..V.... Haar (without shift)
-qm <int> E..V.... Custom quantization matrix (from 0 to 3) (default default)
default E..V.... Default from the specifications
color E..V.... Prevents low bitrate discoloration
flat E..V.... Optimize for PSNR
wmv1 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
wmv2 encoder AVOptions
-mpv_flags <flags> E..V.... Flags common for all mpegvideo-based encoders. (default 0)
skip_rd E..V.... RD optimal MB level residual skipping
strict_gop E..V.... Strictly enforce gop size
qp_rd E..V.... Use rate distortion optimization for qp selection
cbp_rd E..V.... use rate distortion optimization for CBP
naq E..V.... normalize adaptive quantization
mv0 E..V.... always try a mb with mv=<0,0>
-luma_elim_threshold <int> E..V.... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-chroma_elim_threshold <int> E..V.... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)
-quantizer_noise_shaping <int> E..V.... (from 0 to INT_MAX) (default 0)
-error_rate <int> E..V.... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)
-qsquish <float> E..V.... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)
-rc_qmod_amp <float> E..V.... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)
-rc_qmod_freq <int> E..V.... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)
-rc_eq <string> E..V.... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-rc_init_cplx <float> E..V.... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)
-rc_buf_aggressivity <float> E..V.... currently useless (from -FLT_MAX to FLT_MAX) (default 1)
-border_mask <float> E..V.... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)
-lmin <int> E..V.... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)
-lmax <int> E..V.... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)
-ibias <int> E..V.... intra quant bias (from INT_MIN to INT_MAX) (default 999999)
-pbias <int> E..V.... inter quant bias (from INT_MIN to INT_MAX) (default 999999)
-rc_strategy <int> E..V.... ratecontrol method (from 0 to 1) (default ffmpeg)
ffmpeg E..V.... default native rate control
xvid E..V.... libxvid (2 pass only)
-motion_est <int> E..V.... motion estimation algorithm (from 0 to 2) (default epzs)
zero E..V....
epzs E..V....
xone E..V....
-force_duplicated_matrix <boolean> E..V.... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)
-b_sensitivity <int> E..V.... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)
-brd_scale <int> E..V.... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)
-skip_threshold <int> E..V.... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)
-skip_factor <int> E..V.... Frame skip factor (from INT_MIN to INT_MAX) (default 0)
-skip_exp <int> E..V.... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)
-skip_cmp <int> E..V.... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)
sad E..V.... Sum of absolute differences, fast
sse E..V.... Sum of squared errors
satd E..V.... Sum of absolute Hadamard transformed differences
dct E..V.... Sum of absolute DCT transformed differences
psnr E..V.... Sum of squared quantization errors, low quality
bit E..V.... Number of bits needed for the block
rd E..V.... Rate distortion optimal, slow
zero E..V.... Zero
vsad E..V.... Sum of absolute vertical differences
vsse E..V.... Sum of squared vertical differences
nsse E..V.... Noise preserving sum of squared differences
dct264 E..V....
dctmax E..V....
chroma E..V....
msad E..V.... Sum of absolute differences, median predicted
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default 0)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
-ps <int> E..V.... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)
-mepc <int> E..V.... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)
-mepre <int> E..V.... pre motion estimation (from INT_MIN to INT_MAX) (default 0)
AAC encoder AVOptions
-aac_coder <int> E...A... Coding algorithm (from 0 to 2) (default twoloop)
anmr E...A... ANMR method
twoloop E...A... Two loop searching method
fast E...A... Constant quantizer
-aac_ms <boolean> E...A... Force M/S stereo coding (default auto)
-aac_is <boolean> E...A... Intensity stereo coding (default true)
-aac_pns <boolean> E...A... Perceptual noise substitution (default true)
-aac_tns <boolean> E...A... Temporal noise shaping (default true)
-aac_ltp <boolean> E...A... Long term prediction (default false)
-aac_pred <boolean> E...A... AAC-Main prediction (default false)
AAC decoder AVOptions
-dual_mono_mode <int> .D..A... Select the channel to decode for dual mono (from -1 to 2) (default auto)
auto .D..A... autoselection
main .D..A... Select Main/Left channel
sub .D..A... Select Sub/Right channel
both .D..A... Select both channels
AC-3 Encoder AVOptions
-per_frame_metadata <boolean> E...A... Allow Changing Metadata Per-Frame (default false)
-center_mixlev <float> E...A... Center Mix Level (from 0 to 1) (default 0.594604)
-surround_mixlev <float> E...A... Surround Mix Level (from 0 to 1) (default 0.5)
-mixing_level <int> E...A... Mixing Level (from -1 to 111) (default -1)
-room_type <int> E...A... Room Type (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
large E...A... Large Room
small E...A... Small Room
-copyright <int> E...A... Copyright Bit (from -1 to 1) (default -1)
-dialnorm <int> E...A... Dialogue Level (dB) (from -31 to -1) (default -31)
-dsur_mode <int> E...A... Dolby Surround Mode (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Surround Encoded
off E...A... Not Dolby Surround Encoded
-original <int> E...A... Original Bit Stream (from -1 to 1) (default -1)
-dmix_mode <int> E...A... Preferred Stereo Downmix Mode (from -1 to 3) (default -1)
notindicated E...A... Not Indicated (default)
ltrt E...A... Lt/Rt Downmix Preferred
loro E...A... Lo/Ro Downmix Preferred
dplii E...A... Dolby Pro Logic II Downmix Preferred
-ltrt_cmixlev <float> E...A... Lt/Rt Center Mix Level (from -1 to 2) (default -1)
-ltrt_surmixlev <float> E...A... Lt/Rt Surround Mix Level (from -1 to 2) (default -1)
-loro_cmixlev <float> E...A... Lo/Ro Center Mix Level (from -1 to 2) (default -1)
-loro_surmixlev <float> E...A... Lo/Ro Surround Mix Level (from -1 to 2) (default -1)
-dsurex_mode <int> E...A... Dolby Surround EX Mode (from -1 to 3) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Surround EX Encoded
off E...A... Not Dolby Surround EX Encoded
dpliiz E...A... Dolby Pro Logic IIz-encoded
-dheadphone_mode <int> E...A... Dolby Headphone Mode (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Headphone Encoded
off E...A... Not Dolby Headphone Encoded
-ad_conv_type <int> E...A... A/D Converter Type (from -1 to 1) (default -1)
standard E...A... Standard (default)
hdcd E...A... HDCD
-stereo_rematrixing <boolean> E...A... Stereo Rematrixing (default true)
-channel_coupling <int> E...A... Channel Coupling (from -1 to 1) (default auto)
auto E...A... Selected by the Encoder
-cpl_start_band <int> E...A... Coupling Start Band (from -1 to 15) (default auto)
auto E...A... Selected by the Encoder
AC3 decoder AVOptions
-cons_noisegen <boolean> .D..A... enable consistent noise generation (default false)
-drc_scale <float> .D..A... percentage of dynamic range compression to apply (from 0 to 6) (default 1)
-heavy_compr <boolean> .D..A... enable heavy dynamic range compression (default false)
-target_level <int> .D..A... target level in -dBFS (0 not applied) (from -31 to 0) (default 0)
Fixed-Point AC-3 Encoder AVOptions
-per_frame_metadata <boolean> E...A... Allow Changing Metadata Per-Frame (default false)
-center_mixlev <float> E...A... Center Mix Level (from 0 to 1) (default 0.594604)
-surround_mixlev <float> E...A... Surround Mix Level (from 0 to 1) (default 0.5)
-mixing_level <int> E...A... Mixing Level (from -1 to 111) (default -1)
-room_type <int> E...A... Room Type (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
large E...A... Large Room
small E...A... Small Room
-copyright <int> E...A... Copyright Bit (from -1 to 1) (default -1)
-dialnorm <int> E...A... Dialogue Level (dB) (from -31 to -1) (default -31)
-dsur_mode <int> E...A... Dolby Surround Mode (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Surround Encoded
off E...A... Not Dolby Surround Encoded
-original <int> E...A... Original Bit Stream (from -1 to 1) (default -1)
-dmix_mode <int> E...A... Preferred Stereo Downmix Mode (from -1 to 3) (default -1)
notindicated E...A... Not Indicated (default)
ltrt E...A... Lt/Rt Downmix Preferred
loro E...A... Lo/Ro Downmix Preferred
dplii E...A... Dolby Pro Logic II Downmix Preferred
-ltrt_cmixlev <float> E...A... Lt/Rt Center Mix Level (from -1 to 2) (default -1)
-ltrt_surmixlev <float> E...A... Lt/Rt Surround Mix Level (from -1 to 2) (default -1)
-loro_cmixlev <float> E...A... Lo/Ro Center Mix Level (from -1 to 2) (default -1)
-loro_surmixlev <float> E...A... Lo/Ro Surround Mix Level (from -1 to 2) (default -1)
-dsurex_mode <int> E...A... Dolby Surround EX Mode (from -1 to 3) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Surround EX Encoded
off E...A... Not Dolby Surround EX Encoded
dpliiz E...A... Dolby Pro Logic IIz-encoded
-dheadphone_mode <int> E...A... Dolby Headphone Mode (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Headphone Encoded
off E...A... Not Dolby Headphone Encoded
-ad_conv_type <int> E...A... A/D Converter Type (from -1 to 1) (default -1)
standard E...A... Standard (default)
hdcd E...A... HDCD
-stereo_rematrixing <boolean> E...A... Stereo Rematrixing (default true)
-channel_coupling <int> E...A... Channel Coupling (from -1 to 1) (default auto)
auto E...A... Selected by the Encoder
-cpl_start_band <int> E...A... Coupling Start Band (from -1 to 15) (default auto)
auto E...A... Selected by the Encoder
Fixed-Point AC-3 Decoder AVOptions
-cons_noisegen <boolean> .D..A... enable consistent noise generation (default false)
-drc_scale <float> .D..A... percentage of dynamic range compression to apply (from 0 to 6) (default 1)
-heavy_compr <boolean> .D..A... enable heavy dynamic range compression (default false)
alacenc AVOptions
-min_prediction_order <int> E...A... (from 1 to 30) (default 4)
-max_prediction_order <int> E...A... (from 1 to 30) (default 6)
alac AVOptions
-extra_bits_bug <boolean> .D..A... Force non-standard decoding process (default false)
APE decoder AVOptions
-max_samples <int> .D..A... maximum number of samples decoded per call (from 1 to INT_MAX) (default 4608)
all .D..A... no maximum. decode all samples for each packet at once
DCA (DTS Coherent Acoustics) AVOptions
-dca_adpcm <boolean> E...A... Use ADPCM encoding (default false)
DCA decoder AVOptions
-core_only <boolean> .D..A... Decode core only without extensions (default false)
E-AC-3 Encoder AVOptions
-per_frame_metadata <boolean> E...A... Allow Changing Metadata Per-Frame (default false)
-mixing_level <int> E...A... Mixing Level (from -1 to 111) (default -1)
-room_type <int> E...A... Room Type (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
large E...A... Large Room
small E...A... Small Room
-copyright <int> E...A... Copyright Bit (from -1 to 1) (default -1)
-dialnorm <int> E...A... Dialogue Level (dB) (from -31 to -1) (default -31)
-dsur_mode <int> E...A... Dolby Surround Mode (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Surround Encoded
off E...A... Not Dolby Surround Encoded
-original <int> E...A... Original Bit Stream (from -1 to 1) (default -1)
-dmix_mode <int> E...A... Preferred Stereo Downmix Mode (from -1 to 3) (default -1)
notindicated E...A... Not Indicated (default)
ltrt E...A... Lt/Rt Downmix Preferred
loro E...A... Lo/Ro Downmix Preferred
dplii E...A... Dolby Pro Logic II Downmix Preferred
-ltrt_cmixlev <float> E...A... Lt/Rt Center Mix Level (from -1 to 2) (default -1)
-ltrt_surmixlev <float> E...A... Lt/Rt Surround Mix Level (from -1 to 2) (default -1)
-loro_cmixlev <float> E...A... Lo/Ro Center Mix Level (from -1 to 2) (default -1)
-loro_surmixlev <float> E...A... Lo/Ro Surround Mix Level (from -1 to 2) (default -1)
-dsurex_mode <int> E...A... Dolby Surround EX Mode (from -1 to 3) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Surround EX Encoded
off E...A... Not Dolby Surround EX Encoded
dpliiz E...A... Dolby Pro Logic IIz-encoded
-dheadphone_mode <int> E...A... Dolby Headphone Mode (from -1 to 2) (default -1)
notindicated E...A... Not Indicated (default)
on E...A... Dolby Headphone Encoded
off E...A... Not Dolby Headphone Encoded
-ad_conv_type <int> E...A... A/D Converter Type (from -1 to 1) (default -1)
standard E...A... Standard (default)
hdcd E...A... HDCD
-stereo_rematrixing <boolean> E...A... Stereo Rematrixing (default true)
-channel_coupling <int> E...A... Channel Coupling (from -1 to 1) (default auto)
auto E...A... Selected by the Encoder
-cpl_start_band <int> E...A... Coupling Start Band (from -1 to 15) (default auto)
auto E...A... Selected by the Encoder
E-AC3 decoder AVOptions
-cons_noisegen <boolean> .D..A... enable consistent noise generation (default false)
-drc_scale <float> .D..A... percentage of dynamic range compression to apply (from 0 to 6) (default 1)
-heavy_compr <boolean> .D..A... enable heavy dynamic range compression (default false)
-target_level <int> .D..A... target level in -dBFS (0 not applied) (from -31 to 0) (default 0)
evrc AVOptions
-postfilter <boolean> .D..A... enable postfilter (default true)
FLAC encoder AVOptions
-lpc_coeff_precision <int> E...A... LPC coefficient precision (from 0 to 15) (default 15)
-lpc_type <int> E...A... LPC algorithm (from -1 to 3) (default -1)
none E...A...
fixed E...A...
levinson E...A...
cholesky E...A...
-lpc_passes <int> E...A... Number of passes to use for Cholesky factorization during LPC analysis (from 1 to INT_MAX) (default 2)
-min_partition_order <int> E...A... (from -1 to 8) (default -1)
-max_partition_order <int> E...A... (from -1 to 8) (default -1)
-prediction_order_method <int> E...A... Search method for selecting prediction order (from -1 to 5) (default -1)
estimation E...A...
2level E...A...
4level E...A...
8level E...A...
search E...A...
log E...A...
-ch_mode <int> E...A... Stereo decorrelation mode (from -1 to 3) (default auto)
auto E...A...
indep E...A...
left_side E...A...
right_side E...A...
mid_side E...A...
-exact_rice_parameters <boolean> E...A... Calculate rice parameters exactly (default false)
-multi_dim_quant <boolean> E...A... Multi-dimensional quantization (default false)
-min_prediction_order <int> E...A... (from -1 to 32) (default -1)
-max_prediction_order <int> E...A... (from -1 to 32) (default -1)
FLAC decoder AVOptions
-use_buggy_lpc <boolean> .D..A... emulate old buggy lavc behavior (default false)
G.723.1 decoder AVOptions
-postfilter <boolean> .D..A... enable postfilter (default true)
Opus encoder AVOptions
-opus_delay <float> E...A... Maximum delay in milliseconds (from 2.5 to 360) (default 360)
TTA Decoder AVOptions
-password <string> .D..A... Set decoding password
WavPack encoder AVOptions
-joint_stereo <boolean> E...A... (default auto)
-optimize_mono <boolean> E...A... (default false)
g722 decoder AVOptions
-bits_per_codeword <int> .D..A... Bits per G722 codeword (from 6 to 8) (default 8)
g726 AVOptions
-code_size <int> E...A... Bits per code (from 2 to 5) (default 4)
g726le AVOptions
-code_size <int> E...A... Bits per code (from 2 to 5) (default 4)
Closed caption Decoder AVOptions
-real_time <boolean> .D...S.. emit subtitle events as they are decoded for real-time display (default false)
DVB Sub Decoder AVOptions
-compute_edt <boolean> .D...S.. compute end of time using pts or timeout (default false)
-compute_clut <boolean> .D...S.. compute clut when not available(-1) or always(1) or never(0) (default auto)
-dvb_substream <int> .D...S.. (from -1 to 63) (default -1)
VOBSUB subtitle encoder AVOptions
-even_rows_fix <boolean> E....S.. Make number of rows even (workaround for some players) (default false)
dvdsubdec AVOptions
-palette <string> .D...S.. set the global palette
-ifo_palette <string> .D...S.. obtain the global palette from .IFO file
-forced_subs_only <boolean> .D...S.. Only show forced subtitles (default false)
PGS subtitle decoder AVOptions
-forced_subs_only <boolean> .D...S.. Only show forced subtitles (default false)
pjs decoder AVOptions
-keep_ass_markup <boolean> .D...S.. Set if ASS tags must be escaped (default false)
stl decoder AVOptions
-keep_ass_markup <boolean> .D...S.. Set if ASS tags must be escaped (default false)
subviewer1 decoder AVOptions
-keep_ass_markup <boolean> .D...S.. Set if ASS tags must be escaped (default false)
text decoder AVOptions
-keep_ass_markup <boolean> .D...S.. Set if ASS tags must be escaped (default false)
vplayer decoder AVOptions
-keep_ass_markup <boolean> .D...S.. Set if ASS tags must be escaped (default false)
at_aac_enc AVOptions
-aac_at_mode <int> E...A... ratecontrol mode (from -1 to 3) (default auto)
auto E...A... VBR if global quality is given; CBR otherwise
cbr E...A... constant bitrate
abr E...A... long-term average bitrate
cvbr E...A... constrained variable bitrate
vbr E...A... variable bitrate
-aac_at_quality <int> E...A... quality vs speed control (from 0 to 2) (default 0)
at_alac_enc AVOptions
-aac_at_mode <int> E...A... ratecontrol mode (from -1 to 3) (default auto)
auto E...A... VBR if global quality is given; CBR otherwise
cbr E...A... constant bitrate
abr E...A... long-term average bitrate
cvbr E...A... constrained variable bitrate
vbr E...A... variable bitrate
-aac_at_quality <int> E...A... quality vs speed control (from 0 to 2) (default 0)
at_ilbc_enc AVOptions
-aac_at_mode <int> E...A... ratecontrol mode (from -1 to 3) (default auto)
auto E...A... VBR if global quality is given; CBR otherwise
cbr E...A... constant bitrate
abr E...A... long-term average bitrate
cvbr E...A... constrained variable bitrate
vbr E...A... variable bitrate
-aac_at_quality <int> E...A... quality vs speed control (from 0 to 2) (default 0)
at_pcm_alaw_enc AVOptions
-aac_at_mode <int> E...A... ratecontrol mode (from -1 to 3) (default auto)
auto E...A... VBR if global quality is given; CBR otherwise
cbr E...A... constant bitrate
abr E...A... long-term average bitrate
cvbr E...A... constrained variable bitrate
vbr E...A... variable bitrate
-aac_at_quality <int> E...A... quality vs speed control (from 0 to 2) (default 0)
at_pcm_mulaw_enc AVOptions
-aac_at_mode <int> E...A... ratecontrol mode (from -1 to 3) (default auto)
auto E...A... VBR if global quality is given; CBR otherwise
cbr E...A... constant bitrate
abr E...A... long-term average bitrate
cvbr E...A... constrained variable bitrate
vbr E...A... variable bitrate
-aac_at_quality <int> E...A... quality vs speed control (from 0 to 2) (default 0)
libmp3lame encoder AVOptions
-reservoir <boolean> E...A... use bit reservoir (default true)
-joint_stereo <boolean> E...A... use joint stereo (default true)
-abr <boolean> E...A... use ABR (default false)
libx264 AVOptions
-preset <string> E..V.... Set the encoding preset (cf. x264 --fullhelp) (default "medium")
-tune <string> E..V.... Tune the encoding params (cf. x264 --fullhelp)
-profile <string> E..V.... Set profile restrictions (cf. x264 --fullhelp)
-fastfirstpass <boolean> E..V.... Use fast settings when encoding first pass (default true)
-level <string> E..V.... Specify level (as defined by Annex A)
-passlogfile <string> E..V.... Filename for 2 pass stats
-wpredp <string> E..V.... Weighted prediction for P-frames
-a53cc <boolean> E..V.... Use A53 Closed Captions (if available) (default true)
-x264opts <string> E..V.... x264 options
-crf <float> E..V.... Select the quality for constant quality mode (from -1 to FLT_MAX) (default -1)
-crf_max <float> E..V.... In CRF mode, prevents VBV from lowering quality beyond this point. (from -1 to FLT_MAX) (default -1)
-qp <int> E..V.... Constant quantization parameter rate control method (from -1 to INT_MAX) (default -1)
-aq-mode <int> E..V.... AQ method (from -1 to INT_MAX) (default -1)
none E..V....
variance E..V.... Variance AQ (complexity mask)
autovariance E..V.... Auto-variance AQ
autovariance-biased E..V.... Auto-variance AQ with bias to dark scenes
-aq-strength <float> E..V.... AQ strength. Reduces blocking and blurring in flat and textured areas. (from -1 to FLT_MAX) (default -1)
-psy <boolean> E..V.... Use psychovisual optimizations. (default auto)
-psy-rd <string> E..V.... Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
-rc-lookahead <int> E..V.... Number of frames to look ahead for frametype and ratecontrol (from -1 to INT_MAX) (default -1)
-weightb <boolean> E..V.... Weighted prediction for B-frames. (default auto)
-weightp <int> E..V.... Weighted prediction analysis method. (from -1 to INT_MAX) (default -1)
none E..V....
simple E..V....
smart E..V....
-ssim <boolean> E..V.... Calculate and print SSIM stats. (default auto)
-intra-refresh <boolean> E..V.... Use Periodic Intra Refresh instead of IDR frames. (default auto)
-bluray-compat <boolean> E..V.... Bluray compatibility workarounds. (default auto)
-b-bias <int> E..V.... Influences how often B-frames are used (from INT_MIN to INT_MAX) (default INT_MIN)
-b-pyramid <int> E..V.... Keep some B-frames as references. (from -1 to INT_MAX) (default -1)
none E..V....
strict E..V.... Strictly hierarchical pyramid
normal E..V.... Non-strict (not Blu-ray compatible)
-mixed-refs <boolean> E..V.... One reference per partition, as opposed to one reference per macroblock (default auto)
-8x8dct <boolean> E..V.... High profile 8x8 transform. (default auto)
-fast-pskip <boolean> E..V.... (default auto)
-aud <boolean> E..V.... Use access unit delimiters. (default auto)
-mbtree <boolean> E..V.... Use macroblock tree ratecontrol. (default auto)
-deblock <string> E..V.... Loop filter parameters, in <alpha:beta> form.
-cplxblur <float> E..V.... Reduce fluctuations in QP (before curve compression) (from -1 to FLT_MAX) (default -1)
-partitions <string> E..V.... A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all
-direct-pred <int> E..V.... Direct MV prediction mode (from -1 to INT_MAX) (default -1)
none E..V....
spatial E..V....
temporal E..V....
auto E..V....
-slice-max-size <int> E..V.... Limit the size of each slice in bytes (from -1 to INT_MAX) (default -1)
-stats <string> E..V.... Filename for 2 pass stats
-nal-hrd <int> E..V.... Signal HRD information (requires vbv-bufsize; cbr not allowed in .mp4) (from -1 to INT_MAX) (default -1)
none E..V....
vbr E..V....
cbr E..V....
-avcintra-class <int> E..V.... AVC-Intra class 50/100/200 (from -1 to 200) (default -1)
-motion-est <int> E..V.... Set motion estimation method (from -1 to 4) (default -1)
dia E..V....
hex E..V....
umh E..V....
esa E..V....
tesa E..V....
-forced-idr <boolean> E..V.... If forcing keyframes, force them as IDR frames. (default false)
-coder <int> E..V.... Coder type (from -1 to 1) (default default)
default E..V....
cavlc E..V....
cabac E..V....
vlc E..V....
ac E..V....
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from -1 to 2) (default -1)
-chromaoffset <int> E..V.... QP difference between chroma and luma (from INT_MIN to INT_MAX) (default -1)
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default -1)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default -1)
-x264-params <string> E..V.... Override the x264 configuration using a :-separated list of key=value parameters
libx264rgb AVOptions
-preset <string> E..V.... Set the encoding preset (cf. x264 --fullhelp) (default "medium")
-tune <string> E..V.... Tune the encoding params (cf. x264 --fullhelp)
-profile <string> E..V.... Set profile restrictions (cf. x264 --fullhelp)
-fastfirstpass <boolean> E..V.... Use fast settings when encoding first pass (default true)
-level <string> E..V.... Specify level (as defined by Annex A)
-passlogfile <string> E..V.... Filename for 2 pass stats
-wpredp <string> E..V.... Weighted prediction for P-frames
-a53cc <boolean> E..V.... Use A53 Closed Captions (if available) (default true)
-x264opts <string> E..V.... x264 options
-crf <float> E..V.... Select the quality for constant quality mode (from -1 to FLT_MAX) (default -1)
-crf_max <float> E..V.... In CRF mode, prevents VBV from lowering quality beyond this point. (from -1 to FLT_MAX) (default -1)
-qp <int> E..V.... Constant quantization parameter rate control method (from -1 to INT_MAX) (default -1)
-aq-mode <int> E..V.... AQ method (from -1 to INT_MAX) (default -1)
none E..V....
variance E..V.... Variance AQ (complexity mask)
autovariance E..V.... Auto-variance AQ
autovariance-biased E..V.... Auto-variance AQ with bias to dark scenes
-aq-strength <float> E..V.... AQ strength. Reduces blocking and blurring in flat and textured areas. (from -1 to FLT_MAX) (default -1)
-psy <boolean> E..V.... Use psychovisual optimizations. (default auto)
-psy-rd <string> E..V.... Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
-rc-lookahead <int> E..V.... Number of frames to look ahead for frametype and ratecontrol (from -1 to INT_MAX) (default -1)
-weightb <boolean> E..V.... Weighted prediction for B-frames. (default auto)
-weightp <int> E..V.... Weighted prediction analysis method. (from -1 to INT_MAX) (default -1)
none E..V....
simple E..V....
smart E..V....
-ssim <boolean> E..V.... Calculate and print SSIM stats. (default auto)
-intra-refresh <boolean> E..V.... Use Periodic Intra Refresh instead of IDR frames. (default auto)
-bluray-compat <boolean> E..V.... Bluray compatibility workarounds. (default auto)
-b-bias <int> E..V.... Influences how often B-frames are used (from INT_MIN to INT_MAX) (default INT_MIN)
-b-pyramid <int> E..V.... Keep some B-frames as references. (from -1 to INT_MAX) (default -1)
none E..V....
strict E..V.... Strictly hierarchical pyramid
normal E..V.... Non-strict (not Blu-ray compatible)
-mixed-refs <boolean> E..V.... One reference per partition, as opposed to one reference per macroblock (default auto)
-8x8dct <boolean> E..V.... High profile 8x8 transform. (default auto)
-fast-pskip <boolean> E..V.... (default auto)
-aud <boolean> E..V.... Use access unit delimiters. (default auto)
-mbtree <boolean> E..V.... Use macroblock tree ratecontrol. (default auto)
-deblock <string> E..V.... Loop filter parameters, in <alpha:beta> form.
-cplxblur <float> E..V.... Reduce fluctuations in QP (before curve compression) (from -1 to FLT_MAX) (default -1)
-partitions <string> E..V.... A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all
-direct-pred <int> E..V.... Direct MV prediction mode (from -1 to INT_MAX) (default -1)
none E..V....
spatial E..V....
temporal E..V....
auto E..V....
-slice-max-size <int> E..V.... Limit the size of each slice in bytes (from -1 to INT_MAX) (default -1)
-stats <string> E..V.... Filename for 2 pass stats
-nal-hrd <int> E..V.... Signal HRD information (requires vbv-bufsize; cbr not allowed in .mp4) (from -1 to INT_MAX) (default -1)
none E..V....
vbr E..V....
cbr E..V....
-avcintra-class <int> E..V.... AVC-Intra class 50/100/200 (from -1 to 200) (default -1)
-motion-est <int> E..V.... Set motion estimation method (from -1 to 4) (default -1)
dia E..V....
hex E..V....
umh E..V....
esa E..V....
tesa E..V....
-forced-idr <boolean> E..V.... If forcing keyframes, force them as IDR frames. (default false)
-coder <int> E..V.... Coder type (from -1 to 1) (default default)
default E..V....
cavlc E..V....
cabac E..V....
vlc E..V....
ac E..V....
-b_strategy <int> E..V.... Strategy to choose between I/P/B-frames (from -1 to 2) (default -1)
-chromaoffset <int> E..V.... QP difference between chroma and luma (from INT_MIN to INT_MAX) (default -1)
-sc_threshold <int> E..V.... Scene change threshold (from INT_MIN to INT_MAX) (default -1)
-noise_reduction <int> E..V.... Noise reduction (from INT_MIN to INT_MAX) (default -1)
-x264-params <string> E..V.... Override the x264 configuration using a :-separated list of key=value parameters
libxvid AVOptions
-lumi_aq <int> E..V.... Luminance masking AQ (from 0 to 1) (default 0)
-variance_aq <int> E..V.... Variance AQ (from 0 to 1) (default 0)
-ssim <int> E..V.... Show SSIM information to stdout (from 0 to 2) (default off)
off E..V....
avg E..V....
frame E..V....
-ssim_acc <int> E..V.... SSIM accuracy (from 0 to 4) (default 2)
-gmc <int> E..V.... use GMC (from 0 to 1) (default 0)
-me_quality <int> E..V.... Motion estimation quality (from 0 to 6) (default 0)
-mpeg_quant <int> E..V.... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)
h264_videotoolbox AVOptions
-profile <int> E..V.... Profile (from 0 to 4) (default 0)
baseline E..V.... Baseline Profile
main E..V.... Main Profile
high E..V.... High Profile
-level <int> E..V.... Level (from 0 to 52) (default 0)
1.3 E..V.... Level 1.3, only available with Baseline Profile
3.0 E..V.... Level 3.0
3.1 E..V.... Level 3.1
3.2 E..V.... Level 3.2
4.0 E..V.... Level 4.0
4.1 E..V.... Level 4.1
4.2 E..V.... Level 4.2
5.0 E..V.... Level 5.0
5.1 E..V.... Level 5.1
5.2 E..V.... Level 5.2
-allow_sw <boolean> E..V.... Allow software encoding (default false)
-coder <int> E..V.... Entropy coding (from 0 to 2) (default 0)
cavlc E..V.... CAVLC entropy coding
vlc E..V.... CAVLC entropy coding
cabac E..V.... CABAC entropy coding
ac E..V.... CABAC entropy coding
-realtime <boolean> E..V.... Hint that encoding should happen in real-time if not faster (e.g. capturing from camera). (default false)
-frames_before <boolean> E..V.... Other frames will come before the frames in this session. This helps smooth concatenation issues. (default false)
-frames_after <boolean> E..V.... Other frames will come after the frames in this session. This helps smooth concatenation issues. (default false)
-a53cc <boolean> E..V.... Use A53 Closed Captions (if available) (default true)
AVFormatContext AVOptions
-avioflags <flags> ED...... (default 0)
direct ED...... reduce buffering
-probesize <int64> .D...... set probing size (from 32 to I64_MAX) (default 5e+06)
-formatprobesize <int> .D...... number of bytes to probe file format (from 0 to 2.14748e+09) (default 1.04858e+06)
-packetsize <int> E....... set packet size (from 0 to INT_MAX) (default 0)
-fflags <flags> ED...... (default autobsf)
flush_packets E....... reduce the latency by flushing out packets immediately
ignidx .D...... ignore index
genpts .D...... generate pts
nofillin .D...... do not fill in missing values that can be exactly calculated
noparse .D...... disable AVParsers, this needs nofillin too
igndts .D...... ignore dts
discardcorrupt .D...... discard corrupted frames
sortdts .D...... try to interleave outputted packets by dts
keepside .D...... don't merge side data
fastseek .D...... fast but inaccurate seeks
latm E....... enable RTP MP4A-LATM payload
nobuffer .D...... reduce the latency introduced by optional buffering
bitexact E....... do not write random/volatile data
shortest E....... stop muxing with the shortest stream
autobsf E....... add needed bsfs automatically (delays header until each stream's first packet is written)
-seek2any <boolean> .D...... allow seeking to non-keyframes on demuxer level when supported (default false)
-analyzeduration <int64> .D...... specify how many microseconds are analyzed to probe the input (from 0 to I64_MAX) (default 0)
-cryptokey <binary> .D...... decryption key
-indexmem <int> .D...... max memory used for timestamp index (per stream) (from 0 to INT_MAX) (default 1.04858e+06)
-rtbufsize <int> .D...... max memory used for buffering real-time frames (from 0 to INT_MAX) (default 3.04128e+06)
-fdebug <flags> ED...... print specific debug info (default 0)
ts ED......
-max_delay <int> ED...... maximum muxing or demuxing delay in microseconds (from -1 to INT_MAX) (default -1)
-start_time_realtime <int64> E....... wall-clock time when stream begins (PTS==0) (from I64_MIN to I64_MAX) (default I64_MIN)
-fpsprobesize <int> .D...... number of frames used to probe fps (from -1 to 2.14748e+09) (default -1)
-audio_preload <int> E....... microseconds by which audio packets should be interleaved earlier (from 0 to 2.14748e+09) (default 0)
-chunk_duration <int> E....... microseconds for each chunk (from 0 to 2.14748e+09) (default 0)
-chunk_size <int> E....... size in bytes for each chunk (from 0 to 2.14748e+09) (default 0)
-f_err_detect <flags> .D...... set error detection flags (deprecated; use err_detect, save via avconv) (default crccheck)
crccheck .D...... verify embedded CRCs
bitstream .D...... detect bitstream specification deviations
buffer .D...... detect improper bitstream length
explode .D...... abort decoding on minor error detection
ignore_err .D...... ignore errors
careful .D...... consider things that violate the spec, are fast to check and have not been seen in the wild as errors
compliant .D...... consider all spec non compliancies as errors
aggressive .D...... consider things that a sane encoder shouldn't do as an error
-err_detect <flags> .D...... set error detection flags (default crccheck)
crccheck .D...... verify embedded CRCs
bitstream .D...... detect bitstream specification deviations
buffer .D...... detect improper bitstream length
explode .D...... abort decoding on minor error detection
ignore_err .D...... ignore errors
careful .D...... consider things that violate the spec, are fast to check and have not been seen in the wild as errors
compliant .D...... consider all spec non compliancies as errors
aggressive .D...... consider things that a sane encoder shouldn't do as an error
-use_wallclock_as_timestamps <boolean> .D...... use wallclock as timestamps (default false)
-skip_initial_bytes <int64> .D...... set number of bytes to skip before reading header and frames (from 0 to I64_MAX) (default 0)
-correct_ts_overflow <boolean> .D...... correct single timestamp overflows (default true)
-flush_packets <int> E....... enable flushing of the I/O context after each packet (from -1 to 1) (default -1)
-metadata_header_padding <int> E....... set number of bytes to be written as padding in a metadata header (from -1 to INT_MAX) (default -1)
-output_ts_offset <duration> E....... set output timestamp offset (default 0)
-max_interleave_delta <int64> E....... maximum buffering duration for interleaving (from 0 to I64_MAX) (default 1e+07)
-f_strict <int> ED...... how strictly to follow the standards (deprecated; use strict, save via avconv) (from INT_MIN to INT_MAX) (default normal)
very ED...... strictly conform to a older more strict version of the spec or reference software
strict ED...... strictly conform to all the things in the spec no matter what the consequences
normal ED......
unofficial ED...... allow unofficial extensions
experimental ED...... allow non-standardized experimental variants
-strict <int> ED...... how strictly to follow the standards (from INT_MIN to INT_MAX) (default normal)
very ED...... strictly conform to a older more strict version of the spec or reference software
strict ED...... strictly conform to all the things in the spec no matter what the consequences
normal ED......
unofficial ED...... allow unofficial extensions
experimental ED...... allow non-standardized experimental variants
-max_ts_probe <int> .D...... maximum number of packets to read while waiting for the first timestamp (from 0 to INT_MAX) (default 50)
-avoid_negative_ts <int> E....... shift timestamps so they start at 0 (from -1 to 2) (default auto)
auto E....... enabled when required by target format
disabled E....... do not change timestamps
make_non_negative E....... shift timestamps so they are non negative
make_zero E....... shift timestamps so they start at 0
-dump_separator <string> ED...... set information dump field separator (default ", ")
-codec_whitelist <string> .D...... List of decoders that are allowed to be used
-format_whitelist <string> .D...... List of demuxers that are allowed to be used
-protocol_whitelist <string> .D...... List of protocols that are allowed to be used
-protocol_blacklist <string> .D...... List of protocols that are not allowed to be used
-max_streams <int> .D...... maximum number of streams (from 0 to INT_MAX) (default 1000)
AVIOContext AVOptions
-protocol_whitelist <string> .D...... List of protocols that are allowed to be used
URLContext AVOptions
-protocol_whitelist <string> .D...... List of protocols that are allowed to be used
-protocol_blacklist <string> .D...... List of protocols that are not allowed to be used
-rw_timeout <int64> ED...... Timeout for IO operations (in microseconds) (from 0 to I64_MAX) (default 0)
Async AVOptions
Cache AVOptions
-read_ahead_limit <int> .D...... Amount in bytes that may be read ahead when seeking isn't supported, -1 for unlimited (from -1 to INT_MAX) (default 65536)
crypto AVOptions
-key <binary> ED...... AES encryption/decryption key
-iv <binary> ED...... AES encryption/decryption initialization vector
-decryption_key <binary> .D...... AES decryption key
-decryption_iv <binary> .D...... AES decryption initialization vector
-encryption_key <binary> E....... AES encryption key
-encryption_iv <binary> E....... AES encryption initialization vector
ffrtmphttp AVOptions
-ffrtmphttp_tls <boolean> .D...... Use a HTTPS tunneling connection (RTMPTS). (default false)
file AVOptions
-truncate <boolean> E....... truncate existing files on write (default true)
-blocksize <int> E....... set I/O operation maximum block size (from 1 to INT_MAX) (default INT_MAX)
-follow <int> .D...... Follow a file as it is being written (from 0 to 1) (default 0)
ftp AVOptions
-timeout <int> ED...... set timeout of socket I/O operations (from -1 to INT_MAX) (default -1)
-ftp-write-seekable <boolean> E....... control seekability of connection during encoding (default false)
-ftp-anonymous-password <string> ED...... password for anonymous login. E-mail address should be used.
http AVOptions
-seekable <boolean> .D...... control seekability of connection (default auto)
-chunked_post <boolean> E....... use chunked transfer-encoding for posts (default true)
-http_proxy <string> ED...... set HTTP proxy to tunnel through
-headers <string> ED...... set custom HTTP headers, can override built in default headers
-content_type <string> ED...... set a specific content type for the POST messages
-user_agent <string> .D...... override User-Agent header (default "Lavf/57.83.100")
-user-agent <string> .D...... override User-Agent header (default "Lavf/57.83.100")
-multiple_requests <boolean> ED...... use persistent connections (default false)
-post_data <binary> ED...... set custom HTTP post data
-cookies <string> .D...... set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax
-icy <boolean> .D...... request ICY metadata (default true)
-auth_type <int> ED...... HTTP authentication type (from 0 to 1) (default none)
none ED...... No auth method set, autodetect
basic ED...... HTTP basic authentication
-send_expect_100 <boolean> E....... Force sending an Expect: 100-continue header for POST (default false)
-location <string> ED...... The actual location of the data received
-offset <int64> .D...... initial byte offset (from 0 to I64_MAX) (default 0)
-end_offset <int64> .D...... try to limit the request to bytes preceding this offset (from 0 to I64_MAX) (default 0)
-method <string> ED...... Override the HTTP method or set the expected HTTP method from a client
-reconnect <boolean> .D...... auto reconnect after disconnect before EOF (default false)
-reconnect_at_eof <boolean> .D...... auto reconnect at EOF (default false)
-reconnect_streamed <boolean> .D...... auto reconnect streamed / non seekable streams (default false)
-reconnect_delay_max <int> .D...... max reconnect delay in seconds after which to give up (from 0 to 4294) (default 120)
-listen <int> ED...... listen on HTTP (from 0 to 2) (default 0)
-resource <string> E....... The resource requested by a client
-reply_code <int> E....... The http status code to return to a client (from INT_MIN to 599) (default 200)
https AVOptions
-seekable <boolean> .D...... control seekability of connection (default auto)
-chunked_post <boolean> E....... use chunked transfer-encoding for posts (default true)
-http_proxy <string> ED...... set HTTP proxy to tunnel through
-headers <string> ED...... set custom HTTP headers, can override built in default headers
-content_type <string> ED...... set a specific content type for the POST messages
-user_agent <string> .D...... override User-Agent header (default "Lavf/57.83.100")
-user-agent <string> .D...... override User-Agent header (default "Lavf/57.83.100")
-multiple_requests <boolean> ED...... use persistent connections (default false)
-post_data <binary> ED...... set custom HTTP post data
-cookies <string> .D...... set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax
-icy <boolean> .D...... request ICY metadata (default true)
-auth_type <int> ED...... HTTP authentication type (from 0 to 1) (default none)
none ED...... No auth method set, autodetect
basic ED...... HTTP basic authentication
-send_expect_100 <boolean> E....... Force sending an Expect: 100-continue header for POST (default false)
-location <string> ED...... The actual location of the data received
-offset <int64> .D...... initial byte offset (from 0 to I64_MAX) (default 0)
-end_offset <int64> .D...... try to limit the request to bytes preceding this offset (from 0 to I64_MAX) (default 0)
-method <string> ED...... Override the HTTP method or set the expected HTTP method from a client
-reconnect <boolean> .D...... auto reconnect after disconnect before EOF (default false)
-reconnect_at_eof <boolean> .D...... auto reconnect at EOF (default false)
-reconnect_streamed <boolean> .D...... auto reconnect streamed / non seekable streams (default false)
-reconnect_delay_max <int> .D...... max reconnect delay in seconds after which to give up (from 0 to 4294) (default 120)
-listen <int> ED...... listen on HTTP (from 0 to 2) (default 0)
-resource <string> E....... The resource requested by a client
-reply_code <int> E....... The http status code to return to a client (from INT_MIN to 599) (default 200)
icecast AVOptions
-ice_genre <string> E....... set stream genre
-ice_name <string> E....... set stream description
-ice_description <string> E....... set stream description
-ice_url <string> E....... set stream website
-ice_public <boolean> E....... set if stream is public (default false)
-user_agent <string> E....... override User-Agent header
-password <string> E....... set password
-content_type <string> E....... set content-type, MUST be set if not audio/mpeg
-legacy_icecast <boolean> E....... use legacy SOURCE method, for Icecast < v2.4 (default false)
pipe AVOptions
-blocksize <int> E....... set I/O operation maximum block size (from 1 to INT_MAX) (default INT_MAX)
prompeg AVOptions
-ttl <int> E....... Time to live (in milliseconds, multicast only) (from -1 to INT_MAX) (default -1)
-l <int> E....... FEC L (from 4 to 20) (default 5)
-d <int> E....... FEC D (from 4 to 20) (default 5)
rtmp AVOptions
-rtmp_app <string> ED...... Name of application to connect to on the RTMP server
-rtmp_buffer <int> ED...... Set buffer time in milliseconds. The default is 3000. (from 0 to INT_MAX) (default 3000)
-rtmp_conn <string> ED...... Append arbitrary AMF data to the Connect message
-rtmp_flashver <string> ED...... Version of the Flash plugin used to run the SWF player.
-rtmp_flush_interval <int> E....... Number of packets flushed in the same request (RTMPT only). (from 0 to INT_MAX) (default 10)
-rtmp_live <int> .D...... Specify that the media is a live stream. (from INT_MIN to INT_MAX) (default any)
any .D...... both
live .D...... live stream
recorded .D...... recorded stream
-rtmp_pageurl <string> .D...... URL of the web page in which the media was embedded. By default no value will be sent.
-rtmp_playpath <string> ED...... Stream identifier to play or to publish
-rtmp_subscribe <string> .D...... Name of live stream to subscribe to. Defaults to rtmp_playpath.
-rtmp_swfhash <binary> .D...... SHA256 hash of the decompressed SWF file (32 bytes).
-rtmp_swfsize <int> .D...... Size of the decompressed SWF file, required for SWFVerification. (from 0 to INT_MAX) (default 0)
-rtmp_swfurl <string> ED...... URL of the SWF player. By default no value will be sent
-rtmp_swfverify <string> .D...... URL to player swf file, compute hash/size automatically.
-rtmp_tcurl <string> ED...... URL of the target stream. Defaults to proto://host[:port]/app.
-rtmp_listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-timeout <int> .D...... Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1 (from INT_MIN to INT_MAX) (default -1)
rtmps AVOptions
-rtmp_app <string> ED...... Name of application to connect to on the RTMP server
-rtmp_buffer <int> ED...... Set buffer time in milliseconds. The default is 3000. (from 0 to INT_MAX) (default 3000)
-rtmp_conn <string> ED...... Append arbitrary AMF data to the Connect message
-rtmp_flashver <string> ED...... Version of the Flash plugin used to run the SWF player.
-rtmp_flush_interval <int> E....... Number of packets flushed in the same request (RTMPT only). (from 0 to INT_MAX) (default 10)
-rtmp_live <int> .D...... Specify that the media is a live stream. (from INT_MIN to INT_MAX) (default any)
any .D...... both
live .D...... live stream
recorded .D...... recorded stream
-rtmp_pageurl <string> .D...... URL of the web page in which the media was embedded. By default no value will be sent.
-rtmp_playpath <string> ED...... Stream identifier to play or to publish
-rtmp_subscribe <string> .D...... Name of live stream to subscribe to. Defaults to rtmp_playpath.
-rtmp_swfhash <binary> .D...... SHA256 hash of the decompressed SWF file (32 bytes).
-rtmp_swfsize <int> .D...... Size of the decompressed SWF file, required for SWFVerification. (from 0 to INT_MAX) (default 0)
-rtmp_swfurl <string> ED...... URL of the SWF player. By default no value will be sent
-rtmp_swfverify <string> .D...... URL to player swf file, compute hash/size automatically.
-rtmp_tcurl <string> ED...... URL of the target stream. Defaults to proto://host[:port]/app.
-rtmp_listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-timeout <int> .D...... Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1 (from INT_MIN to INT_MAX) (default -1)
rtmpt AVOptions
-rtmp_app <string> ED...... Name of application to connect to on the RTMP server
-rtmp_buffer <int> ED...... Set buffer time in milliseconds. The default is 3000. (from 0 to INT_MAX) (default 3000)
-rtmp_conn <string> ED...... Append arbitrary AMF data to the Connect message
-rtmp_flashver <string> ED...... Version of the Flash plugin used to run the SWF player.
-rtmp_flush_interval <int> E....... Number of packets flushed in the same request (RTMPT only). (from 0 to INT_MAX) (default 10)
-rtmp_live <int> .D...... Specify that the media is a live stream. (from INT_MIN to INT_MAX) (default any)
any .D...... both
live .D...... live stream
recorded .D...... recorded stream
-rtmp_pageurl <string> .D...... URL of the web page in which the media was embedded. By default no value will be sent.
-rtmp_playpath <string> ED...... Stream identifier to play or to publish
-rtmp_subscribe <string> .D...... Name of live stream to subscribe to. Defaults to rtmp_playpath.
-rtmp_swfhash <binary> .D...... SHA256 hash of the decompressed SWF file (32 bytes).
-rtmp_swfsize <int> .D...... Size of the decompressed SWF file, required for SWFVerification. (from 0 to INT_MAX) (default 0)
-rtmp_swfurl <string> ED...... URL of the SWF player. By default no value will be sent
-rtmp_swfverify <string> .D...... URL to player swf file, compute hash/size automatically.
-rtmp_tcurl <string> ED...... URL of the target stream. Defaults to proto://host[:port]/app.
-rtmp_listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-timeout <int> .D...... Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1 (from INT_MIN to INT_MAX) (default -1)
rtmpts AVOptions
-rtmp_app <string> ED...... Name of application to connect to on the RTMP server
-rtmp_buffer <int> ED...... Set buffer time in milliseconds. The default is 3000. (from 0 to INT_MAX) (default 3000)
-rtmp_conn <string> ED...... Append arbitrary AMF data to the Connect message
-rtmp_flashver <string> ED...... Version of the Flash plugin used to run the SWF player.
-rtmp_flush_interval <int> E....... Number of packets flushed in the same request (RTMPT only). (from 0 to INT_MAX) (default 10)
-rtmp_live <int> .D...... Specify that the media is a live stream. (from INT_MIN to INT_MAX) (default any)
any .D...... both
live .D...... live stream
recorded .D...... recorded stream
-rtmp_pageurl <string> .D...... URL of the web page in which the media was embedded. By default no value will be sent.
-rtmp_playpath <string> ED...... Stream identifier to play or to publish
-rtmp_subscribe <string> .D...... Name of live stream to subscribe to. Defaults to rtmp_playpath.
-rtmp_swfhash <binary> .D...... SHA256 hash of the decompressed SWF file (32 bytes).
-rtmp_swfsize <int> .D...... Size of the decompressed SWF file, required for SWFVerification. (from 0 to INT_MAX) (default 0)
-rtmp_swfurl <string> ED...... URL of the SWF player. By default no value will be sent
-rtmp_swfverify <string> .D...... URL to player swf file, compute hash/size automatically.
-rtmp_tcurl <string> ED...... URL of the target stream. Defaults to proto://host[:port]/app.
-rtmp_listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-listen <int> .D...... Listen for incoming rtmp connections (from INT_MIN to INT_MAX) (default 0)
-timeout <int> .D...... Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1 (from INT_MIN to INT_MAX) (default -1)
rtp AVOptions
-ttl <int> ED...... Time to live (in milliseconds, multicast only) (from -1 to INT_MAX) (default -1)
-buffer_size <int> ED...... Send/Receive buffer size (in bytes) (from -1 to INT_MAX) (default -1)
-rtcp_port <int> ED...... Custom rtcp port (from -1 to INT_MAX) (default -1)
-local_rtpport <int> ED...... Local rtp port (from -1 to INT_MAX) (default -1)
-local_rtcpport <int> ED...... Local rtcp port (from -1 to INT_MAX) (default -1)
-connect <boolean> ED...... Connect socket (default false)
-write_to_source <boolean> ED...... Send packets to the source address of the latest received packet (default false)
-pkt_size <int> ED...... Maximum packet size (from -1 to INT_MAX) (default -1)
-dscp <int> ED...... DSCP class (from -1 to INT_MAX) (default -1)
-sources <string> ED...... Source list
-block <string> ED...... Block list
-fec <string> E....... FEC
srtp AVOptions
-srtp_out_suite <string> E.......
-srtp_out_params <string> E.......
-srtp_in_suite <string> .D......
-srtp_in_params <string> .D......
subfile AVOptions
-start <int64> .D...... start offset (from 0 to I64_MAX) (default 0)
-end <int64> .D...... end offset (from 0 to I64_MAX) (default 0)
tee AVOptions
tcp AVOptions
-listen <int> ED...... Listen for incoming connections (from 0 to 2) (default 0)
-timeout <int> ED...... set timeout (in microseconds) of socket I/O operations (from -1 to INT_MAX) (default -1)
-listen_timeout <int> ED...... Connection awaiting timeout (in milliseconds) (from -1 to INT_MAX) (default -1)
-send_buffer_size <int> ED...... Socket send buffer size (in bytes) (from -1 to INT_MAX) (default -1)
-recv_buffer_size <int> ED...... Socket receive buffer size (in bytes) (from -1 to INT_MAX) (default -1)
tls AVOptions
-ca_file <string> ED...... Certificate Authority database file
-cafile <string> ED...... Certificate Authority database file
-tls_verify <int> ED...... Verify the peer certificate (from 0 to 1) (default 0)
-cert_file <string> ED...... Certificate file
-key_file <string> ED...... Private key file
-listen <int> ED...... Listen for incoming connections (from 0 to 1) (default 0)
-verifyhost <string> ED...... Verify against a specific hostname
udp AVOptions
-buffer_size <int> ED...... System data size (in bytes) (from -1 to INT_MAX) (default -1)
-bitrate <int64> E....... Bits to send per second (from 0 to I64_MAX) (default 0)
-burst_bits <int64> E....... Max length of bursts in bits (when using bitrate) (from 0 to I64_MAX) (default 0)
-localport <int> ED...... Local port (from -1 to INT_MAX) (default -1)
-local_port <int> ED...... Local port (from -1 to INT_MAX) (default -1)
-localaddr <string> ED...... Local address
-udplite_coverage <int> ED...... choose UDPLite head size which should be validated by checksum (from 0 to INT_MAX) (default 0)
-pkt_size <int> ED...... Maximum UDP packet size (from -1 to INT_MAX) (default 1472)
-reuse <boolean> ED...... explicitly allow reusing UDP sockets (default auto)
-reuse_socket <boolean> ED...... explicitly allow reusing UDP sockets (default auto)
-broadcast <boolean> E....... explicitly allow or disallow broadcast destination (default false)
-ttl <int> E....... Time to live (multicast only) (from 0 to INT_MAX) (default 16)
-connect <boolean> ED...... set if connect() should be called on socket (default false)
-fifo_size <int> .D...... set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes (from 0 to INT_MAX) (default 28672)
-overrun_nonfatal <boolean> .D...... survive in case of UDP receiving circular buffer overrun (default false)
-timeout <int> .D...... set raise error timeout (only in read mode) (from 0 to INT_MAX) (default 0)
-sources <string> ED...... Source list
-block <string> ED...... Block list
udplite AVOptions
-buffer_size <int> ED...... System data size (in bytes) (from -1 to INT_MAX) (default -1)
-bitrate <int64> E....... Bits to send per second (from 0 to I64_MAX) (default 0)
-burst_bits <int64> E....... Max length of bursts in bits (when using bitrate) (from 0 to I64_MAX) (default 0)
-localport <int> ED...... Local port (from -1 to INT_MAX) (default -1)
-local_port <int> ED...... Local port (from -1 to INT_MAX) (default -1)
-localaddr <string> ED...... Local address
-udplite_coverage <int> ED...... choose UDPLite head size which should be validated by checksum (from 0 to INT_MAX) (default 0)
-pkt_size <int> ED...... Maximum UDP packet size (from -1 to INT_MAX) (default 1472)
-reuse <boolean> ED...... explicitly allow reusing UDP sockets (default auto)
-reuse_socket <boolean> ED...... explicitly allow reusing UDP sockets (default auto)
-broadcast <boolean> E....... explicitly allow or disallow broadcast destination (default false)
-ttl <int> E....... Time to live (multicast only) (from 0 to INT_MAX) (default 16)
-connect <boolean> ED...... set if connect() should be called on socket (default false)
-fifo_size <int> .D...... set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes (from 0 to INT_MAX) (default 28672)
-overrun_nonfatal <boolean> .D...... survive in case of UDP receiving circular buffer overrun (default false)
-timeout <int> .D...... set raise error timeout (only in read mode) (from 0 to INT_MAX) (default 0)
-sources <string> ED...... Source list
-block <string> ED...... Block list
unix AVOptions
-listen <boolean> ED...... Open socket for listening (default false)
-timeout <int> ED...... Timeout in ms (from -1 to INT_MAX) (default -1)
-type <int> ED...... Socket type (from INT_MIN to INT_MAX) (default stream)
stream ED...... Stream (reliable stream-oriented)
datagram ED...... Datagram (unreliable packet-oriented)
seqpacket ED...... Seqpacket (reliable packet-oriented
AVFoundation input device AVOptions
-list_devices <int> .D...... list available devices (from 0 to 1) (default false)
true .D......
false .D......
-video_device_index <int> .D...... select video device by index for devices with same name (starts at 0) (from -1 to INT_MAX) (default -1)
-audio_device_index <int> .D...... select audio device by index for devices with same name (starts at 0) (from -1 to INT_MAX) (default -1)
-pixel_format <pix_fmt> .D...... set pixel format (default yuv420p)
-framerate <video_rate> .D...... set frame rate (default "ntsc")
-video_size <image_size> .D...... set video size
-capture_cursor <int> .D...... capture the screen cursor (from 0 to 1) (default 0)
-capture_mouse_clicks <int> .D...... capture the screen mouse clicks (from 0 to 1) (default 0)
lavfi indev AVOptions
-graph <string> .D...... set libavfilter graph
-graph_file <string> .D...... set libavfilter graph filename
-dumpgraph <string> .D...... dump graph to stderr
Demuxer Options
aa AVOptions
-aa_fixed_key <binary> .D...... Fixed key used for handling Audible AA files
Artworx Data Format demuxer AVOptions
-linespeed <int> .D...... set simulated line speed (bytes per second) (from 1 to INT_MAX) (default 6000)
-video_size <image_size> .D...... set video size, such as 640x480 or hd720.
-framerate <video_rate> .D...... set framerate (frames per second) (default "25")
APNG demuxer AVOptions
-ignore_loop <boolean> .D...... ignore loop setting (default true)
-max_fps <int> .D...... maximum framerate (0 is no limit) (from 0 to INT_MAX) (default 0)
-default_fps <int> .D...... default framerate (0 is as fast as possible) (from 0 to INT_MAX) (default 15)
aqtdec AVOptions
-subfps <rational> .D...S.. set the movie frame rate (from 0 to INT_MAX) (default 25/1)
asf demuxer AVOptions
-no_resync_search <boolean> .D...... Don't try to resynchronize by looking for a certain optional start code (default false)
-export_xmp <boolean> .D...... Export full XMP metadata (default false)
avi AVOptions
-use_odml <boolean> .D...... use odml index (default true)
Binary text demuxer AVOptions
-linespeed <int> .D...... set simulated line speed (bytes per second) (from 1 to INT_MAX) (default 6000)
-video_size <image_size> .D...... set video size, such as 640x480 or hd720.
-framerate <video_rate> .D...... set framerate (frames per second) (default "25")
cavsvideo demuxer AVOptions
-framerate <video_rate> .D...... (default "25")
CDXL demuxer AVOptions
-sample_rate <int> .D...... (from 1 to INT_MAX) (default 11025)
-framerate <string> .D......
concat demuxer AVOptions
-safe <boolean> .D...... enable safe mode (default true)
-auto_convert <boolean> .D...... automatically convert bitstream format (default true)
-segment_time_metadata <boolean> .D...... output file segment start time and duration as packet metadata (default false)
dirac demuxer AVOptions
-framerate <video_rate> .D...... (default "25")
dnxhd demuxer AVOptions
-framerate <video_rate> .D...... (default "25")
dvbsub demuxer AVOptions
-framerate <video_rate> .D...... (default "25")
dvbtxt demuxer AVOptions
-framerate <video_rate> .D...... (default "25")
ffm demuxer AVOptions
FITS demuxer AVOptions
-framerate <video_rate> .D...... set the framerate (default "1")
flvdec AVOptions
-flv_metadata <boolean> .D.V.... Allocate streams according to the onMetaData array (default false)
-missing_streams <int> .D.V..XR (from 0 to 255) (default 0)