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avconv.txt
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Hyper fast Audio and Video encoder
usage: avconv [options] [[infile options] -i infile]... {[outfile options] outfile}...
Main options:
-L show license
-h show help
-? show help
-help show help
--help show help
-version show version
-formats show available formats
-codecs show available codecs
-bsfs show available bit stream filters
-protocols show available protocols
-filters show available filters
-pix_fmts show available pixel formats
-sample_fmts show available audio sample formats
-loglevel loglevel set libav* logging level
-v loglevel set libav* logging level
-f fmt force format
-i filename input file name
-y overwrite output files
-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
-fs limit_size set the limit file size in bytes
-ss time_off set the start time offset
-itsoffset time_off set the input ts offset
-itsscale scale set the input ts scale
-metadata string=string add metadata
-dframes number set the number of data frames to record
-timelimit limit set max runtime in seconds
-target type specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd", "ntsc-svcd", ...)
-xerror exit on error
-frames number set the number of frames to record
-tag fourcc/tag force codec tag/fourcc
-filter filter_list set stream filterchain
-stats print progress report during encoding
-attach filename add an attachment to the output file
-dump_attachment filename extract an attachment into a file
-bsf bitstream_filters A comma-separated list of bitstream filters
-dcodec codec force data codec ('copy' to copy stream)
Advanced options:
-map [-]input_file_id[:stream_specifier][,sync_file_id[:stream_s set input stream mapping
-map_chapters input_file_index set chapters mapping
-benchmark add timings for benchmarking
-dump dump each input packet
-hex when dumping packets, also dump the payload
-re read input at native frame rate
-vsync video sync method
-async audio sync method
-adrift_threshold threshold audio drift threshold
-copyts copy timestamps
-copytb copy input stream time base when stream copying
-shortest finish encoding within shortest input
-dts_delta_threshold threshold timestamp discontinuity delta threshold
-copyinkf copy initial non-keyframes
-q q use fixed quality scale (VBR)
-qscale q use fixed quality scale (VBR)
-streamid streamIndex:value set the value of an outfile streamid
-muxdelay seconds set the maximum demux-decode delay
-muxpreload seconds set the initial demux-decode delay
Video options:
-vframes number set the number of video frames to record
-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)
-vn disable video
-vcodec codec force video codec ('copy' to copy stream)
-same_quant use same quantizer as source (implies VBR)
-pass n select the pass number (1 or 2)
-passlogfile prefix select two pass log file name prefix
-vf filter list video filters
Advanced Video options:
-pix_fmt format set pixel format
-vdt n discard threshold
-rc_override override rate control override for specific intervals
-deinterlace deinterlace pictures
-vstats dump video coding statistics to file
-vstats_file file dump video coding statistics to file
-intra_matrix matrix specify intra matrix coeffs
-inter_matrix matrix specify inter matrix coeffs
-top top=1/bottom=0/auto=-1 field first
-dc precision intra_dc_precision
-vtag fourcc/tag force video tag/fourcc
-qphist show QP histogram
-force_fps force the selected framerate, disable the best supported framerate selection
-force_key_frames timestamps force key frames at specified timestamps
Audio options:
-aframes number set the number of audio frames to record
-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)
Advanced Audio options:
-atag fourcc/tag force audio tag/fourcc
-sample_fmt format set sample format
Subtitle options:
-sn disable subtitle
-scodec codec force subtitle codec ('copy' to copy stream)
-stag fourcc/tag force subtitle tag/fourcc
Audio/Video grab options:
-isync sync read on input
AVCodecContext AVOptions:
-b <int> E.VA. set bitrate (in bits/s)
-ab <int> E..A. this option is deprecated, use b
-bt <int> E.V.. set video bitrate tolerance (in bits/s)
-flags <flags> EDVA.
mv4 E.V.. use four motion vector by macroblock (mpeg4)
obmc E.V.. use overlapped block motion compensation (h263+)
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>
part E.V.. use data partitioning
gray EDV.. only decode/encode grayscale
psnr E.V.. error[?] variables will be set during encoding
naq E.V.. normalize adaptive quantization
ildct E.V.. use interlaced dct
low_delay EDV.. force low delay
alt E.V.. enable alternate scantable (mpeg2/mpeg4)
global_header E.VA. place global headers in extradata instead of every keyframe
bitexact EDVAS use only bitexact stuff (except (i)dct)
aic E.V.. h263 advanced intra coding / mpeg4 ac prediction
umv E.V.. use unlimited motion vectors
cbp E.V.. use rate distortion optimization for cbp
qprd E.V.. use rate distortion optimization for qp selection
aiv E.V.. h263 alternative inter vlc
slice E.V..
ilme E.V.. interlaced motion estimation
scan_offset E.V.. will reserve space for svcd scan offset user data
cgop E.V.. closed gop
-me_method <int> E.V.. set motion estimation method
zero E.V.. zero motion estimation (fastest)
full E.V.. full motion estimation (slowest)
epzs E.V.. EPZS motion estimation (default)
esa E.V.. esa motion estimation (alias for full)
tesa E.V.. tesa motion estimation
dia E.V.. dia 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 size
-ar <int> ED.A. set audio sampling rate (in Hz)
-ac <int> ED.A. set number of audio channels
-cutoff <int> E..A. set cutoff bandwidth
-frame_size <int> E..A.
-qcomp <float> E.V.. video quantizer scale compression (VBR)
-qblur <float> E.V.. video quantizer scale blur (VBR)
-qmin <int> E.V.. min video quantizer scale (VBR)
-qmax <int> E.V.. max video quantizer scale (VBR)
-qdiff <int> E.V.. max difference between the quantizer scale (VBR)
-bf <int> E.V.. use 'frames' B frames
-b_qfactor <float> E.V.. qp factor between p and b frames
-rc_strategy <int> E.V.. ratecontrol method
-b_strategy <int> E.V.. strategy to choose between I/P/B-frames
-wpredp <int> E.V.. weighted prediction analysis method
-ps <int> E.V.. rtp payload size in bytes
-bug <flags> .DV.. workaround not auto detected encoder bugs
autodetect .DV..
old_msmpeg4 .DV.. some old lavc generated msmpeg4v3 files (no autodetection)
xvid_ilace .DV.. Xvid interlacing bug (autodetected if fourcc==XVIX)
ump4 .DV.. (autodetected if fourcc==UMP4)
no_padding .DV.. padding bug (autodetected)
amv .DV..
ac_vlc .DV.. illegal vlc bug (autodetected per fourcc)
qpel_chroma .DV..
std_qpel .DV.. old standard qpel (autodetected per fourcc/version)
qpel_chroma2 .DV..
direct_blocksize .DV.. direct-qpel-blocksize bug (autodetected per fourcc/version)
edge .DV.. edge padding bug (autodetected per fourcc/version)
hpel_chroma .DV..
dc_clip .DV..
ms .DV.. workaround various bugs in microsofts broken decoders
trunc .DV.. trancated frames
-lelim <int> E.V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-celim <int> E.V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-strict <int> EDVA. how strictly to follow the standards
very EDV.. strictly conform to a older more strict version of the spec or reference software
strict EDV.. strictly conform to all the things in the spec no matter what consequences
normal EDV..
unofficial EDV.. allow unofficial extensions
experimental EDV.. allow non standardized experimental things
-b_qoffset <float> E.V.. qp offset between P and B frames
-er <int> .DVA. set error detection aggressivity
careful .DV..
compliant .DV..
aggressive .DV..
very_aggressive .DV..
explode .DV.. abort decoding on error recognition
-err_detect <flags> .DVA. set error detection flags
crccheck .DV.. verify embedded CRCs
bitstream .DV.. detect bitstream specification deviations
buffer .DV.. detect improper bitstream length
explode .DV.. abort decoding on minor error detection
-mpeg_quant <int> E.V.. use MPEG quantizers instead of H.263
-qsquish <float> E.V.. how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
-rc_qmod_amp <float> E.V.. experimental quantizer modulation
-rc_qmod_freq <int> E.V.. experimental quantizer modulation
-rc_eq <string> E.V.. set rate control equation
-maxrate <int> E.VA. set max bitrate tolerance (in bits/s)
-minrate <int> E.VA. set min bitrate tolerance (in bits/s)
-bufsize <int> E.VA. set ratecontrol buffer size (in bits)
-rc_buf_aggressivity <float> E.V.. currently useless
-i_qfactor <float> E.V.. qp factor between P and I frames
-i_qoffset <float> E.V.. qp offset between P and I frames
-rc_init_cplx <float> E.V.. initial complexity for 1-pass encoding
-dct <int> E.V.. DCT algorithm
auto E.V.. autoselect a good one (default)
fastint E.V.. fast integer
int E.V.. accurate integer
mmx E.V..
mlib E.V..
altivec E.V..
faan E.V.. floating point AAN DCT
-lumi_mask <float> E.V.. compresses bright areas stronger than medium ones
-tcplx_mask <float> E.V.. temporal complexity masking
-scplx_mask <float> E.V.. spatial complexity masking
-p_mask <float> E.V.. inter masking
-dark_mask <float> E.V.. compresses dark areas stronger than medium ones
-idct <int> EDV.. select IDCT implementation
auto EDV..
int EDV..
simple EDV..
simplemmx EDV..
libmpeg2mmx EDV..
ps2 EDV..
mlib EDV..
arm EDV..
altivec EDV..
sh4 EDV..
simplearm EDV..
simplearmv5te EDV..
simplearmv6 EDV..
simpleneon EDV..
simplealpha EDV..
h264 EDV..
vp3 EDV..
ipp EDV..
xvidmmx EDV..
faani EDV.. floating point AAN IDCT
-ec <flags> .DV.. set error concealment strategy
guess_mvs .DV.. iterative motion vector (MV) search (slow)
deblock .DV.. use strong deblock filter for damaged MBs
-pred <int> E.V.. prediction method
left E.V..
plane E.V..
median E.V..
-aspect <rational> E.V.. sample aspect ratio
-debug <flags> EDVAS print specific debug info
pict .DV.. picture info
rc E.V.. rate control
bitstream .DV..
mb_type .DV.. macroblock (MB) type
qp .DV.. per-block quantization parameter (QP)
mv .DV.. motion vector
dct_coeff .DV..
skip .DV..
startcode .DV..
pts .DV..
er .DV.. error recognition
mmco .DV.. memory management control operations (H.264)
bugs .DV..
vis_qp .DV.. visualize quantization parameter (QP), lower QP are tinted greener
vis_mb_type .DV.. visualize block types
buffers .DV.. picture buffer allocations
thread_ops .DV.. threading operations
-vismv <int> .DV.. visualize motion vectors (MVs)
pf .DV.. forward predicted MVs of P-frames
bf .DV.. forward predicted MVs of B-frames
bb .DV.. backward predicted MVs of B-frames
-cmp <int> E.V.. full pel me compare function
sad E.V.. sum of absolute differences, fast (default)
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..
-subcmp <int> E.V.. sub pel me compare function
sad E.V.. sum of absolute differences, fast (default)
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..
-mbcmp <int> E.V.. macroblock compare function
sad E.V.. sum of absolute differences, fast (default)
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..
-ildctcmp <int> E.V.. interlaced dct compare function
sad E.V.. sum of absolute differences, fast (default)
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..
-dia_size <int> E.V.. diamond type & size for motion estimation
-last_pred <int> E.V.. amount of motion predictors from the previous frame
-preme <int> E.V.. pre motion estimation
-precmp <int> E.V.. pre motion estimation compare function
sad E.V.. sum of absolute differences, fast (default)
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..
-pre_dia_size <int> E.V.. diamond type & size for motion estimation pre-pass
-subq <int> E.V.. sub pel motion estimation quality
-me_range <int> E.V.. limit motion vectors range (1023 for DivX player)
-ibias <int> E.V.. intra quant bias
-pbias <int> E.V.. inter quant bias
-global_quality <int> E.VA.
-coder <int> E.V..
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
-mbd <int> E.V.. macroblock decision algorithm (high quality mode)
simple E.V.. use mbcmp (default)
bits E.V.. use fewest bits
rd E.V.. use best rate distortion
-sc_threshold <int> E.V.. scene change threshold
-lmin <int> E.V.. min lagrange factor (VBR)
-lmax <int> E.V.. max lagrange factor (VBR)
-nr <int> E.V.. noise reduction
-rc_init_occupancy <int> E.V.. number of bits which should be loaded into the rc buffer before decoding starts
-inter_threshold <int> E.V..
-flags2 <flags> EDVA.
fast E.V.. allow non spec compliant speedup tricks
sgop E.V.. strictly enforce gop size
noout E.V.. skip bitstream encoding
local_header E.V.. place global headers at every keyframe instead of in extradata
bpyramid E.V.. allows B-frames to be used as references for predicting
wpred E.V.. weighted biprediction for b-frames (H.264)
mixed_refs E.V.. one reference per partition, as opposed to one reference per macroblock
dct8x8 E.V.. high profile 8x8 transform (H.264)
fastpskip E.V.. fast pskip (H.264)
aud E.V.. access unit delimiters (H.264)
skiprd E.V.. RD optimal MB level residual skipping
ivlc E.V.. intra vlc table
drop_frame_timecode E.V..
non_linear_q E.V.. use non linear quantizer
reservoir E..A. use bit reservoir
mbtree E.V.. use macroblock tree ratecontrol (x264 only)
psy E.V.. use psycho visual optimization
ssim E.V.. ssim will be calculated during encoding
intra_refresh E.V.. use periodic insertion of intra blocks instead of keyframes
-error <int> E.V..
-antialias <int> .DV.. MP3 antialias algorithm
auto .DV..
fastint .DV..
int .DV..
float .DV..
-qns <int> E.V.. quantizer noise shaping
-threads <int> EDV..
auto EDV.. detect a good number of threads
-me_threshold <int> E.V.. motion estimaton threshold
-mb_threshold <int> E.V.. macroblock threshold
-dc <int> E.V.. intra_dc_precision
-nssew <int> E.V.. nsse weight
-skip_top <int> .DV.. number of macroblock rows at the top which are skipped
-skip_bottom <int> .DV.. number of macroblock rows at the bottom which are skipped
-profile <int> E.VA.
unknown E.VA.
aac_main E..A.
aac_low E..A.
aac_ssr E..A.
aac_ltp E..A.
dts E..A.
dts_es E..A.
dts_96_24 E..A.
dts_hd_hra E..A.
dts_hd_ma E..A.
-level <int> E.VA.
unknown E.VA.
-lowres <int> .DVA. decode at 1= 1/2, 2=1/4, 3=1/8 resolutions
-skip_threshold <int> E.V.. frame skip threshold
-skip_factor <int> E.V.. frame skip factor
-skip_exp <int> E.V.. frame skip exponent
-skipcmp <int> E.V.. frame skip compare function
sad E.V.. sum of absolute differences, fast (default)
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..
-border_mask <float> E.V.. increases the quantizer for macroblocks close to borders
-mblmin <int> E.V.. min macroblock lagrange factor (VBR)
-mblmax <int> E.V.. max macroblock lagrange factor (VBR)
-mepc <int> E.V.. motion estimation bitrate penalty compensation (1.0 = 256)
-skip_loop_filter <int> .DV..
none .DV..
default .DV..
noref .DV..
bidir .DV..
nokey .DV..
all .DV..
-skip_idct <int> .DV..
none .DV..
default .DV..
noref .DV..
bidir .DV..
nokey .DV..
all .DV..
-skip_frame <int> .DV..
none .DV..
default .DV..
noref .DV..
bidir .DV..
nokey .DV..
all .DV..
-bidir_refine <int> E.V.. refine the two motion vectors used in bidirectional macroblocks
-brd_scale <int> E.V.. downscales frames for dynamic B-frame decision
-crf <float> E.V.. enables constant quality mode, and selects the quality (x264)
-cqp <int> E.V.. constant quantization parameter rate control method
-keyint_min <int> E.V.. minimum interval between IDR-frames (x264)
-refs <int> E.V.. reference frames to consider for motion compensation (Snow)
-chromaoffset <int> E.V.. chroma qp offset from luma
-bframebias <int> E.V.. influences how often B-frames are used
-trellis <int> E.VA. rate-distortion optimal quantization
-directpred <int> E.V.. direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
-complexityblur <float> E.V.. reduce fluctuations in qp (before curve compression)
-deblockalpha <int> E.V.. in-loop deblocking filter alphac0 parameter
-deblockbeta <int> E.V.. in-loop deblocking filter beta parameter
-partitions <flags> E.V.. macroblock subpartition sizes to consider
parti4x4 E.V..
parti8x8 E.V..
partp4x4 E.V..
partp8x8 E.V..
partb8x8 E.V..
-sc_factor <int> E.V.. multiplied by qscale for each frame and added to scene_change_score
-mv0_threshold <int> E.V..
-b_sensitivity <int> E.V.. adjusts sensitivity of b_frame_strategy 1
-compression_level <int> E.VA.
-min_prediction_order <int> E..A.
-max_prediction_order <int> E..A.
-lpc_coeff_precision <int> E..A. deprecated, use flac-specific options
-prediction_order_method <int> E..A. deprecated, use flac-specific options
-min_partition_order <int> E..A. deprecated, use flac-specific options
-max_partition_order <int> E..A. deprecated, use flac-specific options
-timecode_frame_start <int64> E.V.. GOP timecode frame start number, in non drop frame format
-request_channels <int> .D.A. set desired number of audio channels
-drc_scale <float> .D.A. percentage of dynamic range compression to apply
-channel_layout <int64> ED.A.
-request_channel_layout <int64> .D.A.
-rc_max_vbv_use <float> E.V..
-rc_min_vbv_use <float> E.V..
-ticks_per_frame <int> EDVA.
-color_primaries <int> EDV..
-color_trc <int> EDV..
-colorspace <int> EDV..
-color_range <int> EDV..
-chroma_sample_location <int> EDV..
-psy_rd <float> E.V.. specify psycho visual strength
-psy_trellis <float> E.V.. specify psycho visual trellis
-aq_mode <int> E.V.. specify aq method
-aq_strength <float> E.V.. specify aq strength
-rc_lookahead <int> E.V.. specify number of frames to look ahead for frametype
-crf_max <float> E.V.. in crf mode, prevents vbv from lowering quality beyond this point
-lpc_type <int> E..A. deprecated, use flac-specific options
-lpc_passes <int> E..A. deprecated, use flac-specific options
-slices <int> E.V.. number of slices, used in parallelized encoding
-thread_type <flags> EDV.. select multithreading type
slice EDV..
frame EDV..
-audio_service_type <int> E..A. audio service type
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 <int> .D.A.
u8 .D.A. 8-bit unsigned integer
s16 .D.A. 16-bit signed integer
s32 .D.A. 32-bit signed integer
flt .D.A. 32-bit float
dbl .D.A. 64-bit double
dnxhd AVOptions:
-nitris_compat <int> E.V.. encode with Avid Nitris compatibility
H.263 encoder AVOptions:
-obmc <int> E.V.. use overlapped block motion compensation.
-structured_slices <int> E.V.. Write slice start position at every GOB header instead of just GOB number.
H.263p encoder AVOptions:
-umv <int> E.V.. Use unlimited motion vectors.
-aiv <int> E.V.. Use alternative inter VLC.
-obmc <int> E.V.. use overlapped block motion compensation.
-structured_slices <int> E.V.. Write slice start position at every GOB header instead of just GOB number.
MJPEG decoder AVOptions:
-extern_huff <int> .DV.. Use external huffman table.
mpeg1video encoder AVOptions:
-intra_vlc <int> E.V.. Use MPEG-2 intra VLC table.
-drop_frame_timecode <int> E.V.. Timecode is in drop frame format.
-scan_offset <int> E.V.. Reserve space for SVCD scan offset user data.
mpeg2video encoder AVOptions:
-intra_vlc <int> E.V.. Use MPEG-2 intra VLC table.
-drop_frame_timecode <int> E.V.. Timecode is in drop frame format.
-scan_offset <int> E.V.. Reserve space for SVCD scan offset user data.
-non_linear_quant <int> E.V.. Use nonlinear quantizer.
-alternate_scan <int> E.V.. Enable alternate scantable.
MPEG4 encoder AVOptions:
-data_partitioning <int> E.V.. Use data partitioning.
-alternate_scan <int> E.V.. Enable alternate scantable.
snow encoder AVOptions:
-memc_only <int> E.V.. Only do ME/MC (I frames -> ref, P frame -> ME+MC).
TIFF encoder AVOptions:
-compression_algo <int> E.V..
packbits E.V..
raw E.V..
lzw E.V..
deflate E.V..
AAC encoder AVOptions:
-stereo_mode <int> E..A. Stereo coding method
auto E..A. Selected by the Encoder
ms_off E..A. Disable Mid/Side coding
ms_force E..A. Force Mid/Side for the whole frame if possible
AC-3 Encoder AVOptions:
-per_frame_metadata <int> E..A. Allow Changing Metadata Per-Frame
-center_mixlev <float> E..A. Center Mix Level
-surround_mixlev <float> E..A. Surround Mix Level
-mixing_level <int> E..A. Mixing Level
-room_type <int> E..A. Room Type
notindicated E..A. Not Indicated (default)
large E..A. Large Room
small E..A. Small Room
-copyright <int> E..A. Copyright Bit
-dialnorm <int> E..A. Dialogue Level (dB)
-dsur_mode <int> E..A. Dolby Surround Mode
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
-dmix_mode <int> E..A. Preferred Stereo Downmix Mode
notindicated E..A. Not Indicated (default)
ltrt E..A. Lt/Rt Downmix Preferred
loro E..A. Lo/Ro Downmix Preferred
-ltrt_cmixlev <float> E..A. Lt/Rt Center Mix Level
-ltrt_surmixlev <float> E..A. Lt/Rt Surround Mix Level
-loro_cmixlev <float> E..A. Lo/Ro Center Mix Level
-loro_surmixlev <float> E..A. Lo/Ro Surround Mix Level
-dsurex_mode <int> E..A. Dolby Surround EX Mode
notindicated E..A. Not Indicated (default)
on E..A. Dolby Surround EX Encoded
off E..A. Not Dolby Surround EX Encoded
-dheadphone_mode <int> E..A. Dolby Headphone Mode
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
standard E..A. Standard (default)
hdcd E..A. HDCD
-stereo_rematrixing <int> E..A. Stereo Rematrixing
-channel_coupling <int> E..A. Channel Coupling
auto E..A. Selected by the Encoder
-cpl_start_band <int> E..A. Coupling Start Band
auto E..A. Selected by the Encoder
AC3 decoder AVOptions:
-drc_scale <float> .D.A. percentage of dynamic range compression to apply
Fixed-Point AC-3 Encoder AVOptions:
-per_frame_metadata <int> E..A. Allow Changing Metadata Per-Frame
-center_mixlev <float> E..A. Center Mix Level
-surround_mixlev <float> E..A. Surround Mix Level
-mixing_level <int> E..A. Mixing Level
-room_type <int> E..A. Room Type
notindicated E..A. Not Indicated (default)
large E..A. Large Room
small E..A. Small Room
-copyright <int> E..A. Copyright Bit
-dialnorm <int> E..A. Dialogue Level (dB)
-dsur_mode <int> E..A. Dolby Surround Mode
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
-dmix_mode <int> E..A. Preferred Stereo Downmix Mode
notindicated E..A. Not Indicated (default)
ltrt E..A. Lt/Rt Downmix Preferred
loro E..A. Lo/Ro Downmix Preferred
-ltrt_cmixlev <float> E..A. Lt/Rt Center Mix Level
-ltrt_surmixlev <float> E..A. Lt/Rt Surround Mix Level
-loro_cmixlev <float> E..A. Lo/Ro Center Mix Level
-loro_surmixlev <float> E..A. Lo/Ro Surround Mix Level
-dsurex_mode <int> E..A. Dolby Surround EX Mode
notindicated E..A. Not Indicated (default)
on E..A. Dolby Surround EX Encoded
off E..A. Not Dolby Surround EX Encoded
-dheadphone_mode <int> E..A. Dolby Headphone Mode
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
standard E..A. Standard (default)
hdcd E..A. HDCD
-stereo_rematrixing <int> E..A. Stereo Rematrixing
-channel_coupling <int> E..A. Channel Coupling
auto E..A. Selected by the Encoder
-cpl_start_band <int> E..A. Coupling Start Band
auto E..A. Selected by the Encoder
E-AC-3 Encoder AVOptions:
-per_frame_metadata <int> E..A. Allow Changing Metadata Per-Frame
-mixing_level <int> E..A. Mixing Level
-room_type <int> E..A. Room Type
notindicated E..A. Not Indicated (default)
large E..A. Large Room
small E..A. Small Room
-copyright <int> E..A. Copyright Bit
-dialnorm <int> E..A. Dialogue Level (dB)
-dsur_mode <int> E..A. Dolby Surround Mode
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
-dmix_mode <int> E..A. Preferred Stereo Downmix Mode
notindicated E..A. Not Indicated (default)
ltrt E..A. Lt/Rt Downmix Preferred
loro E..A. Lo/Ro Downmix Preferred
-ltrt_cmixlev <float> E..A. Lt/Rt Center Mix Level
-ltrt_surmixlev <float> E..A. Lt/Rt Surround Mix Level
-loro_cmixlev <float> E..A. Lo/Ro Center Mix Level
-loro_surmixlev <float> E..A. Lo/Ro Surround Mix Level
-dsurex_mode <int> E..A. Dolby Surround EX Mode
notindicated E..A. Not Indicated (default)
on E..A. Dolby Surround EX Encoded
off E..A. Not Dolby Surround EX Encoded
-dheadphone_mode <int> E..A. Dolby Headphone Mode
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
standard E..A. Standard (default)
hdcd E..A. HDCD
-stereo_rematrixing <int> E..A. Stereo Rematrixing
-channel_coupling <int> E..A. Channel Coupling
auto E..A. Selected by the Encoder
-cpl_start_band <int> E..A. Coupling Start Band
auto E..A. Selected by the Encoder
E-AC3 decoder AVOptions:
-drc_scale <float> .D.A. percentage of dynamic range compression to apply
FLAC encoder AVOptions:
-lpc_coeff_precision <int> E..A. LPC coefficient precision
-lpc_type <int> E..A. LPC algorithm
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
-min_partition_order <int> E..A.
-max_partition_order <int> E..A.
-prediction_order_method <int> E..A. Search method for selecting prediction order
estimation E..A.
2level E..A.
4level E..A.
8level E..A.
search E..A.
log E..A.
g722 decoder AVOptions:
-bits_per_codeword <flags> .D.A. Bits per G722 codeword
g726 AVOptions:
-code_size <int> E..A. Bits per code
libmp3lame encoder AVOptions:
-reservoir <int> E..A. Use bit reservoir.
libspeex AVOptions:
-abr <int> E..A. Use average bit rate
-cbr_quality <int> E..A. Set quality value (0 to 10) for CBR
-frames_per_packet <int> E..A. Number of frames to encode in each packet
libvorbis AVOptions:
-iblock <double> E..A. Sets the impulse block bias
libvpx encoder AVOptions:
-cpu-used <int> E.V.. Quality/Speed ratio modifier
-auto-alt-ref <int> E.V.. Enable use of alternate reference frames (2-pass only)
-lag-in-frames <int> E.V.. Number of frames to look ahead for alternate reference frame selection
-arnr-maxframes <int> E.V.. altref noise reduction max frame count
-arnr-strength <int> E.V.. altref noise reduction filter strength
-arnr-type <int> E.V.. altref noise reduction filter type
backward E.V..
forward E.V..
centered E.V..
-deadline <int> E.V.. Time to spend encoding, in microseconds.
best E.V..
good E.V..
realtime E.V..
-error-resilient <flags> E.V.. Error resilience configuration
default E.V.. Improve resiliency against losses of whole frames
partitions E.V.. The frame partitions are independently decodable by the bool decoder, meaning that partitions can be decoded even though earlier partitions have been lost. Note that intra predicition is still done over the partition boundary.
libx264 AVOptions:
-preset <string> E.V.. Set the encoding preset (cf. x264 --fullhelp)
-tune <string> E.V.. Tune the encoding params (cf. x264 --fullhelp)
-profile <string> E.V.. Set profile restrictions (cf. x264 --fullhelp)
-fastfirstpass <int> E.V.. Use fast settings when encoding first pass
-crf <float> E.V.. Select the quality for constant quality mode
-crf_max <float> E.V.. In CRF mode, prevents VBV from lowering quality beyond this point.
-qp <int> E.V.. Constant quantization parameter rate control method
-aq-mode <int> E.V.. AQ method
none E.V..
variance E.V.. Variance AQ (complexity mask)
autovariance E.V.. Auto-variance AQ (experimental)
-aq-strength <float> E.V.. AQ strength. Reduces blocking and blurring in flat and textured areas.
-psy <int> E.V.. Use psychovisual optimizations.
-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
-weightb <int> E.V.. Weighted prediction for B-frames.
-weightp <int> E.V.. Weighted prediction analysis method.
none E.V..
simple E.V..
smart E.V..
-ssim <int> E.V.. Calculate and print SSIM stats.
-intra-refresh <int> E.V.. Use Periodic Intra Refresh instead of IDR frames.
-b-bias <int> E.V.. Influences how often B-frames are used
-b-pyramid <int> E.V.. Keep some B-frames as references.
none E.V..
strict E.V.. Strictly hierarchical pyramid
normal E.V.. Non-strict (not Blu-ray compatible)
-mixed-refs <int> E.V.. One reference per partition, as opposed to one reference per macroblock
-8x8dct <int> E.V.. High profile 8x8 transform.
-fast-pskip <int> E.V..
-aud <int> E.V.. Use access unit delimiters.
-mbtree <int> E.V.. Use macroblock tree ratecontrol.
-deblock <string> E.V.. Loop filter parameters, in <alpha:beta> form.
-cplxblur <float> E.V.. Reduce fluctuations in QP (before curve compression)
-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
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
-stats <string> E.V.. Filename for 2 pass stats
AVFormatContext AVOptions:
-probesize <int> .D... set probing size
-muxrate <int> E.... set mux rate
-packetsize <int> E.... set packet size
-fflags <flags> ED...
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
rtphint E.... add rtp hinting (deprecated, use the -movflags rtphint option instead)
discardcorrupt .D... discard corrupted frames
-analyzeduration <int> .D... how many microseconds are analyzed to estimate duration
-cryptokey <binary> .D... decryption key
-indexmem <int> .D... max memory used for timestamp index (per stream)
-rtbufsize <int> .D... max memory used for buffering real-time frames
-fdebug <flags> ED... print specific debug info
ts ED...
-max_delay <int> ED... maximum muxing or demuxing delay in microseconds
-fpsprobesize <int> .D... number of frames used to probe fps
-f_err_detect <flags> .D... set error detection flags (deprecated; use err_detect, save via avconv)
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
-err_detect <flags> .D... set error detection flags
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
ALSA demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
DV1394 indev AVOptions:
-standard <int> .D...
PAL .D...
NTSC .D...
-channel <int> .D...
fbdev indev AVOptions:
-framerate <string> .D...
JACK indev AVOptions:
-channels <int> .D... Number of audio channels.
OSS demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
Pulse demuxer AVOptions:
-server <string> .D... pulse server name
-name <string> .D... application name
-stream_name <string> .D... stream description
-sample_rate <int> .D... sample rate in Hz
-channels <int> .D... number of audio channels
-frame_size <int> .D... number of bytes per frame
-fragment_size <int> .D... buffering size, affects latency and cpu usage
V4L2 indev AVOptions:
-standard <string> .D... TV standard, used only by analog frame grabber
-channel <int> .D... TV channel, used only by frame grabber
-video_size <string> .D... A string describing frame size, such as 640x480 or hd720.
-pixel_format <string> .D... Preferred pixel format
-input_format <string> .D... Preferred pixel format (for raw video) or codec name
-framerate <string> .D...
-list_formats <int> .D... List available formats and exit
all .D... Show all available formats
raw .D... Show only non-compressed formats
compressed .D... Show only compressed formats
X11grab indev AVOptions:
-video_size <string> .D... A string describing frame size, such as 640x480 or hd720.
-framerate <string> .D...
-draw_mouse <int> .D... Draw the mouse pointer.
-follow_mouse <int> .D... Move the grabbing region when the mouse pointer reaches within specified amount of pixels to the edge of region.
centered .D... Keep the mouse pointer at the center of grabbing region when following.
-show_region <int> .D... Show the grabbing region.
libcdio indev AVOptions:
-speed <int> .D... Drive reading speed.
-paranoia_mode <flags> .D... Error recovery mode.
verify .D... Verify data integrity in overlap area
overlap .D... Perform overlapped reads.
neverskip .D... Do not skip failed reads.
libdc1394 indev AVOptions:
-video_size <string> .D... A string describing frame size, such as 640x480 or hd720.
-pixel_format <string> .D...
-framerate <string> .D...
cavsvideo demuxer AVOptions:
-framerate <string> .D...
dirac demuxer AVOptions:
-framerate <string> .D...
dnxhd demuxer AVOptions:
-framerate <string> .D...
gsm demuxer AVOptions:
-sample_rate <int> .D...
h261 demuxer AVOptions:
-framerate <string> .D...
h263 demuxer AVOptions:
-framerate <string> .D...
h264 demuxer AVOptions:
-framerate <string> .D...
image2 demuxer AVOptions:
-pixel_format <string> .D...
-video_size <string> .D...
-framerate <string> .D...
-loop <int> .D...
image2pipe demuxer AVOptions:
-pixel_format <string> .D...
-video_size <string> .D...
-framerate <string> .D...
-loop <int> .D...
ingenient demuxer AVOptions:
-framerate <string> .D...
m4v demuxer AVOptions:
-framerate <string> .D...
mjpeg demuxer AVOptions:
-framerate <string> .D...
mpegtsraw demuxer AVOptions:
-compute_pcr <int> .D... Compute exact PCR for each transport stream packet.
mpegvideo demuxer AVOptions:
-framerate <string> .D...
alaw demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
mulaw demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
f64be demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
f64le demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
f32be demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
f32le demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
s32be demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...
s32le demuxer AVOptions:
-sample_rate <int> .D...
-channels <int> .D...