Provided by: mythtv-common_31.0+fixes.20200323.9579662cdc-0ubuntu1_amd64 
NAME
mythffmpeg - MythTV FFMpeg helper
DESCRIPTION
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-7ubuntu1) configuration: --arch=x86 --sysinclude=/usr/include
--cc='ccache gcc' --cxx='ccache g++' --ld=gcc --cpu=generic --target_os=linux
--pkg_config=pkg-config --prefix=/usr --libdir=/usr/lib --as=gcc --objcc=gcc --dep_cc=gcc
--host_cc=gcc --host_ld=gcc --disable-cross-compile --enable-libmp3lame --enable-libx264
--disable-libx265 --enable-libvpx --disable-libxvid --enable-vdpau --enable-libxml2
--enable-libass --disable-dxva2 --enable-libbluray --disable-libfontconfig --disable-libfreetype
--disable-libiec61883 --disable-crystalhd --enable-sdl2 --enable-ffplay --enable-vaapi
--extra-cflags=' -w' --extra-ldflags= --enable-stripping --strip='echo skipping strip'
--disable-manpages --disable-podpages --disable-doc --disable-nvenc --enable-shared
--disable-static --enable-gpl --enable-pic --disable-demuxer=mpegtsraw --disable-indev=dshow
libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58.
29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100 libswresample 3. 5.100 / 3. 5.100 libpostproc 55.
5.100 / 55. 5.100
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/bsf
See man ffmpeg for detailed description of the options.
Print help / information / capabilities: -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 -sources device list
sources of the input device -sinks device list sinks of the output device -hwaccels show
available HW acceleration methods
Global options (affect 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 -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 maximum error rate ratio of errors (0.0: no
errors, 1.0: 100% errors) above which ffmpeg returns an error instead of success. -bits_per_raw_sample
number set the number of bits per raw sample -vol volume change audio volume (256=normal)
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
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
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
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