Shulou(Shulou.com)06/02 Report--

Detailed description of parameters of FFMPEG version 3.4.1

Usage: ffmpeg [options] [[infile options]-I infile]... {[outfile options] outfile}...

FFMPEG gets help:

-h-print basic options

-h long-print more options

-h full-print all options (including all formatting and codec specific options, very long)

-h type = name-print all options for the specified decoder / encoder / demultiplexer / muxer / filter

For a detailed description of the options, see man ffmpeg.

Print help / information / features:

-L display license

-h topic display help

-? Topic display help

-help topic display help

-- help topic display help

-version display version

-buildconf displays the build configuration

-formats display available format

-muxers displays available multiplexers

-demuxers shows available demultiplexers

-devices displays available devices

-codecs shows available codecs

-decoders shows available decoders

-encoders shows available encoders

-bsfs displays available bitstream filters

-protocols show available protocols

-filters displays available filters

-pix_fmts displays available pixel formats

-layouts displays standard channel layout

-sample_fmts displays available audio sample formats

-colors displays available color names

-sources device lists the source of the input device

-receiver of the sinks device list output device

-hardware acceleration methods available for hwaccels display

Global options (affect the entire program, not just one file:

-loglevel loglevel sets logging level

-v loglevel sets logging level

-report generates a report

-max_alloc bytes sets the maximum size of a single allocated block

-y overwrite the output file

-n will never overwrite the output file

-ignore_unknown ignores unknown stream types

-number of filter_threads non-complex filter threads

-filter_complex_threads-number of threads in filter_complex

-stats prints progress reports during coding

-max_error_rate error rate (0. 0: no error, 1.0 100% error maximum error rate

-bits_per_raw_sample number sets the number of digits for each original sample

-vol Volume change Volume (256 = normal)

The main options for each file:

-f fmt force format

-C Codec codec name

-codec name

-pre preset preset name

-map_metadata outfile [, metadata]: infile [, metadata] sets the metadata information from the outfile of infile

-t duration recording or transcoding the "duration" seconds of audio / video

-to time_stop recording or transcoding stop time

-fs limit_size setting limits file size (in bytes)

-ss time_off sets the start time offset

-sseof time_off sets the start time offset from EOF

-seek_timestamp uses-ss to enable / disable timestamp search

-timestamp time sets recording timestamp ('now' sets current time)

-metadata string = string add metadata

-program title = string:st = number... Add a program with the specified stream

-target type specifies the target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with the optional prefix "pal-", "ntsc-" or "film-")

-apad audio mat

-frames number sets the number of frames to output

-filter filter_graph set stream filtergraph

-filter_script filename reads the stream filter description from the file

-reinit_filter restarts filtergraph with input parameter changes

-discard discard

-disposition configuration

FFMPEG video options:

-vframes number sets the number of video frames to be output

-r rate sets the frame rate (Hz value, fraction or abbreviation)

-s size sets the frame size (WxH or abbreviation)

-aspect setting aspect ratio (4glaze 3pr 16vir 9 or 1.333pr 1.77777)

-bits_per_raw_sample number sets the number of digits for each original sample

-vn disables video

-vcodec codec enforces video codec ('copy' replication stream)

-timecode hh:mm:ss [:;] Ff sets the initial timecode value.

-pass n Select the pass number (1 to 3)

-vf filter_graph sets video filter

-ab bit rate Audio bit rate (please use-bvision a)

-b bit rate video bit rate (please use-bbank v)

-dn disable data

FFMPEG Audio options:

-frames number sets the number of audio frames to output

-aq quality setting audio quality (codec specific)

-ar rate set audio sampling rate (Hz)

-ac channel sets the number of audio channels

-disable audio

-acodec codec enforces audio codec ('copy' to copy stream)

-vol Volume change Volume (256 = normal)

-af filter_graph sets audio filter

FFMPEG subtitle options:

-s size sets the frame size (WxH or abbreviation)

-sn disable subtitles

-scodec codec enforces subtitle codecs ('copy' replication stream)

-stag fourcc / tag Force subtitle tag / fourcc

-fix_sub_duration repair subtitle duration

-canvas_size size sets the canvas size (WxH or abbreviation)

-spre preset sets the subtitle option to the indicated preset

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