Detailed description of ffmpeg Chinese parameters

FFMPEG 3.4.1 version parameter details

Usage: ffmpeg [options] [[infile options] -i infile] … {[outfile options] outfile} …

FFMPEG get help:

-h - Print basic options
-h long - print more options
-h full - print all options (includes all format and codec specific options, very long)
-h type=name - print all options for the specified decoder/encoder/demuxer/muxer/filter See man ffmpeg for a detailed description of the options.

Print help/information/functions :

-L show license
-h topic display help
- ? Topic Display Help
-help topic display help
--help topic show help
-version shows the version
-buildconf show build configuration
-formats displays available formats
-muxers Display available multiplexers
-demuxers Show available demuxers
-devices displays available devices
-codecs shows available codecs
-decoders show available decoders
-encoders shows available encoders
-bsfs show available bitstream filters
- Protocols displays the available protocols
-filters displays available filters
-pix_fmts shows available pixel formats
-layouts displays standard channel layouts
-sample_fmts Display available audio sample formats
-colors displays the available color names
-sources devices List the sources of input devices
-sinks devices list the sinks for output devices
-hwaccels displays available hardware acceleration methods

Global options (affect the whole program not just one file):

-loglevel loglevel sets the logging level
-v loglevel Set the logging level
-report Generate report
-max_alloc bytes sets the maximum size of a single allocated block
-y Overwrite output file
-n Never overwrite output files
-ignore_unknown Ignore unknown stream types
-filter_threads Number of non-complex filter threads
-filter_complex_threads -Number of filter_complex threads
-stats prints progress reports during encoding
-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 bits per raw sample
-vol volume change volume (256 = normal)

The main options for each file are:

-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 audio/video for "duration" seconds
-to time_stop recording or transcoding stop time
-fs limit_size sets the limit file size (in bytes)
-ss time_off sets the start time offset
-sseof time_off sets the start time offset relative to EOF
-seek_timestamp Use -ss to enable/disable timestamp seeking
-timestamp time sets the recording timestamp ('now' sets the current time)
-metadata string=string add metadata
-program title=string:st=number ... Add a program with the specified stream
-target type Specify the target file type ("vcd", "svcd", "dvd", "dv", or "dv50" with optional prefix "pal-", "ntsc-", or "film-")
-apad audio pad
-frames number sets the number of frames to be output
-filter filter_graph set stream filtergraph
-filter_script filename Read stream filter description from file
-reinit_filter restarts filtergraph on input parameter changes
-discard discard
-disposition configuration

FFMPEG video options:

-vframes number sets the number of video frames to be output
-r rate Set frame rate (Hz value, fraction or abbreviation)
-s size Set frame size (WxH or abbreviation)
- Set aspect ratio (4:3, 16:9 or 1.3333, 1.77777)
-bits_per_raw_sample number sets the number of bits per raw sample
-vn disable video
-vcodec codec Force video codec ('copy' copies the stream)
-timecode hh:mm:ss[:;. ] ffSet the initial TimeCode value.
-pass n select pass number (1 to 3)
-vf filter_graph Set the video filter
-ab bitrate audio bitrate (please use -b:a)
-b bitrate Video bitrate (please use -b:v)
-dn disable data

FFMPEG audio options:

-frames number sets the number of audio frames to be output
-aq quality Set audio quality (codec specific)
-ar rate set audio sampling rate (Hz)
-ac channels Set the number of audio channels
- Disable Audio
-acodec codec Force audio codec ('copy' to copy stream)
-vol volume change volume (256 = normal)
-af filter_graph Set the audio filter

FFMPEG subtitle options:

-s size Set frame size (WxH or abbreviation)
-sn disable subtitles
-scodec codec Force subtitles codec ('copy' copies the stream)
-stag fourcc / tag subtitle tag / fourcc
-fix_sub_duration fix subtitle duration
-canvas_size size Set the canvas size (WxH or abbreviation)
-spre preset Set subtitle options to the indicated preset