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  • ffmpeg

    ffmpeg version git-2020-04-03-52523b6 Copyright (c) 2000-2020 the FFmpeg developers
    built with gcc 9.3.1 (GCC) 20200328
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom
    --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    libavutil 56. 42.102 / 56. 42.102
    libavcodec 58. 77.101 / 58. 77.101
    libavformat 58. 42.100 / 58. 42.100
    libavdevice 58. 9.103 / 58. 9.103
    libavfilter 7. 77.101 / 7. 77.101
    libswscale 5. 6.101 / 5. 6.101
    libswresample 3. 6.100 / 3. 6.100
    libpostproc 55. 6.100 / 55. 6.100
    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/protocol
    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

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  • 原文地址:https://www.cnblogs.com/whoic/p/12745304.html
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