There are shortcuts too, -map 0:v selects all the video type streams as -map 0:a does for audio type streams. Processing what you mapped is done sequentially, -map 0:0 is the video stream and was my first map so once I had finished mapping the first action was going to be run on this video stream. Keeping only the video, English audio and subtitles however encode the video (fast crf 25): ffmpeg -i inputfile.mkv -map 0:0 -map 0:1 -map 0:2 -c:v libx264 -preset fast -crf 25 -c:a copy -c:s copy english-output.mp4 Making a French only audio copy with: ffmpeg -i inputfile.mkv -map 0:3 french-audio.mp3 Ī simple FFmpeg map example to create an audio only and then a video only copy from the input: ffmpeg -i inputfile.mkv -map 0:1 audio.mp3 -map 0:0 video.mp4īecause Stream #0:1 is the audio stream and #0:0 is the video stream. You will see (depending on your input file) multiple streams, they look like: Stream #0:0: Video: hevc. Run ffmpeg -i inputfile to see all the information about the media. Video usually has different streams for quality when it is a live stream. FFMPEG MAP INPUT TO NAMW MOVIEStreams means video, audio, subtitles, attachments and data within the file this is rather complex on movie files where there could be multiple audio streams for different languages and the same for subtitles. rc-lookahead E.V.Map in FFmpeg can be best understood as selecting streams within a file you want to encode, keep or remove when creating an output. Strength of psychovisual optimization, in : format. Reduces blocking and blurring in flat and textured areas. Auto-variance AQ with bias to dark scenes Auto-variance AQĪutovariance-biased 3 E.V. Variance AQ (complexity mask)Īutovariance 2 E.V. AQ method (from -1 to INT_MAX) (default -1) Constant quantization parameter rate control method (from -1 to INT_MAX) (default -1) In CRF mode, prevents VBV from lowering quality beyond this point. Select the quality for constant quality mode (from -1 to FLT_MAX) (default -1) Use A53 Closed Captions (if available) (default true) Use fast settings when encoding first pass (default true) Supported pixel formats: yuv420p yuvj420p yuv422p yuvj422p yuv444p yuvj444p nv12 nv16 nv21 :~/ffmpeg-source/ffmpeg$ ffmpeg -h encoder=libx264Įncoder libx264 : See man ffmpeg for detailed description of the options. h type=name - print all options for the named decoder/encoder/demuxer/muxer/filter/bsf/protocol FFMPEG MAP INPUT TO NAMW FULLh full - print all options (including all format and codec specific options, very long) ffmpeg -i input.mp4 -i subtitles.srt -map 0:v -map 0:a -map 1:s -c:a copy -c:v copy -c:s movtext output.mp4 -y I hope it helps you, it worked for me. :~/ffmpeg-source/ffmpeg$ ffmpeg -helpįfmpeg version N-106797-g580fb6a8c9 Copyright (c) 2000-2022 the FFmpeg developersīuilt with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)Ĭonfiguration: -prefix=/home/chy-cpabe/ffmpeg_build -pkg-config-flags=-static -extra-cflags=-I/home/chy-cpabe/ffmpeg_build/include -extra-ldflags=-L/home/chy-cpabe/ffmpeg_build/lib -extra-libs='-lpthread -lm' -ld=g++ -bindir=/home/chy-cpabe/bin -enable-gpl -enable-gnutls -enable-libass -enable-libfdk-aac -enable-libfreetype -enable-libmp3lame -enable-libopus -enable-libsvtav1 -enable-libdav1d -enable-libvorbis -enable-libvpx -enable-libx264 -enable-libx265 -enable-nonfree ffmpeg -i input.mp4 -i subtitles.srt -map 0:v -map 0:a -map 1:s -acodec copy -vcodec copy -scodec movtext output.mp4 -y or.
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