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Map – FFmpeg
https://trac.ffmpeg.org/wiki/Map
The -map option is used to choose which streams from the input(s) should be included in the output(s). The -map option can also be used to exclude specific streams with negative mapping. The commands in the diagram above will select the video from input0.mp4 and the 3rd audio stream from input1.mkv to output.mp4. T…
audio mapping in ffmpeg - Stack Overflow
https://stackoverflow.com/questions/37578639/audio-mapping-in-ffmpeg
I have a video file with audio in only one channel, left. I'd like to use the ffmpeg -map_channel option to map that audio so that it appears in both the L&R channels. what would the ffmpeg command for that look like? ffmpeg -i INPUT.mov -c:v copy -c:a copy -map_channel 0.1.0 -map_channel 0.1.0 OUTPUT.mov isn't working.
Understanding FFmpeg map with examples
https://write.corbpie.com/understanding-ffmpeg-map-with-examples/
Map in FFmpeg can be best understood as selecting streams within a file you want to encode, keep or remove when creating an output.-map is the command.. Streams 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.
ffmpeg Documentation
https://ffmpeg.org/ffmpeg.html
There are three output files specified, and for the first two, no -map options are set, so ffmpeg will select streams for these two files automatically.. out1.mkv is a Matroska container file and accepts video, audio and subtitle streams, so ffmpeg will try to select one of each type. For video, it will select stream 0 from B.mp4, which has the highest resolution among all the …
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