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How can I extract audio from video with ffmpeg? - Stack ...
https://stackoverflow.com/questions/9913032/how-can-i-extract-audio-from-video-with-ffmpeg#:~:text=To%20extract%20the%20audio%20stream%20without%20re-encoding%3A%20ffmpeg,-vn%20-acodec%20copy%20output-audio.aac%20-vn%20is%20no%20video.
No audio encoded with ffmpeg using webm/libvorbis - …
https://stackoverflow.com/questions/15421819/no-audio-encoded-with-ffmpeg-using-webm-libvorbis
Encoding these files to MP4 using x264 causes no problems and works just fine and the audio plays, so it appears to be an issue just with webm. As you can see below, it is a 2-pass encode. Thanks for any help you can provide!
FFmpeg Codecs Documentation
https://ffmpeg.org/ffmpeg-codecs.html
Options may be set by specifying - option value in the FFmpeg tools, or by setting the value explicitly in the AVCodecContext options or using the libavutil/opt.h API for programmatic use. The list of supported options follow: b integer (encoding,audio,video) Set bitrate in bits/s. Default value is 200K. ab integer (encoding,audio)
How to Remove Audio from Video using FFmpeg ... - …
https://ottverse.com/add-remove-extract-audio-from-video-using-ffmpeg/
This is done using the -acodec copy command that tells FFmpeg to only copy the audio and not re-encode it. ffmpeg -i videoWithAudio.mp4 -vn -acodec copy onlyAudio.aac Simple, right? Now, let’s take a different use case where you might want to re-encode the audio after extracting it.
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