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Is there some program that can record the desktop, as well as multiple audio channels? I need to keep the audio channels split, so I can later individually mute them and edit them when I need to.
If there is no such application available for Linux, I guess the only option would be to record the audio separately. Feel free to suggest audio recording applications able to record multiple channels too. I'd prefer to have just one application handling both video and audio though, as that prevents any potential syncing issues.
Thanks in advance!
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I think you'd have to use JACK, and appropriate output plugins for either ALSA or pulseaudio to separate audio from different applications.
Then use something like audacity to record each output to its own audio track.
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Presuming you have your audio devices configured as separate streams (be they jack, alsa or pulse) you can use ffmpeg via the command line to record desktop using the x11grab input source and then route as many audio tracks as you desire. Check the ffmpeg wiki for more. Googlefu applies. Let me know if you need help with more direct information.
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