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I want to record a screencast under Linux in such way that the sound of my microphone is recorded on a separate channel than the sound of my speakers. Is there any tool which can do such screencast?

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  • Do you want to use only one application or would two be ok? – totalynotanoob Oct 13 '20 at 17:04
  • I prefer using one application, but I can accept using two. – user983447 Oct 13 '20 at 17:04
  • what applications have you used so far? – totalynotanoob Oct 13 '20 at 17:07
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OBS-Studio - Open Broadcaster Software##

In OBS you can record pretty much any part of your screen or audio. You can choose options like window, screen etc for video and mic, speakers etc for audio.

By default these all go into the same channel but under Settings>Output you can choose advanced output mode which also allows for multiple audio channels. So you could choose 2 and set the channels accordingly.

Settings

right-click in Audio Mixer and choose 'Advanced Audio Properties'

enter image description here

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  • Thanks, this is the tool which I need! BTW, I think that the first of your two screenshots is wrong - it shows "streaming" tab, but in order to record a screencast one needs to use "recording" tab. – user983447 Oct 13 '20 at 18:03
  • thank you, I have changed it. – totalynotanoob Oct 13 '20 at 18:10

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