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I'd like to make a screencast that records both mic (audio input) and system sounds (audio output) at the same time. For example, so that I can capture a screencast while talking to someone on Skype and capture both sides of the conversation. How can I do this? (I'm using Natty if it matters.)

So far I have tried Kazam, RecordMyDesktop and Tibesti. (Tibesti explicitly has this feature but it doesn't seem to work. Kazam has existing enhancement requests for this feature.)

Please provide complete instructions/options, like those given for running RecordMyDesktop from the command line in this generic screencasting answer.

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They all record the mic fine, so if there is some hack to pipe audio out into the mic input, that would be acceptable as a temporary workaround, and I will hope that whoever calls likes the sound of their own voice. –  d3vid Aug 17 '11 at 11:50
    
Another workaround would be a separate app that recorded system sounds that I could then splice into the screencast? –  d3vid Aug 17 '11 at 12:06

2 Answers 2

up vote 3 down vote accepted

Look for a way to combine sound channels instead of looking for multirecording screencast app. A method similar to the one described here may work: http://blog.flipzu.com/2011/02/how-to-mix-voice-and-audio-on-ubuntu.html (that's for PulseAudio, IIRC there are also similar in spirit tricks for JACK)

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thanks, this is exactly what I needed - this tutorial seems to be based on linux.com/learn/tutorials/… which describes more of the technical detail for those who are interested –  d3vid Oct 17 '11 at 5:38

Hope this is what you are looking for: http://www.youtube.com/watch?v=oWyfG4PVpms.

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  Stefano Palazzo Aug 25 '11 at 13:05
    
Alright. I'll keep that in mind next time around. –  rigved Sep 1 '11 at 13:01
    
@rigved I do not get the same options as the screencaster, could it be a hardware capability issue, or do I need to pick a specific sound profile? see askubuntu.com/questions/63533/… (created a separate question for the more specific issue) –  d3vid Oct 12 '11 at 6:02

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