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I am using gtk-recordmydesktop to record the video output to my desktop. However, the videos have no sound. All the tutorials I found regarding this involved getting sound recorded from a microphone, while I am interested in getting the sound output recorded. How can I do this? The official FAQ says "The solution is in your mixer's settings. Keep playing with it ;)." which doesn't clarify anything.

How can I get the sound output recorded, while being able to hear it myself also?

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3 Answers

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I managed to get it going with the steps on the Ubuntu Forums, for clarity here is what I did:

  1. sudo apt-get install gtk-recordmydesktop pavucontrol
  2. Opened the Pulse Audio Volume Control dialog: Applications > Sound & Video > PulseAudio Volume Control
  3. Opened gtk-recordmydesktop
  4. In gtk-rmd start a recording
  5. In Volume Control goto the Recording tab and change the recordmydesktop entry to 'Monitor of '

This is what seems to have worked for me.

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Note: with the 'Monitor of' setting, it should be a carbon copy and you will be able to hear the same audio through headphones etc. – N J Nov 12 '10 at 11:09
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This worked. FWIW, I had to change the Sound > Device option from DEFAULT to pulse in gtk-recordmydesktop, though that could just be the way Arch was set up beforehand to have a different default. – Macha Nov 13 '10 at 14:18
@Macha on the command line, this corresponds to passing "--device pulse" – g33kz0r Mar 20 '12 at 21:03
up vote 4 down vote

If you use Pulseaudio, there is a howto in the Ubuntu Wiki. It basically boils down to using the pulse audio mixer, to re-route the sound from its source to audacity where it is saved instead of the default output (which would be you speakers).

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Sadly, this sounds like it means I can't hear the sound myself, which isn't good enough. – Macha Oct 25 '10 at 17:55
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@Macha: In principle, I think Pulseaudio is capable of replicating output on several ports. Did you find no way of doing this? Otherwise, a workaround that may or may not be acceptable is to play the sound file as it gets recorded (this may introduce unacceptable latency, and you'll probably have to record to a raw (uncompressed) format). – Gilles Nov 8 '10 at 21:24
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@Gilles: Ok, thanks. My bad. The tutorial actually said that, but the way the answer was worded implied otherwise. There is one last problem: This way requires me to manually sync the sound as gtk-recordmydesktop and audacity are started seperately. – Macha Nov 9 '10 at 19:20
up vote 2 down vote

All I had to do was change DEFAULT to pulse in by: Advanced button > Sound tab > Device:.

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