recordMyDesktop is a screencasting software for X. It can record audio through ALSA, OSS or the JACK audio server. It is able capture through jack and thus is important for video tutorials. recordMyDesktop only outputs to Ogg using Theora for video and Vorbis for audio.
The basic usage is simple and a man page () is provided. Here is a simple example using jack for audio capture:
$ recordmydesktop --use-jack system:capture_1
Current versions behave weird and need strange parameters to work properly. Here is an example that should help achieve non-choppy capture:
$ recordmydesktop --use-jack system:capture_1 --v_bitrate 2000000
Audio record is lagging
If it appears that you have lags (error message when starting from the shell:
Broken pipe: Overrun occurred) in your audio record (often with Intel onboard cards) then it might help to change the audio device. This can be done in two ways.
- Assuming that the terminal version is used then recordmydesktop should be started with:
$ recordmydesktop --device plughw:0,0
- If a GUI is used then you can change the device from
plughw:0,0in the audio tab of the settings.
More information on this issue can be found in this blog post.
Audio record lags and is out of sync
plughw:0,0 device as described above may work partially for some Intel cards. You might try:
$ recordmydesktop --device plughw:0,0 --freq 22050 --channels 2
It seems the trick was to specify the correct number of channels generated by the input source (in this case, a stereo mic).
Audio record is distorted (slower/graver)
This happens at least with Rode Podcaster USB Microphone, and can be fixed by setting the frequency to
$ recordmydesktop --device plughw:2,0 --freq 45000 --channels 2
No sound with PulseAudio
This is pretty simple, but should be better explained. If recordmydesktop exits like this:
Couldn't open PCM device hw:0,0 Error while opening/configuring soundcard hw:0,0 Try running with the --no-sound or specify a correct device.
Install the packageand then run it like:
$ recordmydesktop --device pulse