RecordMyDesktop
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 pro-audio video tutorials. recordMyDesktop only outputs to Ogg using Theora for video and Vorbis for audio.
Installation
Install the recordmydesktop package. A GUI is available: gtk-recordmydesktopAUR.
Usage
The basic usage is simple and a man page (recordmydesktop(1)) is provided. Here is a simple example using jack for audio capture:
$ recordmydesktop --use-jack system:capture_1
Troubleshooting
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
DEFAULT
toplughw:0,0
in 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
Using the 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 45000
:
$ 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 package alsa-plugins and then run it like:
$ recordmydesktop --device pulse