Recording a window using the –windowid option, doesn’t track the window itself, but the region that it covers. Also when using that option the -x,-y,–width and –height options are relative to the specified window area. An easy way to find out the id of a window, is by using the xwininfo program. Running a command like : xwininfo | awk ´/Window id:/ {print $4}´ will give you only the id of the window(which should look like this: 0x4800005) More conviniently you can put all that in the command that launches recordMyDesktop like this: ~$recordmydesktop –windowid $(xwininfo | awk ´/Window id:/ {print $4}´) Also, the lower quality you select on a video recording ( -v_quality option), the highest CPU-power that you will need. So if you are doing the encoding on the fly ,it’s better to start with default values and manipulate the end-result with another program. An excellent converter is the vlc media player, which can perform a variety of transcoding operations, either using the graphical interface, or the commandline for more flexibility. vlc is a complex piece of software, so you should consult it’s documentation, before using it. An example follows, which will resize a recording named out.ogv to 512×384:
Mar 112013