Estel is correct that normally it would only require to do Assuming you have te right repositories enabled in /etc/apt/sources.list and that your packages list has been updated by running This doesn't work for me though, because the deb-multimedia.org repository has no avidemux armel binary for squeeze (I'm using Estel's image). And I also have the squeeze backports enabled.

Anybody successfully installed avidemux in squeeze? How did you do it?