[OT] rather advanced video editing question

[Petrus de Calguarium]

Suvayu Ali wrote:

> to the best of my knowledge you need to install
> the codecs for avidemux to work properly

It would be nice to know which codecs and from where. I have all of the 
gstreamer codecs from fedora and rpmfusion, and also have the xine-extras 
package from rpmfusion, as well as having ffmpeg, mencoder and friends 
installed.

What further codecs could I need that I don't already have?