When comparing Avidemux vs Pitivi, the Slant community recommends Pitivi for most people. In the question“What is the best free video editing software?” Pitivi is ranked 11th while Avidemux is ranked 12th. The most important reason people chose Pitivi is:
Being GTK based, it does not require extra dependencies on gnome and other desktop environments using the GTK Toolkit.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Fast, light, best option if you only need some light editing like cutting the video
Pro GTK based
Being GTK based, it does not require extra dependencies on gnome and other desktop environments using the GTK Toolkit.
Pro Free and open source
Pitivi uses CreativeCommons Attribution-Share Alike 3.0 Unported license with source code available on Gnome's source code page.
Pro Uses Gstreamer instead of ffmpeg
Cons
Con Can't edit multiple clips together
Only clip by clip editor.
Con Encoding and decoding is not hardware-accelerated
The feature is planned, but not yet implemented.
Con No way to modify the speed of a clip
The feature is planned, but not yet implemented.
Con Lacks proxy editing
The feature is planned, but not yet implemented.