Help with creation, editing, or playback of sounds, images, or video. Amarok, audacious, mplayer, grip, cdparanoia and anything else that makes a sound or plays a video.
Well... are there any?... I mean... the working ones. There's quite a lot of them for Windows, i guess Linux has some too, I just didn't have any luck finding one so far.... right?
Well, I'm really sorry I don't know a real GUI for that task, but I would suggest mplayer's mencoder (command line) anyway because I'm quite sure you can get more out of this than with any GUI. The usage is totally straightforward too, so you will easily be able to handle it. For example, if you want to rip a DVD:
media-video/dvdrip
You have to understand how it works. Then it works fine and has a gui.
I'm sure you have missed something for avidemux. They are both not easy.