movie joiners

Anyone know of a decent (preferably freeware) video joiner that can join videos of different bitrates? I wanted to join each season's episodes of Red vs Blue together so it's one long video instead of multiple files, but with not all the episodes being of the same bitrate, it's hard to find a program that can join them anyway and still have the video run smoothly. I used MediaJoin before and it worked fine joining the WMVs, but now for some reason it decided to stop working correctly.
I could never find a decent program that could join AVI files without screwing up the sound/video synchronization (I made sure the codecs and such matched, too). Anyone know of a video merger/joiner that can do both well (joining different bitrates, like RvB), or are there two different programs better at each? I tried other programs before, but I went through them so fast that I can hardly remember any of the names. I think one was MWV/MPEG/AVI Joiner or somesuch.
I'm not interested in MOV files (if anyone got the idea) simply because I'm not a big fan of the QuickTime player (unless there's a way to get Winamp to play MOV files, then I'll make it my default file association).
Thanks for any advice!

 

try this
http://forums.afterdawn.com/thread_view.cfm/318394

 

I have never ran across any program that would merge video files with differing bitrates.