This is a really important, but very frustrating topic for me. I have hundreds of gigabytes of Divx encoded AVI files. I use Quicktime with 3ivx or MPlayer or VLC to play them with no problem. But if I want to do any simple editing (cropping or trimming), I have to go to the PC and use VirtualDub. Because if I use Quicktime or any other tool I've found for the Mac, I am forced to choose a codec and re-encode as the file is saved. For a 90 minute Divx file, this process may take 5 hours and introduce more artifacts and noise. Using VirtualDub, I can cut/crop/trim and simply resave the file without doing any recompression at all. And it only takes 2 minutes instead of hours.
Is there anything...anything at all that I should know about that could solve my problem?
Please, this is a dreadfully needed application on the Mac...
/dale