Toast Video Player

Just a quick note when trying to play some troublesome files, mainly older ones like SVCDs (mpgv) and so forth which may crash both QT7 and MPEG Streamclip and VLC likes to display scrambled and green; you may have a "hidden" video player (and converter) for these files with Toast. I'm not a huge fan of Toast overall but it has a handful of things that are helpful.

Go to your Toast icon, right click on it and select Show Package Contents then navigate to Contents>Resources>Toast Video Player and drag it to your Dock.

Bonus video player.

Also, don't forget that usually whatever Toast Video Player can play, Toast can convert to something useful.