What's wrong with my Quicktime (screen grab included)

this just started happening a couple of weeks ago. not sure if i updated my quicktime and it started happening, or it just started happening on my own. i currently have QT Pro ver: 7.5.5 and use Flip4Mac ver: 2.2.1.11. my OS is: 10.5.5.

happens on AVIs, on some MOVs and not others, MP4s seem ok....

i tried, deleting QT and then reinstalling... same thing.

any thoughts or suggestions??
thanks.
curtis.

Wow that's gnarly. Have you tried playing your movies with another application besides Quicktime? Does it do the same thing?

i have, they were all playing fine in VLC... would rather use quicktime as i can open and view more than one at a time. BUT, now its happening to AVIs in VLC too.