Apple Computer, Inc released on Tuesday QuickTime 7.1.3 update. According to Apple, this update fixes numerous bugs and critical security holes. This upgrade will be required to play the contents that are newly available at iTunes store because of FairPlay, which decodes Apple’s copy protection restrictions. Furthermore, Apple notes that QuickTime 5 and 6 Pro users are required to purchase a new QuickTime 7 Pro key to use QuickTime Pro functions.
Some people don’t read old posts and ask basic questions at Apple’s Discussion Board although they’ve been discussed over and over. One of the problems that many of these people have with QuickTime 7.1.3 is that there is sound but no video with white screen. One person writes that XviD codec no longer allows him to plays back video with QuickTime 7.1.3. That’s not a correct statement because XviD codec (compression) only allows you to compress video, and decoding XviD video does not require a specific codec.
A solution to no video problem with QuickTime 7.1.3 is to remove all third-party codecs. And add one by one. The most likely candidate causing the problem is ‘3ivx D4 4.5.1 for OSX.’ Other likely candidates are Flip4Mac and DivX 6.
Anyhow, if you are trying to play back AVI video with QuickTime, think twice. AVI (Audio, Video Interleave) is the format that Microsoft created. Especially, trying to play H.264 video contained in AVI is a bad idea. QuickTime is not the best application to play AVI files. Use VLC from Video LAN, instead.