Can't open some .mov files
When I double click the icon for any of the problem .mov files in the Finder, Snow Leopard tries to open them with QuickTime Player 7, which is the program the movies originally were saved in. In desperation, I’ve tried unsuccessfully to open and/or convert three of the problem files with a variety of video editing applications, including: File Juicer, iSkysoft Video Converter, iSquint, Prism, and MacTheRipper. Nothing can either open or convert them. Attempts at conversion hang the application(s).
The Get Info window identifies all three files as QuickTime movies with the following Codecs: Sorenson Video 3, ACC, and Sprite. Curiously, the Preview section of the Get Info window is able to play one of these movies just fine, but the other two play in this window only as black boxes.
While my searches on the web, Apple’s support site, and this forum have found many problems where QuickTime is unable to open .mov files, none of these problems appear to be like the one I’m having. I’m at a loss at this point and would appreciate any suggestions that might be implemented by a mid-level user like myself.
MacBook4,1, Mac OS X (10.6), Intel Core 2 Duo