[FallN]

Like most of you, I updated iTunes & Quicktime to the latest version (7.1) just two days ago. All seemed well until I tried to play my iTunes TV Shows and Movies. Videos that had worked perfectly before the upgrade are now almost like slideshows: choppy, skipping frames, sometimes stalling completely.

I have done absolutely NOTHING to my system or the iTunes videos/movies EXCEPT update iTunes/Quicktime through the Mac's System Update utility so I KNOW it's the update that screwed my Mac!

I tried uninstalling both iTunes and Quciktime, restarting then installing an older version of iTunes from my OS X DVD but when I went to open my iTunes library I get an error message stating that it can't open it because my library was made with "a newer version of iTunes". Grrr! WTF?

I'm so pissed right now. I literally sunk a LOT of money into PAID iTunes Videos & Movies which are now basically unwatchable with this version of iTunes/Quicktime on my Mac.

Does anyone have the last version of iTunes & Quicktime BEFORE the most recent update? Is there any way to get my iTunes videos & movies to play correctly like they used to before the update? Help??

[bernt]

Have you tried any kind of troubleshooting? Removing prefs, rebuilding library, new user etc? What happens if you play the media in QT player?

[FallN]

Yes, I've tried tinkering with preferrences. I have no idea how to rebuild the library and would actually like to rebuild it for an older version of iTunes that I know was working fine. Does anyone know how?

Lastly, if I have QT play the video/movie I end up with the same choppy, slideshow-like results. Apple did something to this new update that threw things out of wack for me.

[bernt]

Here's a link to rebuilding the library: How to recreate your iTunes Library. But because you have the same problem playing with QT player, I would say rebuilding the iTunes library is just a waste of time.

I would recommend to create a new user to verify if there is any of you user-specific files that screw things up. If still not working you could check out the QT plugins in /Library/Quicktime. Might be an incompatibility issue there. Furthermore, and archive and install could be considered.