Adding Transitions freezes and stutters playback in Preview.
This begins to happen as SOON as I add a transition. Whether I add it automatically, or manually.
The clips play fine without transitions in the project and the Event window. These are clips from a Kodak Zi6, I believe shot HD at 60fps, and I'm using NTSC 30fps to create the project. When I "get info" on my clips, the codecs listed are H.264 and AAC, dimensions 1280x720.
When the Movie Project is exported & viewed in QuickTime, it plays smoothly.
Any ideas are greatly appreciated, as I'd like to preview my work as I go!
This movie is LESS than one minute long!
IMac 3.06 4GG, 1TB, Mac OS X (10.5.6), Kodak Zi6, Casio EXZ850