When attempting to open a QuickTime movie larger than 3.9 GB that was created in iMovie 2.0 or 2.0.1, QuickTime Player displays a dialog box with an error message stating:
Solution
Export the movie from iMovie with increased compression settings, so that the movie's file size is 3.9 GB or smaller. Follow these steps to change compression settings:
2. Choose QuickTime from the Export pop-up menu.
3. Choose Expert from the Format pop-up menu; the Expert QuickTime Settings dialog box appears.
4. Click one of the Settings buttons to change video compression settings; click the other Settings button to change audio compression settings.