If you have already created a project with 12-bit audio, you may be able to export the project to QuickTime as follows:ġ. Check the manual that came with your DV camcorder to find out how to se the audio format. Recording with 12-bit audio may result in a gradual loss of audio-video synchronization. When exporting an iMovie project to QuickTime or iDVD, audio and video gradually lose synchronization.įor best results when creating long movies (over 20 minutes), record footage using 16-bit audio. IMovie 2: Audio and Video Lose Synchronization When Exported to QuickTime or iDVDĬreating iMovie projects with DV footage that uses 12-bit audio may cause a gradual loss of audio/video synchronization when the project is exported to QuickTime or iDVD.