I'm using Premiere 6.5, and have a strange sound sync problem. When I add video effects to a clip and then render the work area, the audio shifts 3 frames out of sync. If I export a clip or project to an avi file, this same shift happens. It only affects portions of the edited project, though all the clips are from the same camera, same settings, etc. I can find no correlation to between clips that hold sync and those that shift. I've tried toggling sync mode (desperation), but that doesn't help.
Anyone else experience this?
All clips are PAL, all audio is 48kHz. All settings match.