Thanks for your response. I exported to my external drive originally and that’s where I noticed the problem. I brought in back onto my internal hard driveI to play-no luck, and also tried exporting to my internal hard drive as a QT as well. Since the stutter is consistently in the same places on the video, it makes me think that the problem is the way that the footage is being handled, or the way the dissolves are somehow treating the footage. But since it doesn’t always happen on a dissolve, it makes me wonder…