Hi, I'm running Vegas Pro 15.0 build 387. I'm having a very large audio to video syncing issue. I dropped my footage into the timeline (footage is 22 mins) and the video seems to run increasingly behind the audio, until a 2-3 second gap is reached, which is when the desync ceases to increase (or at least, that's what it looks like to me. The desync might just keep increasing). The original mp4 does not have this problem, and the neither the audio nor the video appear larger on the timeline.