I've been using Sony Vegas Pro 10.0 for a while now, creating gaming videos with slow-motion and fast-motion, music etc.
Lately though, I've had a lot of issues with black screens appearing on seemingly completely random clips. Seeing as my videos are about 100 clips long, there's a very high chance of getting at least one black screen on one of them.
I'm rendering using Sony AVC (.mp4) with mostly the highest quality available. Because of this, rendering takes about an hour with my ~15m long video, and when you get a black screen in different clips on three renderings in a row, you tend to want to figure out the issue.
I would greatly appreciate if someone could shed some light on this issue for me.