I’m just wondering why it’s starting *now.* Like I said, I have edited dozens of hours (hundreds of clips) from this exact source without any issues in the past couple of years. It’s always looked and sounded great (I muted my example clip — the audio actually works fine).
But it’s very interesting that you were able to duplicate the glitch. That would seem to indicate that the problem is indeed in the source files themselves.
Closing and reopening Vegas hasn’t helped. I’ve done it at least twenty times in the past few days.
What does seem to help, however, is moving the offending clips to a separate video track and changing the compositing mode to “screen.” I’ll have to do some more experimentation.
Thanks again.