[Rafael Von hertzen]

Hey,

This thread is so old that this problem probably isn’t relevant anymore but, I had the same problem recently and found a fix to it. Figured I’d post this to help anyone still using the old vegas 9, and has this problem. I tried literally everything to fix my video and found that the video wouldn’t render because I had a audio track set at -inf desibels so it would be unhearable. I lifted it to the next lowest amount which is -58db and it worked just fine. So if you have this problem and have an audio track at -inf then either delete the whole track or move its audio up to -58db which is practically unhearable.