I have imported 188 3D mvc clips with 5.1 AC3 audio. Playing from the timeline is ok. If I render to 5.1 PCM the first 20 minutes is OK but the rest of the file is silent. The file is the correct length. Please can anyone help.
What version of Vegas?
Vegas Pro 14. Sorry I should have said.
This sounds like it might be related to the memory-handing bug(s) in VP14. https://www.vegascreativesoftware.info/us/forum/vp-14-win10-out-of-memory-problem--103767/ What OS are you using? What happens if you watch the Resource Monitor while it renders? See my post on that thread to see what to look for.
Also, the rendered file.... Is it the correct length but just flatlined after the first 20 mins? Is it silent after 20 minutes in other players? Does the waveform preview show it silent too?
Yes. I tried other players. I imported the file back into Vegas and I could see that there was no sound after about 20 mins.
Just tried exporting as a dolby aac3 file but got same problem.
Does the waveform CUT out or FADE out?
The audio cuts out always on a clip boundary. The audio has not been modified in any way. I have found that I can render as 2 files by using the loop region. I can then join them together in Vegas Pro. It seems to have a limit on the number of clips in the track when rendering audio.
AFAIK there is no limit to clips. Can you post a screenshot of the timeline and a close up of the clip boundary you are talking about?