Multiple random dropouts during render

AGB Productions wrote on 5/10/2015, 6:05 PM

We have two high-end Kanai workstations running Windows 7 and Vegas Pro 13. These are usually 90 minute concerts, shot with multiple Canon Vixia cameras (1920 x1080) and supplemented by separate audio streams from many Zoom H1/H4n microphones, preconditioned in SoundForge and mixed in Vegas.
We are trying to render these to DVD Architect to deliver in wide-screen format (720 x 480)
When we render these out in 1920 x 1080 to an intermediate *.avi or *.m2t for purposes of adding titles and certain effects, we see multiple video dropouts (black spaces or "flashbulb"-like frames). This occurs regardless of the workstation or render format used.
Does a utility or script exist to find and correct these? These consume hours of unnecessary work.
Or are we getting our rendering settings confused, and a simple change would solve the problem?
Thanks in advance ...

Comments

JohnnyRoy wrote on 5/10/2015, 6:18 PM

It sounds like it might be GPU related. I had random black frames on my renders and I disabled GPU Acceleration (Options | Preferences | Video | GPU Acceleration OFF) and the random black frames stopped. It's worth a try.

~jr

AGB Productions wrote on 5/10/2015, 6:49 PM

Will Try it. Thanks.

AGB Productions wrote on 5/17/2015, 10:51 PM

Thanks, folks, that did the trick. It was a tradeoff: renders take a little longer, but the end result was shorter (less searching for and correcting dropouts). And I guess our customers like the result so far: no complaints.

I'm wondering if this is a NVidia vs. Vegas issue. But I will look at that much later when I have the time. Right now it works for us. Thanks again.

frederick-wise wrote on 5/18/2015, 3:18 PM

I was having similar video "blips" here an there and turning off the acceleration has seemed to do the trick. But I had just done a few big projects with it "on" and there were no errors. I think maybe the constant barrage of Windows updates may have made it start to blip. Who knows, just when you think you have it working smoothly it goes haywire...frustrating.