Vegas 12 memory leak while capturing live

j_stroming wrote on 11/2/2013, 12:46 AM

Hello,

I downloaded the trial for Vegas 12, and am capturing MXF via a Blackmagic ultrastudio SDI. I am capturing to a brand new HP 8770w w/ 8GB ram. The issue I am having is the physical memory used by vegas continually builds, and then drops a frame when the memory maxes out. It maxes out after only 7-8 minutes. Any suggestions? Thanks.

Comments

ChrisDolan (SCS) wrote on 11/4/2013, 10:06 AM

I'm guessing you're capturing SD MXF? We've heard of this problem with a couple other customers, but very rarely and we're unable to reproduce it in house to date. The best workaround we've found so far is to instead capture as MXF HD and then either transcode or let Vegas downsample to SD. Another solution is to increase the RAM buffer size in the capture settings, but that just postpones the failure rather than solving it. Yet another solution is to

The capture is supposed to drop MPEG-2 encoding quality instead of falling behind while capturing, but some systems seem not to detect that they're falling behind and so the captured raw frames queue up in RAM faster than they are written to disk. We don't know the cause yet, but I'll update this thread if I find it...

If you can try changing the MPEG quality settings manually in the capture settings, I'd be grateful to hear if that makes a difference for you.

Chienworks wrote on 11/4/2013, 1:03 PM

For whatever it's worth, i have the same problem capturing plain old SD DV. Sometimes i leave VidCap open for weeks on end, and it's memory usage keeps going up a bit every time a capture finishes. After a while it's using almost all of my 2G RAM and i have to restart it. I've had this problem with the version that ships with Vegases 6-10, though i haven't tried any newer versions. I don't recall the Vegas 5 version of VidCap having this problem.

Admittedly it's not as bad as the MXF capture leak, but it is still there.