added 2 audio tracks, now render crashes and "low on memory"

Mindmatter wrote on 3/29/2019, 5:37 PM

Hi all,

I'm in the final stage of my latest compositing project. It's a multi tracked, FX heavy 5 min timeline with at times 5-6 layers of compositing, luma key video and FX, so rather demanding on the processing. It's at a point where Vegas just chokes its way through, even at " draft auto", which is honestly not workable anymore, I actually have to render the project to check on the details.

The renders used to be OK, unless RAM wasn't at zero ( as documented in my other post), they took about 65 min.

I now added 2 audio tracks and rendered again, and the system goes haywire. Render now takes 2 hours (!) and crashes at about 84 %., with the infamous " your computer is low on memory" error. I now had to disable GPU, I also changed the temp folder location just in case, RAM stilll at zero. What on earth could have all of a sudden affected the render so badly? Surely not the 2 audio tracks...? Vegas seems to behave rather irrationally when projects get complex, but this issue just occured out of nowhere on a project that used to render just fine before.

Any hints are welcome.

Thanks!

Comments

xberk wrote on 3/29/2019, 6:23 PM

You make it sound like the complete project would render until you added the two audio tracks? Can you delete all the video tracks and then successfully render just the audio tracks?

Eagle Six wrote on 3/29/2019, 6:26 PM

Two thoughts, if you render out your project without those added audio tracks, bring that render back into a new project, then add the 2 audio tracks, will it then render without problems? What are the specs of the audio tracks you added? Oh, also, what is in your project at the 84% mark? Sorry I guess that was 3!

rraud wrote on 3/30/2019, 9:03 AM

'Media info' for the audio files?

Not sure what the problem is, but a possible work-around is, if the video will render normally w/o the audio, you could then render the audio separately (assuming that is possible) and mux the audio into the video file. For instance, I use MeGUI to mux in AAC audio to a previously rendered AVC video file. The video is not re-rendered of otherwise compromised.

Mindmatter wrote on 3/31/2019, 11:12 AM

Thank you all,

as usual the culprit was the GPU. For some reason it hadn't giuven me any trouble on the renders this time so far, until I added the audio. Guess I should have known better. It was probably the final straw or something. With GPU off, all is fine again.