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Participant
December 17, 2021
Question

Help with Multi Frame Rendering

  • December 17, 2021
  • 1 reply
  • 1363 views

Yesterday I tried out the new v22.11 version of AFX to benefit from Multi Frame Rendering as I was so ready to not have to wait more than 4 hours to export a 3 minute video.

 

The results were immediately fantastic, with my render time going down to 45 minutes! I was amazed and incredibly relieved - I could now get the most out of my CPU and get a TON more done,  This is what my CPU looked like at the time:

 

 

 

Today, I go back to my project (still open and running from yesterday) and amended a single text layer (and literally nothing else) before re-exporting with the same settings (duplicated the render queue entry). To be clear, the text is the only thing I changed. It's now gone back to taking over 4 hours to render out, and despite MFR being enabled and the progress details telling me it's rendering 7 (sometimes 16) concurrent frames, this is what my CPU looks like today:

 

 

 

It looks like it's only fully utilising one core again? And the overall usage barely goes over 35%. How can I get it to slam my CPU again? That was brilliant!

 

I've tried restarting, enabling GPU acceleration, clearing cache among some other things I can't remember rn and I just can't get it to slam my CPU in the same way it did yesterday.

 

Anyone else got any ideas?

 

You can see my specs in the screenshots, export settings are default 'best' quality and Quicktime ProRes 442, plenty of memory on the SSD I'm writing to.

 

Thanks in advance.

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1 reply

Community Expert
December 17, 2021

I would try saving the project, then start a new Project and Import your saved project instead of opening it. There may be some kind of a glitch in the AEP caused by the change.

 

The only other thing I can think of would be a corrupted font. 

Participant
December 17, 2021

Thanks for your suggestion Rick

 

At first I thought it had worked, as the initial frames (roughly the first 5 seconds of the video) seemsed to go pretty fast and my remaining time said 1 hour. But it's gradually gotten slower and slower since, to the point it's now saying it'll be 3 hours (and going up). I noticed it was saying about .2 seconds per frame which has also gone up now to 2.09 seconds per frame. CPU usage gradually going down too, having started at arounf 50% CPU to now hanging around the 20% mark.

 

I think I'll try a reinstall.