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Slow exports in Premiere Pro, looking for best practices
Hello! I am trying to move to PP from FCP7. Right now, I’m using CS6 but will move to the cloud version at some point.
I’ve read about how exporting is different (i.e., no by reference movies). I am trying to figure out the best practice to reduce export time. I do a lot of green screen work, so here is the test:
I have a 2 minute clip recorded in Pro Res LT (Atomos ninja). I chose “New Sequence from Clip.” to match the origination codec and frame size.
I applied a green screen filter to it (Primatte Keyer Pro). I go ahead and pre-render the footage, even though it plays back in realtime.
This takes 5 minutes.
Then I go to export. I check “match sequence settings” and “use previews.”
The export takes 5 minutes.
Wuh? I thought using the previews would bypass re-rendering.
What am I not understanding?
Thanks!
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Mac 5,1
10.8.5
CS6
NVIDIA Geforce 680, “turned on” with change to txt file. Shows as enabled in Pr6
internal hardware raid -
10 Replies
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What are your exact export settings? Take a screenshot.
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CS 6.0.5, btw. On a 3.46 GHz 6-core silver Mac Pro.
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Primatte Keyer is a 3rd party plugin so it will run only on the cpu.
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Adobe Certified Expert Premiere Pro CS6/CC
Adobe Community Professional -
Yep, that’s correct. The GPU is not actually being used in this example.
But Premiere should still be able to pass the preview render files to the export process.
Unless you are saying that ALL third party effects have to re-rendered in full during export?
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How much time does it take if you don’t use previews?
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5 minutes.
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From what I remember, CS6 does not take advantage of the Use Previews, even though there is a box to be checked for it. Somehow the option got into the CS6 version before it was ready to be functional. In CC you will see the advantage.
Joe
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Yep. The blog post above is what I used to setup my Pro Res workflow. Works great!
After researching, I think there is a bug in CS6 that prevents the previews from working. Another online user found a workaround that I’ve been able to use to make it work.
I’ll include the link here, but repeat the advice. https://forums.adobe.com/thread/1039888
According to his updates this bug isn’t fixed until CC 2014.1) Render previews as you go set to the same codec as your sequence codec, in my case, Pro Res LT.
2) Use Mercury Playback engine set to CUDA if you have a CUDA card.
3) When finished with your project and ready to export, go to Project > Project settings
4) Turn Mercury Playback engine to Software only. When asked whether you want to keep previews, say YES. (This means you are keeping the previews created while you had it set to CUDA.
5) Now export.In my case, the export went from 5 minutes (meaning it was re-rendering the entire sequence) to 40 seconds.
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