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Ridiculous render time - 1min of comp takes more than 30mins to render

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Ryan Delos Reyes
Ridiculous render time - 1min of comp takes more than 30mins to render
on Sep 9, 2015 at 12:50:08 am
Last Edited By Ryan Delos Reyes on Sep 9, 2015 at 12:57:22 am

Hi Guys,

I have a 20-minute comp that takes 4 hours or so to render. I only rendered 1 minute of it to measure how long a one minute comp will take to render. They are all clips with NO EFFECTS ADDED, NO EXPRESSIONS, just the clip itself. I think the problem has to do with the clips themselves but I just want to make sure. Below are the details of the project and my system.

SYSTEM:

Core i7 4790 3.6Ghz
GTX 750 Ti 2Gig
8Gb 1600 RAM
120 SSD (OS)
750gb Mechanical drive 7200rpm (Media) (SATA 6.0Gbps connection not USB 3.0)
2TB Mechanical drive 7200rpm (Export) (SATA 6.0Gbps connection not USB 3.0)

Windows 7 Home Pro
After Effects CC 13.2

CLIP INFO



ADDITIONAL INFO

The 1-minute clips just finished rendering and it took 42 minutes to render it. Also, I found interlaced lines in BOTH the source and rendered clips.





QUESTIONS

I'm suspecting the clips themselves are the culprit, if so, will re encoding them to a different format (like Avid lossy DNxHD) might shorten the render times? I can encode them while I sleep.

--------------------------------------------------------------------------------------------------------

Thank you so much for taking the time to read this.


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Walter Soyka
Re: Ridiculous render time - 1min of comp takes more than 30mins to render
on Sep 9, 2015 at 2:08:54 am

Of course this shouldn't take so long. Perhaps you have extremely aggressive memory & multiprocessing settings? What are they?

Also, if you want Ae to preserve interlacing from start to finish, make sure that you are:

1) interpreting the footage with fields
2) rendering with fields

See this for more:
https://helpx.adobe.com/after-effects/using/importing-interpreting-video-au...

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Ryan Delos Reyes
Re: Ridiculous render time - 1min of comp takes more than 30mins to render
on Sep 9, 2015 at 3:07:33 am
Last Edited By Ryan Delos Reyes on Sep 9, 2015 at 3:15:23 am

Hi Walter,

Thanks for the reply.

I have 8GB ram (I will add another 2x4GB stick by the end of the month). 6GB is dedicated to AE.

"Render Multiple Frames Simultaneously" is disabled.


"Also, if you want Ae to preserve interlacing from start to finish, make sure that you are:

1) interpreting the footage with fields
2) rendering with fields"




AE reads the clips as progressive when I click "match source" in the render window. I don't know what pulldown means but I'd be glad to learn what it is.

EDIT:

I interpreted the footage as "upper line first" and the interlacing is gone which is what I wanted to achieve. But the rendering time hasn't change.


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Walter Soyka
Re: Ridiculous render time - 1min of comp takes more than 30mins to render
on Sep 9, 2015 at 8:48:58 am

[Ryan Delos Reyes] "I have 8GB ram (I will add another 2x4GB stick by the end of the month). 6GB is dedicated to AE."

Try dedicating less RAM to Ae: maybe 4 GB. You're barely leaving any resources for the system right now.

http://blogs.adobe.com/aftereffects/2009/12/performance-tip-dont-starve-yo....

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Ryan Delos Reyes
Re: Ridiculous render time - 1min of comp takes more than 30mins to render
on Sep 9, 2015 at 11:43:01 pm

Well, that worked! Thank you so much, Walter! Thanks for the links to the article, too!


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