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Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???

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Marc Knieb
Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 20, 2015 at 8:42:09 am

Hey guys,

I am rendering Videos für Youtube... Bodybuilding color graded content.

Project Settings:

If I render this stuff with "good" my cpu works really well and fast... (60-80% Usage) and 15 Minutes...

If I render the same clip with "Best" my cpu works bad... (10-20% usage) and 80 Minutes....

Cpu: i7 5820k, Overclocked to 4,4 Ghz.

Where is the problem?

Thank you


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Steve Rhoden
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 21, 2015 at 12:29:57 am

There is no problem Marc, simply have the rendering quality set to "Good"
at all times. You need nothing more than that.

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:
http://www.facebook.com/FilmexCreativeMedia


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Marc Knieb
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 21, 2015 at 6:16:57 pm
Last Edited By Marc Knieb on Nov 21, 2015 at 6:18:35 pm

Hey Steven,

thx but...

NOw i am using another Codec for Youtube:

Sony mp4 etc... Cabac 1920x1080 , 25 mbits , input file: 4k flat from GoPro....

Color graded with Magic bullet drops...


Look at the Cpu is it normal???? so low??? i7 5820k , overclocked to 4,4 Ghz

I need for 20 Minutes rendern 2:30 Hours ....



vegas.png


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Bill Burnette
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 23, 2015 at 2:14:23 pm

Evidently the part of the encoding that optimizes quality is single threaded. It is not able to use more than one core, so it can't use 100% of your multicore CPU.


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Steve Rhoden
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 24, 2015 at 4:45:19 am

.... As Bill said!

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:
http://www.facebook.com/FilmexCreativeMedia


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Marc Knieb
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 24, 2015 at 9:31:08 pm

And what can i do against it???

Codec Best for youtube?

Sony AVC/MVC (mp4, m2ts, avc)

Internet 1080p.

Entropy Codierung CABAC


IS the codec the problem?


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Aaron Star
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 24, 2015 at 10:07:04 pm
Last Edited By Aaron Star on Nov 24, 2015 at 10:14:29 pm

I would like to know more about your source material, and the plugins in use. The Best setting is multithread optimized, it could be something in the render chain that is limiting your render performance. Could be the way the GoPro format and magic bullet are being handled. However, I did not see plugins in use at least on the point where the cursor was.

You could also try rendering to XDCAM-EX.MXF and upload that directly to YouTube.


I would try building a sample project where you compare source media in XDCAM-EX, HDCAM-SR, or Cineform.avi, then render to Sony AVC "internet 1920x1080-30p" around 16MB/s profile, or XDCAM-EX.mxf. Do this in CPU only mode, unless you have a 290X or better AMD GPU.


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Marc Knieb
Re: Full resolution rendering quality "BEST" = low render speed (low CPU-Usage) ???
on Nov 27, 2015 at 5:37:25 pm

HI Aaron,

i am recording with my go pro in 4k and render it to 1080p for youtube.

Its color graded with magic bullet and sharped with Newblue Totalfx... my source material is flat.

I am current rendering in mp4 sony media codec... 30 mbits, 1080p, cpu only... i have a GTX980 ti... but i use only my cpu...

10 minutes rendering 90 minutes??? Onyl grading and sharped???? CPU only 30-40%



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