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Generating Proxies via Media Encoder does not use GPU, but CPU instead?

Explorer ,
Oct 17, 2020

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Hi!

Why are Proxies generated via CPU-Threads? I think my RTX 2080Ti is way faster then my i9 9900KF for generating Proxies... 
CpuGpu.PNG

It's using up to 100% constant CPU-Usage? 

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Formats, Hardware or GPU, Performance

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Generating Proxies via Media Encoder does not use GPU, but CPU instead?

Explorer ,
Oct 17, 2020

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Hi!

Why are Proxies generated via CPU-Threads? I think my RTX 2080Ti is way faster then my i9 9900KF for generating Proxies... 
CpuGpu.PNG

It's using up to 100% constant CPU-Usage? 

TOPICS
Formats, Hardware or GPU, Performance

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48

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Oct 17, 2020 0
Adobe Community Professional ,
Oct 17, 2020

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@RJL is the person with the deepest gear knowledge for this type of question. The GPU is not just "an addendum" to the CPU, but a completely different subsystem. And is coded as such, and that differently in every app. Plus H.264 throws another variable in the mix, if that's what you're using for proxies ... though I hope not.

 

Depending on the particular CPU and GPU, the current versions can have very different usage of the GPU for encoding purposes. And just being an i9 is not necessarily meaning you get more GPU usage, it depends on which i9 CPU you've got.

 

And what of course is applied for effects ... many things are not actually run through the GPU in Premiere at all. Some things will use the GPU for everything they can, such as Warp and Lumetri, some others on the GPU accelerated effects list.

 

So ... for say basic encoding of proxies, without any effects, depending on the CPU and what format/codec you're using for the proxies, you may get little to no GPU effort. Or ... more.

 

Neil

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Oct 17, 2020 0
Adobe Community Professional ,
Oct 17, 2020

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You probably won't get there without making the proxies at a different resolution that the actual files. I use 720p proxies, here's a thread about that:

https://community.adobe.com/t5/premiere-pro/pp-2019-making-proxies-runs-well-wtask-manager/td-p/1041...

 

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Adobe Community Professional ,
Oct 18, 2020

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I don't think the KF i9 has Quick Sync which can help for H.264 video codecs.

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Oct 18, 2020 0