Premiere Pro 2021 99% CPU Usage When Exporting

Explorer ,
Apr 06, 2021 Apr 06, 2021

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Hello,

With the latest version of PP (v15.0) I'm getting consistent 89-99% CPU usage when exporting a video file. Normally I'd be happy that PP is finally utilizing more of the system's resources however the export times are the same as they were before it started using all of the CPU so really all it's doing is slowing down my PC for multitasking while a video is rendering.

Specs:

- Windows 10

- Premiere Pro 2021 v15.0

- AMD Threadripper 3970X

-128GB DDR4 RAM

- Nvidia RTX 3090 Founders Edition

- M.2 SSD

TOPICS
Export, Hardware or GPU, Performance

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Explorer , Apr 08, 2021 Apr 08, 2021
Thank you, that's good to know. Although even before the 2021 update I had been exporting ProRes and the CPU usage never went that high. Overall I think it was something weird going on between the version of PPro and a GPU driver, I've since updated the GPU driver again and the problem has gone away so far thankfully.

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Community Beginner ,
Apr 06, 2021 Apr 06, 2021

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What is the encoding setting? Is this set for Hardware?

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Explorer ,
Apr 06, 2021 Apr 06, 2021

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Encoding settings are as follows (been using these settings since ProRes was added and never encountered this issue):

 

Format: Quicktime

Video Codec: Apple ProRes 422 HQ

Quality: 100

Width: 3840

Height: 2160

Frame Rate: 23.976

Field Order: Progressive

Apect: Square Pixels 1.0

Render at Maximum Depth: Yes

Export Color Space: Rec 709

Depth: 16-bpc

Use Maximum Render Quality: Yes

 

How do I check if the renderer is set for hardware or software? My project playback is set to hardware (CUDA) if that's what the renderer pulls it's export mode from.

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Advocate ,
Apr 06, 2021 Apr 06, 2021

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What is the color of a timeline render bar, red or yellow? Having near 100% CPU load for a red one is normal.

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Explorer ,
Apr 06, 2021 Apr 06, 2021

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It's yellow - but also just so I'm clear - I'm not talking about playback or rendering in the timeline I'm talking about when exporting the video.

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Advocate ,
Apr 06, 2021 Apr 06, 2021

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quote

It's yellow - but also just so I'm clear - I'm not talking about playback or rendering in the timeline I'm talking about when exporting the video.

Export = rendering  + encoding. So yes, it's still applies

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Adobe Community Professional ,
Apr 06, 2021 Apr 06, 2021

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quote

Render at Maximum Depth: Yes

Depth: 16-bpc

Use Maximum Render Quality: Yes


By @Reel Bump

 

Un-check Render at Maximum Depth and Use Maximum Render Quality unless you know what they do and you know that you really need them. The majority don´t need any of those boxes checked and if they still do it do often cause issues, such as slowdowns.

 

Read why, how and when here: What are those check boxes doing?

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Explorer ,
Apr 06, 2021 Apr 06, 2021

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Just did a re-render with those boxes unchecked - same outcome 99-100% CPU usage.

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Community Beginner ,
Apr 06, 2021 Apr 06, 2021

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Do you have Mercury Playback enabled in the Project Settings panel? File/Project Settings/General?

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Explorer ,
Apr 06, 2021 Apr 06, 2021

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Yes I do

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Explorer ,
Apr 08, 2021 Apr 08, 2021

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Adding onto this - Starting a new project I'm receiving the same CPU usage when importing files (Panasonic GH5s 4K V-Log files).

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LEGEND ,
Apr 08, 2021 Apr 08, 2021

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Part of that high CPU usage is that there is absolutely no hardware encoding whatsoever to ProRes. All encoding is software only.

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Explorer ,
Apr 08, 2021 Apr 08, 2021

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Thank you, that's good to know. Although even before the 2021 update I had been exporting ProRes and the CPU usage never went that high.

 

Overall I think it was something weird going on between the version of PPro and a GPU driver, I've since updated the GPU driver again and the problem has gone away so far thankfully.

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New Here ,
May 09, 2021 May 09, 2021

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Just curious, what drivers are you using for your NVIDIA gpu?

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