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A
Abdul_Majid
Known Participant
April 27, 2017
Answered

GPU Accellaration (CUDA) not working with H264 1080P Exports

  • April 27, 2017
  • 3 replies
  • 2564 views

When I export to H264 1080p, my GPU monitor is showing no signs of activity and it is taking approximately 10 hours for my 90 minute timeline to render through.

When I export the same timeline to H264 720P, my GPU monitor shows significant activity and my 90 minute timeline renders in less than an hour.

I have the GTX 1070 graphics card. I don't think it is the graphics card at fault because I used to get the same problem when I used to use the supported GTX 570 card.

I have tried this in Premier Pro CC (2017). I have also tried exporting through Media Encoder but I get the same performance problem.

Any ideas or suggestions welcomed.

This topic has been closed for replies.
Correct answer R Neil Haugen

The GPU isn't necessarily used much in a "straight" export, such as if that's a 1080 sequence to a 1080 export. However, the GPU is used for resizing on export. This could be the reason you're getting this behavior.

Yea, odd, but ... sigh.

Neil

3 replies

A
Andy 1968
Inspiring
November 29, 2020

GPU acceleration and GPU encoding and decoding are not the same thing. I think the GTX 1070 can use GPU encoding and decoding which can help render times for H.264. If you have a supported Intel based CPU you can comapre the GPU to the CPU for encoding and decoding. If you watch the video below I can make the GPU work hard or the CPU work hard. My renders time can very depending how I have things setup.

    K
    kevinjjjack
    Inspiring
    November 28, 2020

    I'm getting 600 hours to export a 2 hour 1080 video. The original file is 4k 10 bit ...

    Averdahl
    Community Expert
    AverdahlCommunity Expert
    Community Expert
    November 28, 2020

    Enough space on the disk?

     

    Any disk with less that 10% free space is more or less unusable and will cause issues like this.

     

    Solved: Re: 5 Days to export a 4k 9 hour video, is this no... - Page 2 - Adobe Support Community - 11629373

      A
      Abdul_MajidAuthor
      Known Participant
      April 27, 2017

      note:

      when I export to h264 1080P

           Graphics Monitor: Little or No Activity - getting the odd fluctuation from 0 to 1%

           CPU Monitor: 90-100%

           Time taken to export: approx 10 hours

      When I export to h264 720P

           Graphics Monitor: 30-40% Activity

           CPU Monitor: <80%

           Time taken to export: approx 50 minutes

      R Neil Haugen
      R Neil HaugenCorrect answer
      Legend
      April 28, 2017

      The GPU isn't necessarily used much in a "straight" export, such as if that's a 1080 sequence to a 1080 export. However, the GPU is used for resizing on export. This could be the reason you're getting this behavior.

      Yea, odd, but ... sigh.

      Neil

      Everyone's mileage always varies ...
      A
      Abdul_MajidAuthor
      Known Participant
      April 28, 2017

      That's a very good answer - spot on!!!

      Does that mean GPU only good for resizing projects? That has to be a bug, surely(?).

      I tested by changing my Sequence frame size from 1080P to 720P and then attempted to export to 1080P from the 720P sequence - now I can see plenty of GPU activity. By doing this, am I getting any real benefit in terms of the time taken to export?

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