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JohntheLast
Participating Frequently
June 18, 2020
Question

Rendering a 4K video not working

  • June 18, 2020
  • 2 replies
  • 336 views

I've tried to wade through the various issues but admit to being somewhat confused. I have an NVIDIA GTX 1650 Super running on an AMD Ryzen 3900X processor with 12 cores. I've been able to see GPU rendering on a 1920 resolution video and that seems to accelerate just fine. But when I try to run a 4K video through exporting to media encoder, the hardware encoding shows as not available. What gives? Using the standard H.264 High Quality 2160 4k presets. I wanted to get as good a quality as possible before uploading it to Youtube.

 

As another, perhaps unrelated symptom, as soon as I either of "Render at Maximum Depth" or "Use Maximum Render Quality" boxes, the ability to specify Hardware Encoding stops working.

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    2 replies

    R Neil Haugen
    R Neil Haugen
    Legend
    June 18, 2020

    "Render Max Depth" is normally for use when you don't have a full discrete GPU, and forces the CPU to use GPU style/depth math. It may or may not help if you are working with 10/12 bit media and export. If your media is 8 bit, and you have a GPU, ignore it.

     

    "Max Render Quality" is only of use in any significant resizing, such as a 4k clip on an HD timeline, and ... you are getting jaggies on diagonal lines. Other than that, leave if off as it can in some circumstances induce artifacts.

     

    If you have chosen 2-pass encoding, you will not have any accelerated processing, as that is simply not available in any app. Accelerated encoding only works in 1-past encodes.

     

    Neil

    Everyone's mileage always varies ...
      J
      JohntheLastAuthor
      Participating Frequently
      June 18, 2020

      I may have solved my own problem but still have a variant of the question. I thought I had unchecked all the boxes but didn't. When I run with the standard preset it seems to be working, although I won't know for about 5 hours based on the time estimate. So, let me change the question. Why does setting either of the two above mentioned checkboxes cause the unavailability of hardware encoding. I'll repost some additional info when the current rederning run stops.

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