1 Topic by j86cmentrancemaster (edited by j86cmentrancemaster 28-11-2018 01:54:43)

Topic: Setting DXVA2 (copy-back) is a must, or not?

As the guide, the DXVA2 (copy-back) should be set.
But, can I just not use hardware acceleration? Is there any disadvantage, except cpu usage.

  • MAG79
  • SVP developer
  • Offline
  • Thanks: 1104
  • Thanks for the post: 1

Re: Setting DXVA2 (copy-back) is a must, or not?

Yes, you can use software (SW) decoding.
For SW decoding CPU usage is one of the biggest disadvantages.
The quality of SW decoding and HW decodimg is identical except deinterlace for interlaced videos.

Re: Setting DXVA2 (copy-back) is a must, or not?

MAG79 wrote:

Yes, you can use software (SW) decoding.
For SW decoding CPU usage is one of the biggest disadvantages.
The quality of SW decoding and HW decodimg is identical except deinterlace for interlaced videos.

Got it, thanks!
My reason to use SW decoding is to get a balance of usage between cpu and gpu, because madvr also cost lots of gpu. I found most of time the cpu usage is lower than gpu, so I just want to take a try:)

  • Thanks: 97

Re: Setting DXVA2 (copy-back) is a must, or not?

Don't forget to set HW GPU Usage in SVP itself no matter what as that OpenCL usage does provide better visual than without GPU.