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5th January 2018, 15:03 | #1 | Link | |
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Join Date: Aug 2012
Posts: 5
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GTX 970, HDR and HEVC - Does this effect my image quality?
I have a problem that some HDR samples are stuttering and unplayable.
For example: http://4kmedia.org/lg-chess-hdr-demo/ I've read around and found that my GTX 970 decodes HEVC in an hybrid mode and that's the cause of the problem. My CPU is i7-4770. When I play a laggy video, my CPU is on 60% and my GPU is on 30% so I'm not sure why this is happening. Most movies I tried to play using MPC-BE & madVR are playing fine except those HDR samples. (I'm guessing I'll find more problematic movies in the future) If I understood correct, according to this bit of info: Quote:
My questions are: 1. In the current state with my current card, stuttering aside, am I'm loosing image quality watching HDR due to the 8 bit 10 bit stuff? 2. Is there a player that I'm not aware of that can handle HEVC better? |
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5th January 2018, 15:13 | #2 | Link |
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Join Date: Dec 2002
Posts: 5,565
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1. You are not losing quality because of the lack of 10 bit hardware decoding. (If you have a HDR display you might miss out on HDR pass-through you could have with newer card & OS. Though I'm not really sure how quality compares to the other madvr output modes.)
2. What video filter are you using for the decoding? Try LAV Video 64 bit in software mode. (We have a whole thread dedicated to HEVC decoding performance.) |
5th January 2018, 16:02 | #4 | Link |
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Join Date: Oct 2012
Posts: 7,922
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while youtube HDR is barely possible with that system high bit rate HEVC should be impossible no matter what.
the topic is pretty simple the hybrid decoder from nvidia are pretty bad and doesn't have to be faster than software decoder is used with an modern i7. so it all comes down to your CPU and i doubt it can decode 100 mbit HEVC. i can't test it but i don'T see a reason why HDR output should not work with a 970 it has HDMI 2.0 and nvidia is mostly interested in HDR gaming and this card should be good enough for that. |
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