LAV Filters and 4k HDR playback on nvidia, whats the secret?

JeffMD

Platinum Member
Feb 15, 2002
2,026
19
81
So I believe a while ago I got this to work on my msi laptop with 1060gtx by selecting DXVA2 copy-back (Optimus). I am currently trying to get this to work on my 970gtx and NONE of the options work. NVidia and the 2 DXVA2 options are enabled but when I reload a 4k HDR test video it keeps going back to avcodec. The latest nvidia driver is installed and I also updated the lav libraries but to no avail.
 

nvgpu

Senior member
Sep 12, 2014
629
202
81
There's no secret, Maxwell GM200 & GM204 doesn't have fixed function HEVC Main10 or VP9 hardware decoder, only Maxwell GM206(4K max res), Pascal(8K max res) & upcoming Volta GPUs have HEVC Main10 and VP9 hardware decoding. Hybrid/partial decoding isn't supported in LAV.
 

JeffMD

Platinum Member
Feb 15, 2002
2,026
19
81
Interesting, so where do we look for to take advantage of hardware assisted decoding on 9x0gtx cards?
 

nvgpu

Senior member
Sep 12, 2014
629
202
81
Nvidia hybrid decoding only works on HEVC 8-bit videos, 10-bit is not supported at all.

Either upgrade to a Pascal GPU or wait for Volta GPUs to be available for 10-bit hardware decoding.
 

JeffMD

Platinum Member
Feb 15, 2002
2,026
19
81
errr... I am truly flabbergasted. I can't believe hevc 10 bit..the only real hevc since it is needed for hdr, was left out of this. I really don't know what to say... this is like when sony released the ps4 pro..with no blue-ray 4k support. I take back what I say about nvidia, they got lucky with the performance gains 9x and 10x, they still have their heads up their asses. ^^

A new video card would be moot, if I upgraded my video I would just upgrade the aging xeon e1231 and end up with a cpu that could decode it. It isn't an issue at all right now but I am shocked on such an oversight. (Ok, I am also shocked that despite all the CUDA horsepower these things pack, coding it to decode hevc 10bit isn't possible.)