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Old 28th February 2018, 00:15   #1  |  Link
jedi93
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Potplayer & HEVC HDR 10bit

Can Potplayer (or MPC-HC) display HEVC HDR 10bit correctly on a normal 8bit PC monitor? Without the need of madvr?

What would I need to do to get that working with the smallest possible CPU/GPU usage on my system? http://speccy.piriform.com/results/o...5PAAHAg1btjWyC
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Old 1st March 2018, 18:21   #2  |  Link
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What's wrong with MadVR?
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Old 1st March 2018, 18:33   #3  |  Link
jedi93
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too resource intensive?
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Old 1st March 2018, 19:06   #4  |  Link
mytbyte
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Resources are there to be used and spent. What are you doing while watching HDR video that you need a lot of additional resources for? Any solution for HDR-SDR conversion would take some resources...actually, GPU usage is less in MadVR with HDR conversion than in EVR with no conversion...I get 10% CPU and 50% GPU, and that's a Core 2 Quad Q8200 with GT1030 2GB, you can't get much lower than that...your system should squash that like a fly

Last edited by mytbyte; 1st March 2018 at 19:10.
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Old 1st March 2018, 19:55   #5  |  Link
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I just don't like hearing the fans (at all) if I'm watching a movie or something... The usage itself seems okay, CPU 20-40% and GPU 30-50% ca.

Also, for some reason, in Potplayer madvr shows "HDR, unknown properties" but in MPC-HC it shows "HDR 4000 nits, BT.2020 -> DCI-P3"; both times it's the same file.

BTW: what does "DCI-P3" mean?

Last edited by jedi93; 2nd March 2018 at 14:44.
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Old 1st March 2018, 20:05   #6  |  Link
microchip8
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Quote:
Originally Posted by jedi93 View Post
I just don't like hearing the fans (at all) if I'm watching a movie or something... The usage itself seems okay, CPU 20-40% and GPU 30-50% ca.

Also, for some reason, in Potplayer madvr shows "HDR, unknown properties" but in MPC-HC it shows "HDR 400 nits, BT.2020 -> DCI-P3"; both times it's the same file.

BTW: what does "DCI-P3" mean?
https://en.wikipedia.org/wiki/DCI-P3
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Old 1st March 2018, 20:32   #7  |  Link
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hm...
SHOULD it say DCI-P3 if it's a normal, non-HDR display?
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Old 1st March 2018, 21:14   #8  |  Link
mytbyte
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I'm not sure but I think DCI-P3 is just an info about the color primaries of the grading monitor, not colorspace transform...what decoder filter are you using in pot player?

I'm sure you can control your fans from BIOS or software...

Last edited by mytbyte; 1st March 2018 at 21:25.
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Old 1st March 2018, 23:56   #9  |  Link
jedi93
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I already got something for fan control, that's not really an issue.

I just use the built-in decoders for everything (where possible).
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Old 2nd March 2018, 00:09   #10  |  Link
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The line "HDR 400 nits, BT.2020 -> DCI-P3" means madVR is getting all the HDR metadata properly and the file has a peak brightness of 400 nits and is encoded as BT.2020 with all colors within the DCI-P3 gamut (it should be displayed on DCI-P3 display for best results).

The line "HDR, unknown properties" means madVR is not getting all the HDR metadata properly.
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Old 2nd March 2018, 14:44   #11  |  Link
jedi93
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but why doesn't it get the HDR data properly in Potplayer, but does so in MPC-HC?

btw it was supposed to say 4000 nits, I edited my reply :P
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Old 2nd March 2018, 16:23   #12  |  Link
huhn
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because the potplayer devs didn't have the time to steal the code from lavfilter yet. they simply didn't add that feature.
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Old 2nd March 2018, 19:18   #13  |  Link
jedi93
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hm, okay.
So, is madvr now converting HDR to SDR? How can I check?
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Old 2nd March 2018, 19:55   #14  |  Link
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If it doesn't look washed out, then it is.
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Old 3rd March 2018, 02:50   #15  |  Link
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okay, so it seems to work
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