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Cr4z33 · 2016-01-22, 14:42

I just received my brand new MSI GTX 960 Twin Frozr 4GB graphic card to be able to play 4K@60hz 4:4:4 files and especially the HDR ones.

I replaced therefore the stock Kodi with the latest DSPlay version and madVR.

I think I selected DXVA2 (copy-back) properly, but somehow when playing Samsung UHD HDR demos (3840x2160 10bit) there's only audio playing, 1st video frame frozen and Kodi going back to folder view...

The only way to stop the playback is to ALT+F4 close Kodi.

What is happening? Undecided

huhn · 2016-01-22, 14:50

a 960 can't decode 4:4:4 HEVC files.

you need a very new version of lavfilter to get the meta data to madVR.
lavfilter is using it own lavfilter version and this need the correct settings like enabled HEVC and enabled UHD hardware decoding and yeah as you already said DXVA copy-back.

and yeah you need a very new madVR version too.

try first to get it working in mpc-hc.

k4sh1n · 2016-01-22, 21:58

I think "huhn" is right about the 960 not being able to do 4:4:4 @ 60hz it will at most do 4:2:0, I get 4:2:2, 4:4:4 only at 24hz

Also make sure you have a HDMI 2.0a cable and not 1.4a for HDR

See LAV here

huhn · 2016-01-22, 22:37

(2016-01-22, 21:58)k4sh1n Wrote: I think "huhn" is right about the 960 not being able to do 4:4:4 @ 60hz it will at most do 4:2:0, I get 4:2:2, 4:4:4 only at 24hz

Also make sure you have a HDMI 2.0a cable and not 1.4a for HDR

See LAV here

decoding and sending are two totally different things.

the 960 can send UHD@60 YCbCr 4:4:4. same for RGB. but htat doesn't mean the card can decode 4:4:4.

there is no HDMI 2.0 cable there was never a cable with a "version".

cables have a speed limit that standard and high speed.

if a high speed cable works with UHD is simply luck nothing else. because they simply changed the spec and old cables should now deliver more data which works in most cases with cheap cables. in the end the cable doesn't now what is send over it.

of cause it is working totally fine for me.
http://abload.de/img/nothingspecail56x2y.png

Warner306 · (This post was last modified: 2016-01-23, 06:53 by Warner306.)

I thought HDMI was limited to lower refresh rates when sending 4K 4:4:4? You can send this at 60 Hz?

Oh, I see. It is 8-bit. So the UHD content is scaled down in bit-depth?

Cr4z33 · 2016-01-23, 10:19

(2016-01-22, 14:50)huhn Wrote: a 960 can't decode 4:4:4 HEVC files.

you need a very new version of lavfilter to get the meta data to madVR.
lavfilter is using it own lavfilter version and this need the correct settings like enabled HEVC and enabled UHD hardware decoding and yeah as you already said DXVA copy-back.

and yeah you need a very new madVR version too.

try first to get it working in mpc-hc.

Oh gosh I bought especially a GTX 960 just because of that and now it comes out it can't do it... Sad

So what kind of hardware on Earth can do that then?
All I want is Kodi and 3840p@60hz 4:4:4 metadata playback.

Perhaps a nVidia Shield can do that?

huhn · 2016-01-23, 10:28

(2016-01-23, 06:39)Warner306 Wrote: Oh, I see. It is 8-bit. So the UHD content is scaled down in bit-depth?

10 bit doesn't matter on a UHD screen. the dither noise is only 1/4 the size of a 1080p screen so it even harder to see.

only the flagship TVs may have a 10 bit display.

even the brightest display has "nothing" to do with HDR yet they peak at ~600 CM²

it is very important that the video is encoded in 10 bit. but that's it for now.

@topic

the issue here is there is a difference between decoding and sending images.

Cr4z33 · 2016-01-23, 10:46

FYI I own a Samsung UE55JS9000 TV. Wink

huhn · 2016-01-23, 11:14

3.7 k CR, 450 cm² display and edge lit.

good luck with HDR.

Cr4z33 · (This post was last modified: 2016-01-23, 12:01 by Cr4z33.)

(2016-01-23, 11:14)huhn Wrote: 3.7 k CR, 450 cm² display and edge lit.

good luck with HDR.

Huh?
So far so good.

And what about this then?

Quote:So what kind of hardware on Earth can do that then?
All I want is Kodi and 3840p@60hz 4:4:4 metadata playback.

Perhaps a nVidia Shield can do that?

huhn · 2016-01-23, 12:35

there is no content with 4:4:4 the UHD BD is 4:2:0.

Cr4z33 · 2016-01-23, 12:55

(2016-01-23, 12:35)huhn Wrote: there is no content with 4:4:4 the UHD BD is 4:2:0.

OK, so the fact that I can't play properly those Samsung demos with the HTPC is only a matter of Kodi/madVR settings then?

huhn · 2016-01-23, 12:57

nope that's a bug and that's what you should try: http://forum.kodi.tv/showthread.php?tid=...pid2222397

Cr4z33 · 2016-01-23, 13:56

(2016-01-23, 12:57)huhn Wrote: nope that's a bug and that's what you should try: http://forum.kodi.tv/showthread.php?tid=...pid2222397

Thank you very much for your support and I am going to try that as soon as I get home tonight.

Out of topic can you confirm that it all can run under both Windows 10 32&64 bit versions? Angel

Derek · 2016-01-24, 14:42

(2016-01-23, 13:56)Cr4z33 Wrote:
(2016-01-23, 12:57)huhn Wrote: nope that's a bug and that's what you should try: http://forum.kodi.tv/showthread.php?tid=...pid2222397
Thank you very much for your support and I am going to try that as soon as I get home tonight.

Out of topic can you confirm that it all can run under both Windows 10 32&64 bit versions?

No reason why not mate, i have 32bit win 10 and 64bit and the only diff. is i have more ram in 64bit version.