Posts by PlatypusW

    Kodi Matrix 19.0 HDR Edition


    Looks like Windows v19 nightlies now include patches to make it work without having to use external players. Still would prefer to have a *nix based solution.

    Yeah it works well, I had been using the builds before it got merged into the nightlies but eventually I gave up with windows update breaking dual boot etc


    I’ll go back to my NUC when/if HDR is sorted but for now I’m happy using the N2+.

    Yeah, it forces the output to 8-bit.

    Did you ever try Windows on your NUC? I wonder if Windows driver also force 8-bit.

    I have used hdr quite a bit on Windows.


    Funnily enough with my old Samsung tv I was getting constant white flickering - so a while ago I contacted Intel support about it, and after a lot of back and forth they eventually came back and said that the NUC did not support 8 bit, only 10 bit and the reason the flickering was occurring is to due to the tv panel being 8 bit. Can confirm on my new 10bit tv it doesn’t occur so not sure whether it was true or not.


    At any rate - that’s why I was curious about this patch forcing 8bit when the support people told me it could only output 10 bit - maybe that’s a Windows ‘hdr mode’ thing?


    Edit: this is the reply I got, maybe at the time I just took that to mean it only outputted 10bit...


    Of course, I’m sure the devs know a lot more than the support :P

    Quote

    In the Technical White Paper for HDR on Intel Graphics (HDR_Intel_Graphics_TechWhitePaper.pdf) it is specified that Intel Graphics only supports HDR10 - would you be able to confirm with the TV manufacturer that their specific model supports HDR10?

    Thanks for posting this!


    Pretty much same result as last time, no video but have sound and tv switching to hdr.

    This time I also got no UI/playback menu as well so something has changed at least :S


    Happy to keep testing and waiting :)

    Does it play non-HDR video (with drmprime hw decoder enabled)?

    Good shout, sorry didn’t even think of that as all my HDR stuff is on a separate disk.


    Yes, non hdr videos play fine with drmprime.


    I’d still like to wait for someone else to test just to rule out my setup ;) - or me doing something silly /shrug

    Downloaded but too tired tonight to test it out. Prolly won't have time to try it out till this weekend. PlatypusW any luck?


    Thanks for the image smp.


    I had the same as before - no video. That said, this time the tv did switch into HDR mode so that is (big) progress on what happened last time for me.


    Not sure if the video is audio related, I tried both plugged into avr with passthrough and plugged straight into tv with no passthrough.


    Let’s see how others get on.

    I was wondering if anyone was able to reliably get HD Audio passthrough using the thunderbolt 3 port on a NUC (8,9,10) running libreelec?

    Thanks for the reply, am I missing something obvious there? My NUC is definitely 8th gen and is listed as having:


    Thunderbolt™ 3 USB-C port providing DisplayPort 1.2 or USB 3.1 gen 2


    I would understand if it shouldn’t work and in fact never worked. That would be great actually.
    But what actually happens is that HD Audio works, but only about 5% of the time. The only thing I have to do is stop and start the video again and it might just decide to work.


    It’s enough that it annoyingly doesn’t just flat out ‘not work’ but doesn’t work enough that it’s actually usable.


    At this point, I’d love to just know why if nothing else. As I said, am I missing something obvious?

    Is anybody able to explain why this seems to be so flaky?


    I tried starting and stopping a dts-hd file 20 times to see how often I got passthrough sound, results:


    Club adaptor: 0%
    Anker cable: 5%
    Apple adaptor: 40%


    Why is it like this? Drivers? EDID?


    I somehow don’t think getting a specific adaptor is going to help is it?


    Is this an intel problem? It works 100% of the time with all adaptors in windows.


    Is it even worth me trying a different build, e.g a Milhouse build?

    Does anyone have any recommendations for a Thunderbolt 3 (USB C) -> HDMI cable/adaptor that supports HD audio passthrough in Linux/Libreelec?

    For a while I couldn't understand why I was only able to get HD audio out of the NUC's thunderbolt 3 port within Windows until I stumbled upon this thread: Intel NUC8i3BEH Audio Issue

    Unfortunately the product link in that thread no longer work, does anyone have any others they know that work?

    I have tried Anker USB C -> HDMI (Only works in windows), and recently tried the Club 3D adapator which annoyingly also doesn't work (I don't know if I should be reaching out to them to see if theres a firmware update?).

    Surprising, I randomly tried my iPad's USB C to HDMI adapator and that kind of worked, but the audio had slight interference.


    Potentially this might work?

    Limited Display Modes/No Sound
    Amazon.com: Cable Matters USB C to HDMI Adapter (USB-C to HDMI Adapter) Supporting 4K 60Hz in Black - Thunderbolt 3 Port Compatible for MacBook Pro, Dell XPS 13, 15 and More: Computers & Accessories

    No go for me :(


    Made sure prime hw decode was on (can see it’s using ff-hevc-drm_prime(HW)).


    Anyway, all I get is blank screen. Can see it’s playing though. No hdr switch not that it would help with no video :S


    Something is going funny with audio too as it isn’t picking up any device and is greyed out on Bluetooth, that may or may not be related.


    For the record this is clean install on an empty m2 so happy to try again in the future if needs be.


    Tv is Samsung UE40MU6400


    I can get you logs if you think it would help, but I’m by no means expecting you to support anything, just trying to help out test, which I feel may be a little too early to do yet.

    I would be up for testing too, but I also have an 8th gen NUC (i5), and the patches seem to specify just the 9th gen? Is it too early for 8th gen at the moment?


    HDR in some degree obviously works with it as I have a windows partition purely for watching HDR content.

    Any chance I can pick your brain PlatypusW? I have an 8th gen NUC and its not working out for me I feel. When I enable HDR in windows it looks horrible, so washed out and gray. Your not having this issue?

    It was a while ago that I sorted my windows setup now, pretty much got the NUC at launch. I didn’t note much down as I didn’t plan on having a windows OS for very long as I was hoping Linux would be sorted out by now but clearly not (though it sounds like it’s getting closer).


    I’ll admit I had a few hiccups with setup - but at the time I felt that was down to the tv model I was using - there seemed to be a few issues that were different depending on the tv model.


    At any rate - what software are you using for playback? I did find that certain software wasn’t outputting hdr (properly).


    My current setup is kodi frontend with mpc-hc and madvr in backend. It seemed to be the easiest way to get hdr to work for me - but I’m fairly certain that was down to my tv and the drivers at the time, I don’t know if things have improved (or got worse). As far as I can tell I don’t have greyed out colours, I have done a few comparisons between it and my uhd player.

    Hi PlatypusW, which NUC do you have? Do you know if an 8th gen Intel i3 NUC would be enough to run 4K HDR or an i5/7 is better?


    Thank you.

    I have the i5 (8th gen). I only did this because I like to have the option of a little more power - and who knows, when the graphics gets too old I might end up using it for something more cpu intensive - I’ve at least put my haswell NUC too good use :)


    Anyway, yes an i3 is fine for 4k HDR, all processors have exactly the same graphics.