Posts by HiassofT

I mean test the publicly available demo files and tell us which ones work and which ones look different. Taking a picture with your phone won't hurt, though it's rather hard to tell from the picture if something's off.

If you can tell us eg if "Samsung Wonderland Two HDR UHD 4K Demo.ts" from 4kmedia.org shows identical output with kodi, plex, ... or not that would help.

If you can't reproduce the issues with the publicly available samples it may be somthing specific to your file(s). In that case you'd need to cut out a short 20-30 seconds sample and upload it somewhere so we can try to reproduce - also make sure you test with the cut sample to rule out issues with the cutting software.

so long,

Hias

Quote from AriaTwoFive

It does show HDR.

I flashed the file through the /storage/.update/ folder, enabled debug, rebooted and started the movie. Here the log:

Thanks for the log, dynamic range infoframe seems to be sent fine, not quite sure what might be going wrong.

Can you test with some publicly available samples, eg the ones from 4kmedia.org (4k HEVC 24fps ones should work well), and/or upload a short 20-30secs sample? Then we can try to reproduce it and have a closer look.

so long,

Hias

AriaTwoFive could you give the build from the very first post a try (it contains additional logging in the kernel driver) and then post a "pastekodi" log?

so long,

Hias

Quote from macgyverel

I have question about 4k30. I have mp4 files h264 and files not working. Only music/sound. Thumbnails are genereted but no video - black screen. What is wrong?? Rasbery Pi 4 4MB. Output resolution on HDMI is 1080p. Kodi should scale 4k to 1080p.

4K working if I disable DRM Prime Hardware Acceleration, but video is stuttering.

The RPis support hardware decoding of h264 only up to HD resolution and only 8bit. 4k / 10bit hardware decode is only supported for HEVC.

RPi4 is too slow to software decode 4k h264 files and software decoded 10bit videos aren't supported by kodi's DRM prime renderer yet - there's a PR to add that but it's marked for Kodi 20 DRM PRIME: allow using multiple layers by lrusak · Pull Request #19140 · xbmc/xbmc · GitHub

so long,

Hias

aakister not quite sure why 4k HDR didn't work for you, the kodi log looked fine.

Can you please post a "pastekodi" log? Run the "pastekodi" command on the shell or use the logfile upload function in LE settings and post the URL.

A link to a short sample (20-30 seconds will do) that shows these issues would also be great, then I can try to reproduce it locally.

so long,

Hias

JohnWayne111 just talked to RPi devs but you might not like the answer:

RPi4 doesn't have hardware support for HDR-to-SDR tonemapping, it might be possible to tweak things a bit but the result will always be off - either too dark or too light.

Simple solution: don't use HDR encodes if you don't have a HDR display.

You could also try to re-encode the HDR files on your PC, ffmpeg (and probably other encoders) should support that with tonemap filters (never used that myself though).

so long,

Hias

AriaTwoFive have you checked if the Plex player on TV and Kodi used identical picture settings?

On my LG TV picture settings (brightness, colour temperature, "optimizations" etc) can be configured independently for internal player(s) and each HDMI port - and it's quite easy to miss that they might be set differently.

If you have another player app on your TV (eg to play from USB media) or some other external player it'd also be interesting to cross-check with these.

As it's bleeding edge code I wouldn't rule out that something is off a bit, but we also have to make sure we don't compare with a player/source that applies different video settings.

so long,

Hias

I already answered that here RPi4 Libreelec 9.2.2 Hunds up on loading info (pics) in DB and if I read your last post correctly you confirmed that the nightly build worked better.

The log also shows that you haven't reduced GPU and CMA memory, so the OOM-killer is kicking in because you run out of memory - a well known limitation of 1GB RPi4 on LE 9.2 (just search the forum for more info).

so long,

Hias

JohnWayne111 HDR to SDR tone-mapping is a completely different beast, purpose of these testbuilds is to check if true HDR output works fine.

so long,

Hias

Here's a new testbuild with HEVC decoding fixes: LibreELEC-RPi4.arm-9.80-devel-20210210171544-68ac68f.tar

Some HEVC files showed pixelation artefacts (decode errors) and the "Samsung Wonderland Two" demo from 4kmedia.org resulted in a hard crash because the decoder ran out of memory. The HEVC decoder now handles out-of-memory situations much more gracefully and we've increased the default CMA memory size to 512MB so the file can be properly decoded.

so long,

Hias

Quote from wanderlei

I noticed on mine the config.txt only had gpu_mem=76 so I bumped it.

Keep it at 76, it's been changed to that for a reason. New graphics stack needs CMA, not GPU memory, and at best you'll just waste memory, at worst you'll run into crashes because of memory exhaustion.

so long,

Hias

Thanks for reporting, I've PR'ed the zattoo update, if things go well the updated addon should be in our repository soon.

[le92] kodi binary addons: update to latest Leia versions by HiassofT · Pull Request #5125 · LibreELEC/LibreELEC.tv · GitHub

so long,

Hias

Sorry, I can't give an ETA.

Current priority is to get the hardware video decoders into shape (there are still some bugs to iron out), after that the HW decoder developer may have time to look into RPi3 HEVC decoding again. But that won't be an easy task, lots of things have to be changed so this can take some time.

so long,

Hias

LibreELEC 9 (and earlier) contained a GPU accelerated HEVC decoder - this hasn't been ported yet to the new graphics stack of LE 10.

so long,

Hias

wanderlei there's a bug in kodi (or ffmpeg) which can crash kodi when seeking in a file with True HD audio, see Crash while seeking video with TrueHD audio · Issue #16096 · xbmc/xbmc · GitHub

I just tested with the file linked from the bug report and got a crash, too

so long,

Hias

Quote from wanderlei

WIFI 5GHz

bladerunner it buffer at couple minutes but them continue to play. Skip ahead and kodi crash (black screen with build number) back to GUI. TV stuck in HDR mode back in GUI.

Wifi dunkirk, buffer every couple minutes, load then play on.

WIRED

Froze with blue screen for several minutes then came to life when trying to access files.

bladerunner buffered at start, crashed back to GUI in a minute and was unresponsive, had to unplug to reboot.

dunkirk played ok for two minutes then buffering and stuttering.

try the revenant and it stutters too. this file under 20GB.

http://ix.io/2OvS (and attached)

When does play it is doing HDR.

Display More

From you log file it looks like you have a broken ethernet cable, the network link is constantly breaking down and coming up again. Please create a separate thread if you can not solve that issue (eg by replacing the cable).

so long,

Hias

Quote from Sanity

Thats what i did this morning, went from LibreELEC-RPi4.arm-9.80-nightly-20210130-0b9711c to LibreELEC-RPi4.arm-9.80-devel-20210205165343-b642f3c but HDR wont kick in for me when testing. everything else works fine but no HDR. works fine for the rest of my equipment and UHD mode etc is enabled.

Will test around some more but atm no luck.

Not much we can do about it unless you post logs. Please also post the edid of your screen - run:

cat /sys/class/drm/card0-HDMI-A-1/edid > edid.dat

and attach the edid.dat file

so long,

Hias

Please do a fresh install with the latest nightly on a separate card and then update with the tar in this thread - upgrading from 9.2 is not supported.

so long,

Hias