Posts by popcornmix

Quote from tekno

I installed Kodi 20/IPTV Simple on a Windows machine and found the exact same limited resolution playback (720p) so the Bug goes back to Kodi not LE. It is worth noting however if you ever post on the Kodi forum and so much as mention Libreelec you are likely to be attacked for trying to get support for LE on a Kodi forum, even if you have already found the same bug on Kodi (without LE). I therefore leave it in this forum's capable hands

If this is true, then why not report the Window form of the issue?

In general, to get the right developers to see an issue, report kodi issues on the kodi and libreelec issues on the libreelec forum.

2023-02-01 22:07:24.107 T:1143     INFO <general>: VideoPlayer: OnLostDisplay received

I suspect this message is hotplug related.

Not sure if a dodgy cable is causing spurious hotplug disconnects, or the TV is generating them for some reason.

With LE11, try adding (make sure you are using first hdmi connector - closest to power socket) :

video=HDMI-A-1:D

to the end of cmdline.txt (on same line).

If that doesn't work, try:

vc4.force_hotplug=1

instead.

I'm curious. What is the format of your 3d videos? e.g.

half-SBS

half-TAB

full-SBS

full-TAB

MVC

AV1 is a very new codec, and there is no hardware decode support for it on Pi400 (or any Pi models).

What you see is software decode, which won't handle full hd (1920x1080).

You may find lower resolution samples work okay (perhaps 1280x720@24), but that is probably the limit.

Quote from ciclista71

Didn't know, but I am using an headless raspberry, how can I show such debug info then? Sorry for my ignorance

I don't understand. How do you know "Video freezing whilst Audio continues" if you are running headless?

(headless means without a display, so no video to look at).

The debug info I'm suggestion is from kodi, while you are watching the video stream.

Player process info - Official Kodi Wiki

ctrl-shift-o shows useful debug info.

The "Player: a/v:0.01 forward 14.88MB 100%" line is pretty useful.

A/V is audio/video sync and should oscillate around 0 (usually not exeeding -0.1/+0.1

The forward and percentage numbers show how much data is encoded data is queued up - if that heads towards 0 you go into buffering mode and kodi doesn't handle that well.

Do you see video queue go down to zero before issues happen?

I think kodi just doesn't recover well when switching into and out of buffering where there isn't enough network bandwidth between the client and server.

I used to have issue like this when using a wifi connection, but it's been perfect since switching to wired.

It would be useful to confirm if the issue is reproducible from a recorded file (played through file interface of kodi).

If it is we can investigate the file.

Quote from @fterlife

Using your build I'm getting a picture here at boot without any workarounds.

Thanks for report. If anyone else can confirm it would be helpful.

The potential fix is not merged yet, and more positive reports would help it get merged.

You say LE9 used to work? Can you reproduce that now?

If it used to work and doesn't now, then it sounds like a hardware issue.

If the pi and cable can drive the PC monitor then it sounds like the issue is at TV end.

If there are multiple hdmi sockets on TV then try them all.

Post current contents of /flash/config.txt and /flash/cmdline.txt

The obvious error in your log is:

апр 11 19:28:42 server kernel: [drm:vc4_bo_create] *ERROR* Failed to allocate from CMA

and the related:

апр 11 19:28:36 LibreELEC kernel: cma: Failed to reserve 256 MiB
апр 11 19:28:36 LibreELEC kernel: Kernel command line: coherent_pool=1M 8250.nr_uarts=0 cma=64M cma=256M video=HDMI-A-1:1360x768M@60 smsc95xx.macaddr=E4:5F:01:81:78:7D vc_mem.mem_base=0xec00000 vc_mem.mem_size=0x10000000  boot=UUID=0607-1118 disk=UUID=dcad1c13-ae95-4d08-935d-befe971ffab6 quiet root=/dev/ram0 rdinit=/init usbcore.autosuspend=-1

Now, kodi 18 was awkward on Pi4, as gpu_mem is used for 3d textures, and cma is used for hevc decode,
and it's a bit of a juggling act to get both memory pools to be happy. In your case it's not happy.

Kodi 19 uses kms, and 3d textures move from gpu_mem top cma, which makes like much better.
Leave gpu_mem as a default, then you can give a decent chunk (e.g. 512M) to cma and everything is happy.

You can continue juggling with gpu_mem and cma settings on kodi 18, and you may get a satisfactory balance.

But moving to Kodi 19 is likely to just avoid this issue completely.

Have you enabled "Adjust display refresh rate" in settings/videos?

Not having that enabled is the main reason for judder.

I also run with all TV motion smoothing settings off and everything is perfectly smooth.

The cmdline.txt settings for video are just standard linux, not pi specific. See here:

modedb default video mode support — The Linux Kernel documentation

or

Kernel mode setting - ArchWiki

Quote from pitri

I am starting to think it can be caused by some physical default on the board and I don't like the idea as they are out of stock evrywhere at that moment

If you plug in to display and power on a Pi4 with no sdcard inserted you should see a diagnostic display. Does that work?

That will help confirm if there is a physical defect.

LE 9 is very old, and won't get any any fixes. Try updating to Matrix.

Does unplugging/replugging hdmi cable fix the blank screen?