Hello, here I am again with my h265 and CE problem. And in my opinion it’s not card related, because I bought a new SD card and problem persist. So I did a couple of tests and here is, what I found.
Everything is working great on CE9.2.5, no lagging, video is nice and smooth.
log: http://ix.io/2Tde
ce-debug: http://ix.io/2Tdf
CE 9.2.7 - problem is coming
log: http://ix.io/2Tds
ce-debug: http://ix.io/2Tdt
CE19 - problem persist
log: http://ix.io/2TdR
ce-debug: http://ix.io/2TdS
Setup is not changing, only CE versions.
result: I am staying on 9.2.5
Thank you for any help or advice
You said something different last time
I don’t know exactly what you mean and I am sorry for any misunderstandings.
Is there anything else I can do to solve this, more info or something like that?
I think you said that it was working on 9.2.6 then stopped and you wrote it was the sd card. But ok. Have you tried CE19 nightly already? There was a fix for h265 iirc.
Again, I’m sorry, I’m still learning in a short steps. My last CE19 log is from 19.0-Matrix_nightly_20210317.
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Do these playback issues only happen with “.mp4” files? Do you have any “.mkv” files to test. I had an issue with 2 particular .mp4 files, I would get a skip during playback when I upgraded to 9.2.6, 9.2.7 or CE 19. These files were perfect at 9.2.5. The skip always occurred in the same place, but it was a very rare occurrence.
There were 2 ways to fix it. The easiest was to use a free PC tool called “mkvmerge” to remux the .mp4 to an .mkv file - this only takes a few seconds per video. These mkv files playback perfectly with all releases. The second option was to make use of an “autostart.sh” file to set a particular value to 12 or 16 (your choice). The start of this thread is linked below. The second link details how remuxing from mp4 to mkv fixed it for me. Hope this helps in some way:-
check out wiki for advanced settings, you can configure to import / export watched status (and also resume points) then export your DB as separate files selecting only .nfo. kodi will then drop the nfo’s is same dir as the media it relates to. when you re-build your lib it will pick up watched / resume point status as before (and also keep the ‘added to’ date if you like to sort you movies by the date they were added…)
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if building back clean, backup nox from addons and addon_data, and also skin shortcuts from addonds and addon_data. drop them in after upgrade, then update the addons and you customization should still be there (provided you made the customization with nox gui) if you manually dropped stuff in (like i do with a custom ‘sky tv’ style pvr guide) those will be gone. if you are doing an in situ upgrade, customization made in nox gui should survive the upgrade…
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Hi everyone.
First of all, I would like to thank you for your wonderful work 
I have an X96 (S905X | 2 / 16GB) android box with atxexperience v4 (Android 9 PIE) firmware uploaded. Everything works OK on Android, while COREELEC does not work with 1 USB port (I need both).
I even brought an independent 5V power supply to the USB sockets and the portable drive can be heard that it works but there is no communication with it.
Is there any chance this will work? I am using device tree “gxl_p212_2g”
Regards and I am asking for help.
i think i have this also on two s905x Mini M8s, running ATVexperience4 and CE19. dont kow if issue was ther on 18, as i flashed ATVX4 specifically to stop lockups in CE19 with marshmallow undelying (which it did resolve). i use the ‘bad’ usb port to power the box from my TV, so not an issue for me. sounds like some issue with the bootloader with ATVX4 but dont know for sure. if you boot to droid does the USB port work?
Try this solution. And also read few posts above to get the picture about it.
I’m having this same problem on my N2.
I would be more than happy to help debug this, if still not solved. I’m still “combing” the thread to see if a solution has been provided
Hello, I tried one of your method to solve my problem.
I create an autostart.sh file in .config and write command into autostart.sh:
echo 16 > /sys/module/amvdec_h265/parameters/dynamic_buf_num_margin
chmod 777 autostart.sh
reboot
Unfortunatelly it’s still the same, playback is lagging, falling apart etc.
As I do not have mkv file, I gonna try remux my source video, but it will take some time. I am staying at 9.2.5 for now.
Thank you for advice.
EDIT: I tried to remux mp4 to mkv succesfully but it’s not helping.
You can update to nightly, it should be solved there.
It helped Everything works great. Thank you for your help: D
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Ok. About the sttutering Problem on some videos, I switched to nightly right now, and seems that the stuttering is gone from all the local files.
However, videos from the Netflix addon still shows stuttering (Tried with series “Lupin”).
Here are my logs:
Full LOG: http://ix.io/2Tjk
CE-Debug: http://ix.io/2Tjq
Checking my Full LOG, i see these messages as well:
2021-03-18 09:58:14.994 T:4791 INFO <general>: Display resolution ADJUST : 1920x1080 @ 59.94 - Full Screen (25) (weight: -39194917628997974097920.000)
I went to see my configuration for the refresh rate, and it shows 1920x1080 @ 23.98.
Does this means i should set it up to 1920x1080 @59.94?
Sorry, didn’t see this after I posted a follow up. It is solved for local files, as you said. Trying to figure out netflix addon now
Hello, now I experienced an odd thing, it worked great on first boot. CE19_nightly_20210318
log: http://ix.io/2Tjh
ce-debug: http://ix.io/2Tji
dmesg: http://ix.io/2Tjj
But after reboot it’s same old thing
log: http:// ix.io/2Tjn
From log all refresh rates are selected correctly.
I couldn’t help with netflix as I don’t use it. But the same part should work correctly.
I managed to download the LG HDR10 jazz video from youtube and I’m having the same problems as yourself - so you are not alone 
I tried changing to mkv and increase the buffer margin to 16, but both did nothing to help. The symptom is that the picture just cuts out randomly (screen goes black) and then comes back again. I downloaded the 1080p and 4k files from YT. Both files give problems but at different times during playback.
The 1080p is H264 and the 4k is VP9. Let me do some digging this evening.
I’ve never seen this before. I have hundreds of videos and all playback great. Could be an encoding issue??