Posts by hagaygo

I can confirm that DD, DD+ , DTS are wokring on my setup (RPI4) with passthrough , The HD ones are being sent to the receiver in PCM.

Hi all,

Although its already being mentioned on other thread , i preferred creating new thread because i believe i have good examples to reproduce the problem easily.

Playback is just fine when subtitles are off (talking about text one , simple srt file)

But when subtitles are on , it seems there is frame skip(s) every time subtitle is shown (not while it displayed).

I have some test judder videos which i created a dummy subtitles for them (they are audio-less so audio output problem is out of the equation)

They are downloadable from https://drive.google.com/drive/folders/1ewxril7331dlillggkfnlkcg8qwrtxc1 (also uploaded 1 zip of single frame rate movie here)

There is a file for each frame rate (23.976-59.940) , the srt files have the same content just different filename.

When playing back the file you can notice :

1.First time subtitles is show (text is "line 1") there is a frame skip (i think this problem also happened on previous libreelec/rpi)

2.When "line 1" is removed , no problem.

3.Now , when "line 2" is shown there is again a frame skip , but since "line 3" and "line 4" are shown with a 1 second wait , it seems there is no frame skip.

4."line 5" comes after a longer break , so again a frame skip and so does "line 7".

In my setup , the skips are most noticeable on the 59.940 file (highest frame rate) but can be noticed also on the lower ones (30.0 and 25.0 seems to be harder to spot).

Please note that in order to check the files properly you need

1.Enable change refresh rate on playback start (so 24fps file will be used under 24p resolution)

2.Disable any motion interpolation/compensation on your TV/monitor if you have any enabled (Generally i don't recommend using it )

Hope this help in fixing this issue.

Please let me know if anything else is needed.

Just an update.

No problems since i set CMA=64M on cmdline.txt

I also tried the default GPU_MEM=320 and its works fine also.

So sum things up in order to fix the problem on default setup is just add CMA=64M on cmdline.txt file (under /flash/)

CMA=64M seem to work just fine with GPU_MEM=192M. (CMA=128M crashed)

Also with the test picture and my "real" pictures.

I'll keep my setup running and update here on any findings.

Thanks for the efforts.

Thanks for checking things up.

It seems you found the reason why RPI3 is handling the file with no problem, it uses the the GPU (and its memory) while RPI4 current code uses software and the RAM , thats why it needs much more.

As for sample images , you are right the the pictures that wont work are shot with professional camera and are about 60mpx.

I cant upload them (too personal, so i created "dummy" jpg and uploaded them to the previous shared link (https://drive.google.com/drive/folders/12susyfic64oqjida6va02vb6b3rj3vel)

They are called 35mpx.jpg , which is the smallest that worked with for me with gpu_mem=128.

The other one is 60mpx.jpg which is similar to the "real" one i have , and of course it doesn't work (might not work on 2gb also )

The RPI3 indeed works hard and it takes about 5-6 seconds to load the 60mpx.jpg file , but it does show it.

My worries is that the software decode is buggy (since it not used on other RPI's) , since i got occasional crash/freeze on library scans , which don't normally use big images.

Please let me know if you need anything else.

The picture viewer is just one of the problems and was "easy" to reproduce.

Library scan picks up images from time to time , and some thumbnails creation causes freeze/crashes also.

This scenario is much harder to reproduce since library scan are different each time (only runs on new episodes/shows/movies).

There is a problem in image decoding in RPI4 at the moment , and i got some images that causes freeze/crash even on gpu_mem=128.

The problem is still there on 4gb model , just "under the hood".

Thanks for the feedback.

Why only certain JPG causing the high cpu usage?

Seems kinda weird (to say the least) that 1gb rpi4 can decode 4k h265 video but crash when decoding single jpg file.

And btw my tv is 1080p only.

320mb is the default in libreelec , at least for 9.1.502.

256mb worked with all my tested h.264/h.265/4k videos , the comment on config.txt states that 288mb is needed for some videos.

128mb worked for me only for h.264 and few h.265 (no 4k no 10bit).

Still , it seems there is an issue with some JPG decoding which causes a lot of memory usage comparing to rpi3.

Little update : found few JPG which causes freeze/crash even with gpu_mem=256

What do you know , setting gpu_mem=256 (and of course 128) made the freeze/crash go away (so far).

Still , i believe it just "hides" the problem rather than really solve it.

I uploaded 3 videos of my libreelec behavior in each setup , they are available on

https://drive.google.com/drive/folders/1wxaorn-rtlmcgstgibq9mf5dmw7omzce?usp=sharing

rpi3b.mp4 = browsing the pictures on RPI3B running 9.1.502 , you can see the memory usage change is minimal.

rpi41gb 320gpumem crash.mp4 = browsing the same pictures on RPI4 1G with gpu_mem=320 (default) - you can see the far more rapid change of memory usage and then finally kodi crashes.

Rpi41gb Gpumem256.mp4 = browsing the pictures on RPI4 1G with gpu_mem=256 , you can still see the rapid memory usage changes , but no crash.

I guess you have RPI4 with 2/4gb memory that's why there is no crash on your end , but i am pretty sure the memory usage does exists you just have plenty of it.

The memory usage behavior happens only on certain jpg.

I found that when i take picture with gcam app on my one plus 5 it generate a "problematic" jpg , but when i use oos cam it generate non problematic jpg.

Thanks for the help so far and let me know if anything else is needed.

Some more findings :

1.Tested my setup with 9.1.502 on a RPI 3B (with rpi2 dist) , no problem with picture viewing and no freezes so far.

I guess its indeed only problem with RPI4 dist.

2.When enabling debug logging the memory usage on the OSD drop much more when viewing to attached jpg on the RPI4.

On RPI4 it drops like 50-60mb and then goes back up (if its not get freezed).

On RPI3B same pictures drops like 5-15 mb and goes back up. (and no UI freeze so far)

Its indeed problem with certain jpg types which also cause problem with some thumb nails.

Let me know if anything else is needed.

I have RPI4 1GB. (i see the posted links not working currently here is last log i have

Using default config.txt which means GPU_MEM=320 which leaves about 680mb ram for libreelec.

As i mentioned the test jpg i made are big , i uploaded them to google drive (all of them are 144mb).

You can download the images from :

https://drive.google.com/drive/folders/12susyfic64oqjida6va02vb6b3rj3vel

Even on clean install put them on local storage and just use the picture viewer to watch them one by one (with luck it will freeze on the first/second picture).

Thanks for your help so far.

Thanks for your feedback.

I posted full logs.(the log clearly show the time gap while freeze)

While in debug the memory status is on the OSD and while the freeze happens there is more than 450/500 mb free.

Also the problem is clearly happens on pictures viewer, i think the freezes not while viewing pictures related to thumbnails creation.

No I don't use it , My problem seem to be related to jpg proccessing which causes kodi to freeze/hang for few seconds/minutes form time to time or even crash.

Quote from patrik

So I got an new RB 4. Same problem.

But now I tested the output on 3 different devices.

On LG OLED, the original place of the RB 4 and were that worked 2 weeks, still no signal.

At my BenQ Pc monitor, signal.

At my old Samsung also signal.

I was using diffent cables, same cabels, diffent and same adapters.

The LG shows that "HDMI x is ready" but I didn't get an signal.

LG tells me, if other devices works, thats not their failure.

And idea from you?

Thanks

Display More

Did you try both hdmi outputs?

Here only the one near the usb power slot outputs a video.

If you mean xem the crypto currency then no (though i don't see the the relation to the subject).

Since my problem happens on clean/new install it not related to any addon setup/install.

Try on clean install/without library and check if there is no freeze on clean install, i think your issue is related to mine :

RPI4 on Libreelec 9.1.502 thumbnail/pictures problems

As described on LibreELEC (Leia) 9.2 Beta 2 i did more tests to reproduce.

Installed on clean sd card , enabled ssh and copied via samba share several test jpg files.

When entering pictures viewer kodi just freeze for 2-4 minutes , some times on start sometimes after few picture viewing and using left/right to switch and then usually kodi resumes or crash and restarted.

Also when new file arrived and libreelec picks it up for library scan , there is a freeze from time to time , My guess its the same problem as in the picture viewer

crash log link : https://hardbin.com/ipfs/qmfkkdmcqvtv1frpglaqnpjba7hfjj6wzgfz3fwzfantux/#eersvybgttl4ibz8nipsijaq5fwenj5hwx3rnkafrmkk

log link : https://hardbin.com/ipfs/qmby4ymkfixkmmp81vvzjtw7sqqe3shhygkvnzvtvswqfo/#bnorbtqrrzyexpoybfkmzjnxww5lirefyb199swpkuvs

I think there is a problem with certain jpg types , because with my old jpg files i never managed to reproduce the freeze.

each problematic jpg files i about 5-7 mb , i cant upload them here , if the logs are not enough i will upload them somewhere.

Thanks in advance for any help.

Tried it for about 2 hours of usage (RPI4 1GB).

Everything i am using seems to work just fine.

2 issues still persist from earlier builds.

1.Occasional tearing on KODI GUI (seems less frequent then previous builds)

2.Pictures viewer causes total system freeze (only power unplug releases it) from time to time.

viewing same pictures from file manager works just fine.

Also after restoring my backup from previous libreelec (RPI 3B+) i had same occasional system freezes until all thumbnail data was kinda refreshed.

So my guess there is some issue with picture loading/analyzing , tried to find something on debug logs , found nothing.

I assume i am not the only one with this problem since i can easily reproduce it with almost every jpg i try.

Keep up the good work.