So nothing fundamentally new regarding subtitle framedrops and aac and passthrough, etc.. judder until V.10.x?
Same here with and without subtitles, depending on audio format and a few other things. Found no long-term usable solution over the last few months.Until further development with the Pi4 software I fall back on my TV-player and or emby.
I mean no offense, LE/Kodi is great free software by volunteers, developed in their spare time, but with the RasPi 4 we still have to wait, I think...
BTW, even playback with emby for Kodi is much smoother and subtitles work without the frame drops.
In my experience, keeping at a distance the USB3 peripherals from the Pi4's ports gives noticeable benefits.
In my experience the "distance" of the Pi4 is a problem at all.
The WiFi of my AVR or of my Xbox nosedives if the PI is in range, I have to put it at least 2 feet away. Same problem with my wifi-sockets and and 2 2,4 GHz transmitters for Zone2 and my subwoofer. E.g., if i put the Pi directly on the X-Box, the wifi has heavy dropouts with overall10-20 KB/s instead of 100 Mbit.
Everything works again like a charme, if I remove the Pi4 from the cabinet.
I now separated The RasPi with 2 layers of tinfoil, with only a small exit for warm air et the top and put it in the corner of the cabinet. That seems to do it in principle.
Funny, the only thing with no problems is my Logitech 520 wireless keyboard that has no problems 5 meters away on the couch.
But after some time, all the issues were back.
Exactly the same with me. Weird thing is, the issues came back without(!) any software update or any change to the system at all! It just reappeared.
I'm done with RasPi4 for now and change to another player and the TV itself.
No change with the edid file form AV-R. I tried the edid data of the TV, connected directly to the TV and or the AV-R..doesn't work either.
While manually forcing edid.dat files, I realized another problem. The max resolution my RasPi scales seems to be 1920x1080. All above ends in a small unscaled picture on the TV. If scaling is done by another device, everything is correct. Please see attached picture (sorry dark, forgot the flash on my phone). The unscaled picture relates to the GUI and video, no matter which resolutions are allowed and other settings. 4K=1 allowed in config.txt.
I've watched some movies which had judder with MMAL other without-it.
So, your RasPi connects directly to the TV, without AV-Receiver?
Could you do me a favor: While judder and frame-dropping...can you switch off the TV (let the RasPi run!) and switch it on after 20 seconds again.
Does this make any difference and the judder is gone for a few minutes? Thanx, Greetings!
That's what happens to me at the moment: First I had the same problems you described in the first post, than I could get rid of it for a few weeks ( algorithmdirtyregions) and now all is back much worse.
Does it work, if you set Kodi to 2.0 speakers, pass-through enabled, and let Kodi encode the stream to AC3 (second point below passthrough)?
Did you uncheck HD-sound formats for testing and cable? New FW on NUC?
I have the same issue, 100 dropped frames recorded with 5.1 audio. Doesn’t matter if it’s pass through or not. Switch to 2.1 audio and it’s fine.
Are you talking with subs or without? I don't have audio problems any more (pass-through or not) since V 9.2.1 without(!) subtitles. AAC or AC3?
Even with subtitles, "algorithmdirtyregions and smartredraw" seemed to worked, but frame drops appeared out of thin air a few days ago.
Thanx very much, Klojum!
As far as I can say now, I can't see any difference, but I still have to check and report exactly...
But as I set the manual edid, I learned 2 other things:
1. In resolution settings there are all frame rates (23,97, 24, 25, 29,97, 30, 50 and 60) with 1920 and 3840.
But with 1280x720 there is only 29,97,50 and 60. The rest is missing, don't know why. So I forced Kodi to 1920 and higher and one part of stutter and judder is gone, the one without subtitles in which Kodi played 720p files with wrong frame rate. That's a start, don't you think?
As I said, I have no idea, who doesn't give my 720 with 24 or 25 Hz. Maybe Denon?
2. You can choose resolution for each file in the submenu while already playing. But when I change this, let's say I play 720p and change it to HD or UHD, the screen doesn't render it 100% but i see only a small picture in the top left corner. I don't know, if Kodi, AV-R or LG-TV is the problem. If I restart the file, Kodi remembers the new forced resolution, but only to 1920 and gives me a full-screen picture.
The third point is, that picture quality is excellent with low resolution files, if Kodi is scaling from 720 to 1080 and the TV does the rest from 1080 to 2160! Even better than if the Denon (3400) does all the upscaling or the TV does it alone. I have nor idea why this can be...but for all the people in Yurop, who often still have TV or recordings in e.g. 720 - try it out!
Thanks, I am testing right now....
Regarding my problems like in this thread ( LibreELEC 9.2 beta 1 video judder and stuttering. ), I made a discovery yesterday.
My video stuttering and the frame drops with subtitles are back these days. I don't had the slightest clue why, because there was no change of any kind. There are even micro-stutters as an extra every few seconds, very similar to the 23.97 framerate problem. The subtitle drops are nearly a second long and much worse than in the old thread.
Now I realized that these things disappear, if i change the order in which I power on the devices:
If the AVR and TV are already running and I switch on the Pi: Stuttering, in 90% of the cases.
If I power on the Pi first and second the TV and or AV-R: Everything fine.
Is this possible or a coincidence?
TV is a LG UM7450 model and AV-Receiver is a Denon X3400H with PI4. No log yet, Pi3 still works flawless in every case, no matter what device I power-on first. Checked HDMI cables - no difference. What the hell is going on in my living room?
Thanks. Stay safe everybody!
Ha. This solution seems to be working for me too...Great, I love you..kind of
Did anybody report the audio setting stutter problem related ro rpi4 to kodi/xbmc already? I looked at the issues on the xbmc github, but did not find anything related, so I'm wondering if anyone of the developers is aware?
I only asked in the official Kodi Forum without answers.
Seems this is the only entry in Githun Bug Tacker, but closed because of ignored rules
KODI 18.5 playback still stuttering ONLY with subtitles · Issue #17001 · xbmc/xbmc · GitHub
So there is no open issue.
I'd wait still a few month until further SW development, but overall everything is working. If you are a "subtitle guy" - don't even think about replacing the Pi 3!
Besides the subtitle problem, 9.2 still has the stutter and judder with aac audio. AC3, Dolby and stereo are fine!
Only solution that works is to switch to 2 channels and or let Kodi convert aac to ac3.
Pi3 works still fine with Channels set to 5.1 and decodes AAC to PCM 5.1 which shows as "Multichannel in" on the AVR...
Damn, that's bad news. I'll install 9.2 in the evening nevertheless...
I know subtitles aren't first priority or maybe it's a complicated problem, but I hope for the hearing-impaired that this will be fixed with the next release. Or better: For the people who live with hearing-impaired a la "don't you dare turning the ST off, you ignorant egocentric" (which would be me)....
Oh, so it's a Kodi problem, platform independent....can't find any threads in different Kodi forums. We should start reporting, maybe they haven't got a clue what's going on?
Indeed it is a big issue, anything with subtitles is "unwatchable"...