LibreELEC 10.0.2 on RPi3B+ and performance

ace960 · March 18, 2022 at 8:10 AM

Quote from ace960

Hello. Is libreelec 10.0.2 gui supposed to run visibly slower than 9.2.8 on rpi3b+?
I have been using 9.2.8 (and before that older 9.2.x) for quite long time and the gui was just mooth.
10.0.2 looks much sharper but I can feel it is slower (like longer reaction time, something like fps drop, etc.).
note: I performed clean installation of 10.0.2 without loading backup from 9.2.8.

Quote from Tom_W

Same here. Have you seen the message while installing that config.txt. is incompatible as well?
GPU MemSplit option whithin config.txt wiped out by 10.0.2 ?
(Aehm: right place for this discussion ?)

I have not seen such message.

Quote from Libre888

I can't tell the difference for GUI. However, LE10.0.2 drops frames when playing videos on my RPi 3B+.

Interesting. Video playback appears to be OK on my system.

So, it would be good to know if version 10.0.2 / kodi 19.4 is more performance hungry or if i just needs some polishing.

Libre888 · March 19, 2022 at 1:42 AM

If you watch H265 videos, you will see the lags.

See this.

ace960 · March 19, 2022 at 2:57 PM

I do not have issues with playback (mostly H.264 video files up to BR 1080p remux and low quality 720p H.264 IPTV).

When I moved from 9.2.8 to 10.0.2 then the GUI appeared to be slower.

However, after few days it appears to be smooth. No reboot nor changes were applied.

So either I get used to it or ...I do not know.

H.265 - yes, I recall that. I tried to avoid H.265 on my RPi 3B+ as the performance was not consistent.

I suppose that the previous optimization for RPi2/3 used by kodi 18 will not be reworked for kodi 19.

I still have 1080p TV and most of the content I have is 1080p H.264.

Most of H.265 I found was at 2160p.

I found some 1080p H.265 which played well on RPi3B+ with kodi 18 but the picture quality looks somehow low, probably re-encoded H.264 file.

tkwou · May 3, 2022 at 7:14 PM

I recently switched to 10.0.2 from 9.2.8 with my RPi3B and I'm having problems with playback of older DVD material, MPEG2-SD streamed from a NAS. I'm getting a "Read rate too slow for continuous playback" error. The video stutters and I lose audio-video sync. I don't get this problem playing back MPEG2-HD material from Blu-ray sources. There are no problems with H.264 or VC-1 sources. This seem to be isolated to the RPi3B. I have PC Libreelec also on 10.0.2 and it plays the same files without a problem. I tried increasing the video cache size but it made no difference.

**popcornmix** · May 4, 2022 at 11:11 AM

Can you play the MPEG2-SD file locally (e.g. copy to sdcard or usb stick and play from there?)

We need to determine if it's a network issue, or decode issue.

How is Pi connected to NAS? Fully wired or wireless? SMB/NFS/other?

An iperf test may be useful between Pi3 and NAS.

Are you using built in SMB/NFS/other support or OS support (e.g. mounting network drive outside of kodi then playing from there).

tkwou · May 5, 2022 at 6:27 PM

Thanks. The Pi is on a wired connection to the NAS(Windows Server2008R2) on a gigabit network. The share is SMB through the Kodi. There is no problem playing even high bitrate BD(>35Mb/s) sources in .mkv format so it's not a network issue. Playing the file through USB stick causes the same problem so it must be a decode issue. File bitrates are <6500kb/s and from MPEG2-DVD sources. Interestingly MPEG2-HD files >20Mb/s from BD sources play fine. Were DVD and BD encoded differently despite being MPEG2?

**popcornmix** · May 5, 2022 at 6:34 PM

Are both SD and HD files interlaced? (or just the SD ones)?

Do they both report hw decode?

tkwou · May 5, 2022 at 6:51 PM

That's it. The SD sources are are interleaved top field first while the HD sources are all progressive scan. How do you check for hw decode during playback? I do have MPG2 decode enabled in my config.txt file.

LibreELEC 10.0.2 on RPi3B+ and performance

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