I’ve upgraded to kodi v19 and all went fine, but some videos are “slow” and audio and video end up not in sync.
What I see is this: at some point the video starts rendering slowly, audio continues to go at normal speed and gets out of sync with the video and the subtitles (the subs are in sync with the video, it seems, not the audio). If click pause, then the audio stops and video and subs continue for a few seconds until they match. Then, unpause and the video resumes and gets out of sync again.
This doesn’t happen with every second of the video, but it seems with some scenes that might use more resources or something only. Some other scenes of the same video play just fine, audio and video in sync.
In settings → player → video I have these options:
- Allow using DRM PRIME decoder: on
- Allow hardware acceleration: on
- Only allow acceleration for HEVC: off
- PRIME Render Method: Direct to Plane
I’ve used one video for the following tests, but this slow thing happens with other videos too.
I’ve tried using EGL as “PRIME Render Method” (it crashed when playing this video), “only allow acceleretion for HEVC” set to off, and also turning off “Allow using DRM PRIME decoder” and “Allow hardware acceleration” but it didn’t help.
The file is an mkv, running “file” on it just shows: Matroska data. I’ve installed mediainfo (as suggested here: How to submit a useful support request - General - OSMC) on my laptop and run it with the video in question, I paste the output at the end
While the video is playing, kodi uses 200-300% of CPU.
I’ve tried watching the video on my laptop and plays just fine, just in case.
This seems related to AVIs have audio and video out of sync after upgrade to Kodi 19.1, although this happens with MKV not AVI. It might also be related to this: Pi 3B+ deinterlacing in Kodi v19. But I don’t know about video to really know if deinterlacing is what is happening. This was also not any question of the FAQs when upgrading (Kodi v19 troubleshooting FAQ)
Here are logs grabbed with grab-logs -A: https://paste.osmc.tv/umopuneron. Note the last thing I did with debug logging enabled is “the interesting” one. Before I did it a few times, but without debug logs, and just changing the settings mentioned above.
When seeing the logs, I saw the kernel cmdline contained “osmcdev=rbp2” (probably I installed this on a rpi2 and then switched to a rpi3). I tried changing /boot/cmdline.txt to rbp3, reboot, /proc/cmdline shows rbp3 now, but (as expected) this doesn’t change anything: video is still slow
I tried to follow all guidelines and best practices to report this, but let me know if I missed something.
My gut feeling is that playback on the raspberry pi 3 is probably limited to this behavior on the time being and nothing else to do. But I’ll be happy to try any ideas you have, hopefully this can work!
If indeed it is a limitation with kodi and rpi3, do you happen to know if this should affect rpi4?
My Raspberry pi is this model (from /proc/cpuinfo):
Hardware : BCM2835 Revision : a02082 Serial : 00000000c4ffcde4 Model : Raspberry Pi 3 Model B Rev 1.2
Mediainfo on the video:
General Unique ID : 175059804920930726292591263721055257791 (0x83B34AC2D80501B4AD86085CA7E304BF) Complete name : [pseudo] Rick and Morty S01E07 Raising Gazorpazorp [BDRip] [1080p] [h.265].mkv Format : Matroska Format version : Version 4 File size : 236 MiB Duration : 22 min 1 s Overall bit rate : 1 498 kb/s Encoded date : UTC 2015-10-06 02:47:07 Writing application : mkvmerge v8.2.0 ('World of Adventure') 64bit Writing library : libebml v1.3.1 + libmatroska v1.4.2 / Lavf56.0.100 Cover : Yes Attachments : cover.jpg Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main@L4@Main Codec ID : V_MPEGH/ISO/HEVC Duration : 22 min 1 s Bit rate : 1 270 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Bits/(Pixel*Frame) : 0.026 Stream size : 200 MiB (85%) Title : Encoded with IFME v184.108.40.206 Writing library : x265 1.7+509-f4c267f28487:[Windows][GCC 4.8.2][64 bit] 8bit Encoding settings : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=3 / subme=3 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / no-early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=1200 / min-keyint=23 / scenecut=40 / rc-lookahead=250 / lookahead-slices=0 / bframes=8 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=0 / weightp / weightb / aq-mode=1 / qg-size=32 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=0.30 / rdoq-level=0 / psy-rdoq=0.00 / signhide / no-deblock / sao / sao-non-deblock / b-pyramid / cutree / rc=crf / crf=25.0 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.30 Default : Yes Forced : No Color range : Limited Color primaries : BT.709 Audio #1 ID : 2 Format : AAC LC SBR Format/Info : Advanced Audio Codec Low Complexity with Spectral Band Replication Commercial name : HE-AAC Format settings : Explicit Codec ID : A_AAC-2 Duration : 22 min 1 s Bit rate : 166 kb/s Channel(s) : 6 channels Channel layout : C L R Ls Rs LFE Sampling rate : 48.0 kHz Frame rate : 23.438 FPS (2048 SPF) Compression mode : Lossy Delay relative to video : 31 ms Stream size : 26.2 MiB (11%) Title : Track 1 Default : Yes Forced : No Audio #2 ID : 3 Format : AAC LC SBR Format/Info : Advanced Audio Codec Low Complexity with Spectral Band Replication Commercial name : HE-AAC Format settings : Explicit Codec ID : A_AAC-2 Duration : 22 min 1 s Bit rate : 58.4 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 23.438 FPS (2048 SPF) Compression mode : Lossy Delay relative to video : 31 ms Stream size : 9.20 MiB (4%) Title : Track 2 Default : No Forced : No Text #1 ID : 4 Format : ASS Codec ID : S_TEXT/ASS Codec ID/Info : Advanced Sub Station Alpha Duration : 21 min 56 s Bit rate : 156 b/s Count of elements : 532 Compression mode : Lossless Stream size : 25.2 KiB (0%) Writing library : Lavc56.0.100 ass Language : English Default : Yes Forced : No Text #2 ID : 5 Format : ASS Codec ID : S_TEXT/ASS Codec ID/Info : Advanced Sub Station Alpha Duration : 21 min 56 s Bit rate : 167 b/s Count of elements : 574 Compression mode : Lossless Stream size : 26.9 KiB (0%) Title : SDH Writing library : Lavc56.0.100 ass Language : English Default : No Forced : No Menu 00:00:00.000 : :00:00:00.000 00:01:09.152 : :00:01:09.152 00:01:41.018 : :00:01:41.018 00:09:09.215 : :00:09:09.215 00:20:39.572 : :00:20:39.572 00:21:09.560 : :00:21:09.560