Video stutter and audio dropouts

I have a Vero4k and I’ve been having problems with audio and video stutter since the August 2021 update. Randomly I get skipped frames or the audio stops for a brief moment. It happens with both audio passthrough or when the the Vero4k is doing audio decoding. It happens with both 4k and bluray mkv movies. When there is an audio dropout it is usually for just a brief moment, but with the clip I provide a log for, the audio disappears and don’t come back until I stop the movie and start it again.

Here is the log:

The audio dropout happens around 16:55, 2022-05-08, about one minute before I pause the movie.

Did you install the latest updates?
I had some issues too - but these seem to be fixed with latest updates.

Yes, I have the latest update

In that case I rather suspect the data flow.
How is your vero connected? WiFi?

User is connected by wire. The logs show audio synchronisation errors. I for one don’t know why that should be or apply to both bluray and 4k. There’s a known bug when playing 4k with 44.1ks/s PCM audio but the video in the log is TrueHD.

Maybe @sam_nazarko or @tanio99 might have an idea.

During playback open your audio settings and change the audio offset back to 0 and then click on the set as default option. Stop and restart playback and see if the issue is still there.

I set the audio offset to 0, but I still got the same problem. Here is the new log

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From the log I can see that you’ve tested with the TrueHD Atmos audio stream. Does it also happen if you play that video with the other audio streams?

I tested with the 5.1 Dolby Digital stream for about 10 minutes and the audio didn’t drop out. I didn’t have time to test it more since it is getting late so I don’t know if there are problems later. Looking at the log file there still seems to be some sync errors, but I am no expert on analyzing the log.

How do you have your shares connected? I have them connected through fstab NFS but also get stutters (buffering issues too) sometimes. I read that mounting via WebDAV could improve things, you can try that for once!

I have it mounted via fstab nfs. Is there a guide on how to use webdav on the Vero4k?

It is quite straightforward. I installed the WebDAV server on my Synology and in Kodi just do:

  • Add source
  • Browse
  • Add network location
  • Protocol WebDAV server (HTTP)
  • Enter your Server Address (IP or name)
  • Use port 5005 or 5006 (I have a Synology)
  • Give your credentials for your NAS
  • Press OK
  • In “Browse for new Share” you see your new connection which you can use to browse to your media folder

Works good for me. Good luck!

I mounted the NAS with WebDAV, unfortunately I got the same problem. Any more suggestions?

Actually I am curious at @sam_nazarko opinion on WebDAV vs NFS :thinking:

The overhead for Webdav is definetly higher than with NFS so the performance would be lower.

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I noticed that it took a lot longer to open a bluray iso with WebDAV then when I used NFS.

Is there a factory reset or similar I can use to try to fix my playback issues?

Let’s test with Kodi default settings. Enter the following commands with an SSH connection.

systemctl stop mediacenter
mv ~/.kodi ~/kodi.bak
systemctl start mediacenter

If needed you can restore:

systemctl stop mediacenter
mv ~/.kodi ~/kodi.bk2
mv ~/kodi.bak ~/.kodi
systemctl start mediacenter

If your original setup was restored as expected and you want get rid of the unneeded clean install you can delete that with the following command.

rm -r ~/kodi.bk2

I reset to the default Kodi settings, but it didn’t help with my playback issues.