I have a couple slackware servers, slackwarearm current and x86_64 slackware stable all up to date.

I had OpenELEC/Kodi installed on rpi3 and was getting some playback errors on videos
from the current server but NOT from the stable server, the same videos.

I looked into what might be going on with OpenELEC and found it's not being maintained
and to use LibreELEC, which I tried and ran into the same situation.

I'm now trying OSMC and looks like same thing is happening.

I thought anything to do with playing music, videos, showing pictures was all on the
device Kodi is installed on.

This just started happening maybe like past two weeks.

I setup both servers on same device so I could follow what happens in the log
when each file is played and there's like frame rate this, audio that.

The files are identical, exactly the same. Forgot to mention they're nfs exports.

The only difference is the server, one is slackwarearm current, other is x86_64 slackware stable.

Obviously there's been large number of updates recent, not sure where/what to investigate. Thanks


EDIT:there are no playback errors connected to slackwarearm current server via main computer

What are these playback errors?

Means like same name, etc. But they are not same files.

From all information you have provided I'd conclude the file(s) are damaged in your current, for whatever reason.

explain to me if I download a howto video to main computer, copy howto video from main computer to stable server, copy howto video from main computer to current server, it's not same file

if I play howto video on main computer it plays fine, if I play howto video on main computer from stable server it plays fine, if I play howto video on main computer from current server it plays fine

if I play howto video from stable server through OSMC it plays fine, if I play howto video from current server through OSMC it plays does not play

It seems OpenELEC, LibreELEC, OSMC might have an issue with something that may have recently changed with slackware current as this was not an issue a couple weeks ago and many months before that, like a tweak to something I might need to do with current server.

You copy the file, the new location may have a bad sector on hard drive and your copy will be crippled as a result. By your logic, since it is the same file, both files are now broken.
I made the best guess possible based on information provided by you.
If you need further help please describe your "errors". What are they, network errors, picture rendering errors, etc. In case you are incapable to describe the problem you are having and are willing to pay my travel expenses I will come and look at it.

I checked out some videos that play and don't play, ffmpeg -i video.mp4 shows
on videos that don't play.

I don't know what this is yet, I do know that ffmpeg in slackwarearm current is 4.3.1 and stable it's 2.8.7, now I'm wondering if ffmpeg is involved in playback, I thought the server was just a storage location and the media server on the rpi did the decoding whatever stuffs for playback.

Guess I'm going to have to ask questions on some kodi forum.

Digging around, found this link NFS folder access problem where someone indicated:
Trying nfs mounts via fstab now, not getting any errors, seems they are performing better.