live tv stutters and out of sync

Daniel Morgan

Hi all, my TVH setup works fine but when you watch live tv, it can stutter or be slightly out of sync.
TVH client is viewed through the latest kodi on a Phillips Android TV.

What could be causing it? If you need any specifics please let me know. Thanks

DeltaMikeCharlie

Does it stutter or go out of sync when playing a recording?

Daniel Morgan

It does both, yes but not as much as watching a live channel interestingly 🤔

Flole

I'm seeing the same thing recently on a Philips Android TV with Kodi. I've had a quick look at the logs and found some audio-related messages in there and for me it seems to only affect the audio and it is only happening for live TV and not for recordings. In fact I can start a recording and then play it as a workaround. It's something that needs to be fixed at Kodi.

zapp -it

Flole That is a design issue of Kodi, i can not find the thread anymore but there where errors with the audio when playing live tv (audio changing in a commercial from 5.1 to 2.0 etc.) so they made a decision to threat live tv as a realtime stream. So if you look in the source of pvr.hts then you see the property IsRealTimeStream for recording and live.

Live:
kodi-pvr/pvr.hts/blob/dc8d521cd6506105f80405b6cb26bd4dfde18a45/src/tvheadend/HTSPDemuxer.cpp#L368

Recording:
kodi-pvr/pvr.hts/blob/dc8d521cd6506105f80405b6cb26bd4dfde18a45/src/tvheadend/HTSPVFS.cpp#L219
See the change of the property after 10 seconds.
kodi-pvr/pvr.hts/blob/dc8d521cd6506105f80405b6cb26bd4dfde18a45/src/tvheadend/HTSPVFS.cpp#L150

Urlaubsreif1980

Hey, i have a kind of same problem. I am usind Rpi4 and OSMC. I starded a thred on the osmc forum and maybe it helps to understand it. on the beginning the problem was the resolution of live tv and output, so i had stutters. for that i found a solution with the help of someone in the forum but i realised, that the stuttering begins after (about) 30 to 45 minutes.

here the discussion an osmc forum:
https://discourse.osmc.tv/t/live-tv-jerks/107985/23

Flole

zapp -it The problems only came up recently, so either this was a change that was done recently or there is something else wrong somewhere in Kodi for realtime-streams, at least on certain devices.

zapp -it

Edit: found the thread xbmc/xbmc19779 about the discussion.