I am running several RPIs with OSMC 11.1/Kodi 18.9 as front ends for Mythtv 30 and utilizing multiple HDHomeRun tuners. I receive about 35 channels (mix of HD and SD), and all except four (actually one channel with four sub-channels) come in great.
The four channels that give me trouble are low definition and low power, but I get good solid signals at the tuners. These channels lose the synchronization between audio and video, the content stops and goes, sometimes pixelated in fits and starts. They are unwatchable and the longer I try to watch them, the worse it gets.
When I play the same channels/recordings through the Mythtv front end (or video players like VLC, etc.) they play perfectly so I’m thinking the problem is somewhere in the Kodi/OSMC end of the equation. This behavior is the same for live tv and recorded programs on the four channels but no other channels display this problem. If I resample/transcode the programming from these four channels (most simply by just “resampling” the recording over the top of itself) they play as expected and the quality is quite nice, but I obviously can’t do that with live TV. In the past, although I’m not exactly sure how far back, (maybe 1 or 2 versions of OSMC back) there was no problem playing these channels.
What suggestions can be shared to track down why these particular channels are not playing correctly in Kodi? I’ve been all over the setting in Kodi and tried adding filters, etc. in Mythtv but nothing works satisfactorily.