Digging deeper into what’s going on, there’s definitely an issue with their MP4 files being created by the new software. If you want you can run their MP4’s through a software called MP4 inspector and if the MP4 is compliant with the specs it’ll give you a clean chit. In this case the recording uploaded by you showed that the MP4 file created has a problem with the moov atom structure. The moov atoms are critical to MP4’s because they contains all the information about what to find where and how it should work. In this case since PlayOn is creating a defective MP4 moov structure when ffmpeg (and MP4 Inspector) accesses that information it’s can’t get what it needs causing the video stream to drop out (infact ffmpeg also complains about missing video metadata after trying to cut a few seconds because it needs that information to resynchronize the video stream after cutting).
Here’s the output from MP4 inspector showing the defective MP4 moov atom structures. Maybe this will help PlayOn relook at their answer.
I am not surprised by PlayOn considering it not a bug. For some interesting reading go read the Reddit r/playon there is years and years of neglect and complaints about the games they play. They are not a large company at all.
This is PlayOn Cloud for me. Until I have fiber out here Greenville TX, I don’t use the PC version any longer. Too glitchy.
My work around has been using VideoProc with the copy option turned off so every bit has to be captured and converted into a fresh file. I just lose the chapter markers.
