I've tested a recording (FHD channel) (.ts file) created with the latest, current, MOL2 version 7.5.6 and then analysed by ffmpeg 4.2.1 and it seems the original .ts files are not following some h264 standards.
See ffmpeg log/output attached.
non-existing SPS 0 referenced in buffering period
SPS unavailable in decode_picture_timing
non-existing PPS 0 referenced
PES packet size mismatch
reference picture missing during reorder
Missing reference picture, default is 65557