[matt.k]

Thanks, I'll look at the calculation when the file gets approved. I agree that this looks like a decoder problem, what I don't quite understand is why it happens with this particular encoder. The decoder can decode bluray rips with much larger bitrates (I've tested it with streams up to 30mbit/s that decoded properly).

I've tried disabling CABAC during encoding, it makes no difference. I've also tried to force the encoder to output High@L3.1 instead of L4.2, which it does, but with no impact on the decoding artifacts. I'm not sure why it outputs L4.2 by default, it is bit weird. The problem also persists with no B-frames in output stream.

Could buffering period or picture timing SEI have any impact on this? (though I tried both stripping the SEI from stream and recreating picture timing / buffering period SEI using tsmuxer without any result)