Quote:
Originally Posted by A.Fenderson
I ran another test, again encoding via Handbrake, but this time bumping the bitrate to 50,000 kbps (and keeping source framerate intact), then burning to 50GB BD-RE DL. Source material, as before, is 8-bit (SDR) 4K 4:2:0 output from Sony FDR-AX53.
tsMuxeR didn't detect frame-rate, so set explicitly to 30000/1001 to match source file. Inserted chapter every 1 minute.
Burned the raw remux to BD-RE DL 50GB and attempted to play in XB1S: audio with no video.
Processed tsMuxer's output via TSM2UHD, burned this to BD-RE DL, and attempted to play in my XB1S: overall decent playback, with very occasional stuttering, though any attempt to skip chapters would lock up playback and force me to exit the BD player application entirely. Oddly, the bitrate readout of the XB1S very regularly showed bitrates far in excess of 50 Mbps, sometimes for several seconds at a time. It even hovered in the mid 70s for several seconds once. I don't know whether to chalk these issues up to simply a worthless implementation of bitrate monitor on that system, bad rate control from x265 (highly unlikely), Handbrake not properly passing the rate control parameters off to x265 (also seems unlikely), problems caused by encoding via the Handbrake GUI in the first place without explicitly passing the required parameters to restrict the encode to UHD compatibility, or something else entirely. In any case, to get meaningful results, I'm going to have to quit being lazy with these encodes to ensure the results meet UHD-BD restrictions.
jdobbs: If you will let me know which UHD-BD player(s) you are testing on, I will possibly attempt to purchase a proper standalone player of a different brand and/or model myself so that we can test across as many different players as possible: I've been wanting to get one anyway, and I think it would make for more valuable tests than using the Xbox. Is your Sony player the X800? Also the donation link in your sig doesn't auto-fill your email address.
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Just a note... I don't think 29.97fps is legal for 2160p. Below is a table I saw in the v3.1 White Paper that can be downloaded for free. Make sure you are setting the MAXIMUM bitrate to 50Mbs, not the average bitrate.
There may be something extra that is needed in order for 2160p chapter skipping to work that TSMUXER doesn't provide. There's already been a report of an extension for HDR that I didn't know about, so it wouldn't surprise me. I'll have to do some comparisons of the original and TSMUXER files and see what I find.
My UHD-BD player is a Sony UBP-X800.