RESET_9999 wrote:So I'm now even more convinced that 1, the dynamic metadata are working properly and 2 , the slight color difference with HDR10 is caused by the LLDV bug (because we can't capture tv-led)
*** appleTV files color issues is not related to this though
1- one of these sample RPU is synced properly and the other is out of sync.
you can see the brightness jump at the 4-5second mark.
https://drive.google.com/file/d/19xODV3 ... sp=sharing,
https://drive.google.com/file/d/1PepCc6 ... sp=sharing
2- Remember HDTVTEST Vincent video about tv-led vs player-led ??
well we captured the LLDV signal in PQ of the SM clip, and compared it to the HDR10 BL tonemapped in SDR. The difference is literally the same as in Vincent's video.
https://screenshotcomparison.com/comparison/16173
What I find funny and not very scientifically thorough is that he only tried one brand, Oppo I believe, and then blamed the results on LLDV instead of trying multiple sources that could do LLDV, like the Sony X800M2 to see if it was the player itself
OR LLDV causing the issue. He seemed to jump to conclusions that just because the Oppo caused this, it must mean ALL LLDV sources do this. That’s not sound science based analysis!
I had the Oppo 203 and the Sony X800M2 here shortly after I was the one who discovered this LLDV trick and the Sony was clearly the better device to use for Dolby Vision on otherwise non-Dolby Vision displays and projectors. Oppo had some sort of color bug that resulted in much less saturated colors. I believed and stated at the time that it was most likely due to the same bug that caused its tone mapping to only use Rec709 color gamut even if you chose BT2020 when using its SDR/BT2020 mode. Something to do with the mediatek chip if I recall.
I bet it also has to do with him not inputting custom Dolby Vision data block info like we do now, so the player then maps the signal to the exact specs of the display and/or projector, just as it does with TV-Led. If he didn’t use the right max nits, etc. then it results in improper tone mapping, meaning compression, which could easily have been the cause of these so called “issues”!
LLDV looks absolutely stunning here in my setup using a BenQ LK990 projector, new AppleTV 4K and an HDFury Vertex2 for the LLDV EDID spoof. I just watched Army of the Dead on Netflix last night in DV on my LK990 and it was probably the single best HDR/DV experience I’ve had!!! Pure eye candy with HDR effects that I’ve not seen on a projector before!!!