deadchip12 wrote: ↑Sat Apr 26, 2025 2:42 pm
Just used your files to test black crush.
SDR looked the most accurate—I could see all the flashing bars up to 65 from my seat (1.2m from the 65-inch TV). HDR10 crushed blacks more; in order to see the 65 bar, I had to move my face closer to the screen.
Dolby Vision was by far the worst—I could barely see past the 90 bar.
Then, I realized why. A few months ago, an update caused black screens in Dolby Vision to no longer appear as true black. Based on recommendations from forum users, I lowered the RGB-Bias to -4 in the advanced color settings to counteract this. When I raised it back from -4 to 0, I could see the bars up to 67 if I moved closer to the screen. So, it still crushes blacks more than HDR10 but is better. The problem is that black is no longer true black again.
Do you have any solutions for this?
If you can see 65 flashing from a normal viewing distance, your SDR black levels might be slightly lifted. If I'm not mistaken, you should see 66–67 flashing from a normal distance, and 65 only when looking about one foot away from the screen. Of course, all of this is in a dark room without lights.
As for the DV black crush, I have two TVs (cheap hisense and C2) and there is only black crush in cmv2.9.
cmv4.0 is good and the same as HDR10/SDR and my C2 RGB white balance is -2/-2/-2 to achieve perfect black in DV. This doesn't affect the black clipping at all for me.
Also, cmv2.9 is more crushed depending on MDL: 10 000 > 4 000 > 1 000
I've been reading a lot about TVs lately because I'm upgrading mine and I heard very often that Sony DV implementation is not very good so you might be better off watching HDR10.