francebb / videotek Goto Github PK

I like your work, and often use VideoTek. But there is a great mistake at the line for 75 % HLG signal level. The scale is linear, the nits are nonlinear.
0,75 * 0.7 V = 0.525 V But the line position is much higher than 3/4 level!

In the script you did the calc like
y = (362 - 20)/4 = 342/4 = 85,5 -> 85
Then
y= 85 - 20 = 65 WRONG! -> Y = 85 + 20 = 105

More exactly it is
y = (396 - 32x2)/4 +32 = 332/4 +32 = 83 + 32
y = 115

Minus font shift 12 of subtitle line ___
y = 103
Text y = 107

With this value my HLG movies show the right levels, and you can see the correct 75 % line.
I’m frank from Doom9.
My account was hacked in January 2023, and now I’m banned. I don’t no why, and cannot reach an admin.
Best regards
Frank

As far as I can see, the new nits type does not work for the PQ mode.

Hi,

Is there any way to get live video source from decklink sdi.

Regards,

Fahad