tristansummers wrote:curious about this.
Have you asked on Colourspace forums?
If you only need HD you could go for the 3G which is newer and might work?
Which I was going to do...
I get confused if using Resolve as generator, as I think it does not make full range signals, Get the Raspberry Pi 3+ generator for full range.
Sounds like it could be a resolve set up issue?
Hi Tris,
Something I figured out last night and verified with external scopes also.
When you are using iTPG of Resolve controlled from ColourSpace via DeckLink output SDI/HDMI, with a video data timeline and ColourSpace patchscale 0-255, an LG OLED will receive 64-940 (video level patterns).
If we want to talk specifically, using a DeckLink Monitor 4K HDMI output with 2160p24 video timeline, LG will receive RGB 10-bit (or 12) when the SDI4:4:4 is ticked, and YCbCr 4:2:2 10bit with SDI4:4:4 unticked, when TV HDMI black level is at LOW.
LG OLEDs internally have 64-1023 LUTs.
So to generate these patterns, it will require PGenenerator or an external RGB bit-perfect generator.
However, I have found a method, which has verified with external scopes also to send 64-1023 patches from Resolve iTPG, but it will work only with a DeckLink card with HDMI output and only when its enabled the RGB output of the Decklink.
It will not work when you will use DeckLink SDI and then a Convertor to HDMI.
For DeckLink to able to send RGB, it will require to tick the SDI4:4:4 setting.
You can confirm that LG gets RGB using HDMI Diagnosis hidden menu.
When you want to calibrate LG internal LUT, ideally, you need to use RGB 64-1023 patch generation to match the internal LUT range.
For Resolve iTPG, to able to send 64-1023 patches, you have to set PC levels the timeline and add from ColourSpace as an offset to patchscale 16-255. (TV HDMI black level is at LOW.)
So iTPG of Resolve will work in 0-1023, and the ColorSpace will add the offset for the LG to receive 64-1023 patches.
The procedure us to pre-calibrate the LG with 64-1023 patches (Resolve SDI 4:4:4 ticked, Data Levels timeline + ColourSpace patchscale 16-255) and profile also. (TV HDMI black level is at LOW.)
After loading the 3D LUT correction to the TV, you can change the resolve timeline to Video levels, allow sub-black, and use ColourSpace patchscale 0-255, so the verification will be performed to 64-940 range. (TV HDMI black level is at LOW.)
Note, it will work only with DeckLink with native HDMI output without convertors, only with an RGB output, not YCbCr.
About HDMI Diagnostics Hidden Menu:
https://www.avsforum.com/threads/2019-l ... t-58775690