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Little BlackMagic Micro Converter SDi -> HDMI LUT format?

 
Author funkyworm
ZRO
Male
#1 | Posted: 26 Jan 2021 09:52 
I know it's a £39 / $50 cheapie, but has anyone had any success loading a .cube formatted 3D LUT into one of these converters?
I spent a fruitless few hours over the w/e trying lots of existing LUTs that I know work with Resolve and work in my FSI BoxIO but when loaded into the BlackMagic just cause the HDMI (and SDi loop when enabled) to show peak white across the whole frame.
The only information I can find online is that it should be a 17-point .cube 3D LUT but this is slightly problematic as ColourSpace does not offer a BMD 17-point .cube export - I tried making null (well, near null; 709 to 1886 conversion etc) at 21 and 24-points but you get the same effect; just peak white. If you go to 33-points or more the BM utility says the LUT is corrupt. Any other .cube exports from CS (so for AJA, for example) upset the utility in the same way.
It's possible BMD has completed arsed their implementation (would not be the first time!) but curious to know if anyone else has got one of these little boxes working with a LUT?

Author garrett
ZRO
#2 | Posted: 27 Jan 2021 00:43 
I don't have that BMD box to test with, but the latest version(s) of Resolve allow exporting a 17-point LUT which they say is for on-set monitoring, so I can only imagine it is designed to work with their boxes. So basically you'd have to export the LUT you want out of CS, bring it into Resolve and apply it to any kind of clip, then "Generate" the 17-point LUT from there and upload it to the Micro converter. Kind of a dumb workaround but it works with the free version you can download.

Author Steve

INF
Male
#3 | Posted: 27 Jan 2021 10:55 
I doubt very much that is the issue...
If you have a 'correct' LUT that works in the BMD box, import the LUT into ColourSpace.
If it imports, there is a matching export function for it.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author garrett
ZRO
#4 | Posted: 27 Jan 2021 16:56 
My test 17-point LUT out of Resolve opens in CS, so looks like there might be hope (assuming this file would have worked in the BMD converter).

Along with AJA it looks like Iridas and Lilliput have 17-point .cube options; guessing you tried those already funkyworm?

Author funkyworm
ZRO
Male
#5 | Posted: 30 Jan 2021 18:31 
So I raised a tech support ticket with BMD and they confirm that currently 3D LUTs don't work on the SDi->HDMI microconverter.

Author Steve

INF
Male
#6 | Posted: 30 Jan 2021 18:48 
Well, that's a bugger!

Steve
Steve Shaw
Mob Boss at Light Illusion

Display Calibration Light Illusion Forums / Display Calibration /
 Little BlackMagic Micro Converter SDi -> HDMI LUT format?

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