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cameramanben / LUTCalc

Web App for generating 1D and 3D Lookup Tables (LUTs) for video cameras that shoot log gammas.
http://www.lutcalc.net
GNU General Public License v2.0
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OpenColorIO: Malformed CUBE format #3

Open sobotka opened 8 years ago

sobotka commented 8 years ago

OpenColorIO Error: The specified transform file 'foobar.cube' could not be loaded. Malformed color triples specified in Iridas .cube lut:'LUT_1D_INPUT_RANGE 0 16.293'

cameramanben commented 8 years ago

sobotka - you've got to give me more of a clue about the 'foobar.cube' file if I'm to respond. Also what software it is loading into?

I do know that LUTCalc 1D cube files work in all of the pieces of software and hardware listed in the presets, having tested them out. You mentioned Nuke in another post, that's not software I have access to but it could well be that Nuke is having a sulk about output values exceeding 1.0 in a cube file. I assume that the error is referring to output values rather than input ones. If it was having trouble with the input values, then it might be worth trying the Adobe/Lumetri/Speedgrade approch which would contain 'DOMAIN_MIN' and 'DOMAIN_MAX' rather than 'LUT_1D_INPUT_RANGE'.

Mind you those are just a guesses without any more info. Thanks,

Ben

cameramanben commented 8 years ago

sobotka,

have you had any joy with the LUT yet? If not could you upload the offending one made my LUTCalc and ideally if possible steer me to an exemplar that is known to work.

Thanks,

Ben

nick-shaw commented 8 years ago

If it was having trouble with the input values, then it might be worth trying the Adobe/Lumetri/Speedgrade approch which would contain 'DOMAIN_MIN' and 'DOMAIN_MAX' rather than 'LUT_1D_INPUT_RANGE'.

That is exactly correct. OCIOFileTransform in Nuke requires 1D cube LUTs with input range specified to be in the Iridas/Adobe format, not the Resolve one.

By the way, Ben, there is a Non-Commercial version of Nuke which is free. I think that since you would be using it only for testing purposes with LUTCalc, which is essentially non-profit, you would qualify for a non-commercial license.

cameramanben commented 8 years ago

Hi Nick,

thanks for the tip! I now have Nuke downloaded and installed, but not had a chance to play yet. More stuff to learn about ;-)

Ben