Hi All, I was wondering if anyone here has any experience with Y RY BY B44 compressed EXR files in Nuke?
Luminance / Chroma B44 compression is described in the EXR Technical Introduction <http://www.openexr.com/TechnicalIntroduction.pdf> (pg 11) as an optimal compression scenario for fast playback when quality is not of paramount importance. Seth Rosenthal of Tweak Software describes this further here<http://forums.thefoundry.co.uk/phpBB2/viewtopic.php?p=10728&sid=c0eebef390b2c03be3a798d640e2f3ac#10728> . The only way so far I've found to compress Luminance/Chroma EXR images using off-the-shelf software is using the built-in ProEXR compressor in After Effects CS5.5. When I try to read these images in Nuke, the Y (Luminance) channel comes in okay. There are two other channels, Other.BY, and Other.RY When I try to view these channels, I get a red error message at the top of the viewer saying "X and/or y subsampling factors of "BY" channel of input file "file" are not compatible with the frame buffer's subsampling factors." It seems like it would be useful to be able to use this compression type in Nuke, for a lot of different purposes. Has anyone gotten this working?
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