[QUOTE=K.i.N.G;1854914]The 32bit exr's that are available seem to have the 709 grading baked in indeed (which is weird) but its not that big of a deal since they kept the dynamic range and full exposure info in there (they aren't clipped). So, no problems there.
Those exr's seem to be saved in 'only' 1080p though...
I am sure there are UHD ones as well. I think I downloaded them once some years ago. Maybe off an FTP?
My .y4m was generated from the 16-bit PNG sequence.
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CGI data is pretty much ideal. It doesn't get any better than that.
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The final has film grain added to the CGI, but if the EXR is clean plates, awesome!
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Of course you always have those people who render everything clipped and bake weird color corrections right into the renders, that's another story. But that also happens with video footage, so no difference in that regard.
CGI with the rec.709 profile baked in is still miles easier to work with than video footage with the camera's color response + some custom curve baked in though.
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My understanding is they didn't do anything specific to prevent >>709 things from happening. But they did all the work in 709, so wouldn't have known or worried about if anything in particular was clipped or whatever.
It would be awesome if someone put in the time to do a HDR master! From what you've found so far, it might not even be that big a project. Maybe a day or two for someone with the right skills, software, and hardware. Two days to remastered an hour show to HDR with decent sources is pretty luxurious, and this is only 11 minutes.
But anyway, I'd
love to see anyone else's best encodes with the SDR clip, in x265, different HEVC, or even other codecs. In particular, I'd love to see a VP9 expert's best VP9 effort.