I just got some multichannel Zip1 compressed 16 bit half EXR files rendered with Mantra which were incredibly slow to read off the network.
I re-rendered them like for like in Nuke 7.0v6 to see if there was a performance gain. What I found is that the size of each frame went from ~170MB/frame to ~43MB/frame. That's definitely rendering all channels (about 36 individual channels), 16-bit half, Zip1 compressed in both source and destination images. I know that Nuke has not yet rolled in the multi part image optimisation that's in EXR 2.0, I'm certainly looking forward to that. But I'd be interested to kow howit could be possible that the file size has shrunk so much in the instance I described above. Cheers, Michael
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