Mango: Last I knew you had to write an output shader for mental ray to calculate this and it is not done by default. It is easiest to wrap this up into a post conversion script when you convert the file to scanline. In Nuke you can hit “x” and type “autocrop” and it will analyze the sequence and create a bbox which you can then write out.
This guy wrote a little tool called exr4nuke which does this automatically for you: There is a plugin for MR in Maya called “Mental Core” which allows you to write out scanline exr’s, embedded camera metadata (not sure about adding the bbox/datawindow). http://core-cg.com/ http://core-cg.com/documentation/refpasses.html#compositing-render-passes Also from doing some more research, it appears that Mental Ray defaults now to outputting scanline exr files with zips compression. I’m not sure which version though as even the nvidia people from the thread below think it is possibly in Maya 2013 but not sure if it actually made it into it: http://forum.nvidia-arc.com/showthread.php?9434-OpenExr-and-zip-scanline-compressions&highlight=nukehttp://forum.nvidia-arc.com/showthread.php?9434-OpenExr-and-zip-scanline-compressions&highlight=nuke ----- Deke Kincaid Creative Specialist The Foundry Mobile: (310) 883 4313 Tel: (310) 399 4555 - Fax: (310) 450 4516 The Foundry Visionmongers Ltd. Registered in England and Wales No: 4642027 On Thu, Jan 31, 2013 at 10:48 AM, Magno Borgo <[email protected]> wrote: > ** > Let me ask something related to the thread. > My EXRs coming from maya2013 /mental ray renders do not have bounding > box, am I missing some rendering option to get that? > > Magno. > > > > Well, as Deke mentioned, this option may just be applying ZIP > compression to the individual tiles, as opposed to buffering the tile data > and then writing a a scanline-based image at the end. > > -Nathan > > > > > -- > Magno Borgo > www.boundaryvfx.com > www.borgo.tv > Brasil:Curitiba:GMT= -2 (dst) > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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