yes that sounds like the issue.How did you auto detect the wrong channels - or
was this by hand.
Howard
>________________________________
> From: Jean-Paul LeDoux <[email protected]>
>To: Howard Jones <[email protected]>; Nuke Python discussion
><[email protected]>
>Sent: Friday, 18 May 2012, 19:09
>Subject: Re: [Nuke-python] EXR with badly named layers
>
>
>Hi,
>
>
>Not sure if you're getting your renders from Maya, but the unpredictable
>naming of your channels looks a lot like an issue we were dealing with when we
>started using Maya's pass system.
>
>
>(I hope I'm getting this right...) The OpenEXR verison used by maya prior to
>2012 only supports channel name lengths of 32 characters, and out of the box
>Maya builds it with it's pass-prefix, pass name and in some circumstances
>would tack on the camera name as well. If all that goes over 32 chars , it
>makes an unpredictable mess - and for us, sometimes the channel names even
>changed between images in a rendered sequence. This did not play well with
>the generic template system I was building for comp. :)
>
>
>For us, we got the cap on channel names coming out of maya(which included
>modifiying Maya's default 'RENDERPASSTYPE' values) , and then created a nuke
>post-process that runs the renders through nuke (detect channels, shuffle to
>new name, remove old channel, etc) and spits out every frame with lovely
>generic pass names (ie motionvec). This also had the byproduct of producing
>much more nuke-friendly scanline exrs too.
>
>
>Anywho, good luck!
>
>
>JP
>
>
>
>
>
>
>
>
>
>On Fri, May 18, 2012 at 1:51 AM, Howard Jones <[email protected]> wrote:
>
>Cool thanks - looks like there is something related in there.
>>Something for the 'to do' list :)
>>
>>
>>Howard
>>
>>
>>
>>>________________________________
>>> From: Deke Kincaid <[email protected]>
>>>To: Nuke Python discussion <[email protected]>
>>>Sent: Friday, 18 May 2012, 6:25
>>>Subject: Re: [Nuke-python] EXR with badly named layers
>>>
>>>
>>>
>>>Perhaps you can do it with the exr python bindings:
>>>
>>>
>>>Look here
>>>http://excamera.com/sphinx/articles-openexr.html
>>>
>>>
>>>
>>>
>>>On Thu, May 17, 2012 at 2:29 AM, Howard Jones <[email protected]>
>>>wrote:
>>>
>>>Hi
>>>>
>>>>
>>>>Is there a way to rename the layers from an exr file, Basically the file
>>>>should have say 'motionvec' but has come in as something like
>>>>'HGD_010_motionvec_2346745634756'.
>>>>So out of interest is it possible to rename these directly in the exr file.
>>>>My tests using a quick replace, so far create other errors in the file even
>>>>though layers have been changed - in this case 'Reader did not set bounding
>>>>box'.
>>>>
>>>>
>>>>I know its quicker just to reset our shuffles but I'm curious as to if this
>>>>is possible and if so how?
>>>>
>>>>
>>>>Cheers
>>>>Howard
>>>>
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>>>>
>>>>
>>>
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>>>
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>
>
>
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