Agreed. But at the same time I would say most DI apps should already be supporting multi-layered OpenEXR files by now.
-diogo On Fri, Nov 18, 2011 at 7:44 PM, Randy Little <[email protected]>wrote: > Most DI apps do now support RGBA DPX files. its a matter of what flavor > of DPX that differers. Even Lustre which is RGB uses backburner to stripe > the alpha and nest it alla flame style alpha nesting. So its pretty > important that Nuke support this correctly. I get asked for alphas and > when grading ask for alphas all the time. > > > Randy S. Little > http://www.rslittle.com <http://reel.rslittle.com> > > > > > On Fri, Nov 18, 2011 at 15:55, Deke Kincaid <[email protected]> wrote: > >> Most DI apps and film out will error on dpx files with an alpha. Same >> with the wrong endian order. >> >> ------ >> 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 Nov 18, 2011, at 16:37, Michael Hatton <[email protected]> >> wrote: >> >> DPX specification does support alpha - see 'Image Data' here - >> http://www.cineon.com/ff_draft.php >> >> >> On Fri, Nov 18, 2011 at 9:03 AM, John Vanderbeck < >> [email protected]> wrote: >> >>> That was always my understanding. That DPX (being originally based CIN >>> for delivering film scans) did not support an alpha channel.**** >>> >>> ** ** >>> >>> *From:* [email protected] [mailto: >>> [email protected]] *On Behalf Of *rahul kv >>> *Sent:* Friday, November 18, 2011 12:30 AM >>> *To:* [email protected] >>> *Subject:* Re: [Nuke-users] Re: Alpha problem in DPX 2K 10-bit**** >>> >>> ** ** >>> >>> I might be wrong but is DPX format not intended for delivering Alpha? ** >>> ** >>> >>> ** ** >>> ------------------------------ >>> >>> *From:* terence_fdes <[email protected]> >>> *To:* [email protected] >>> *Sent:* Friday, 18 November 2011 10:56 AM >>> *Subject:* [Nuke-users] Re: Alpha problem in DPX 2K 10-bit**** >>> >>> *Srikanth wrote:* **** >>> >>> Check this earlier discussion : >>> >>> http://forums.thefoundry.co.uk/phpBB2/viewtopic.php?t=358&sid=d31e65d874f2e8ea95a0723b5e4fa8d5 >>> >>> it might be useful for you! >>> >>> -sri >>> >>> Quoting vfxsrini :**** >>> >>> *Quote:* **** >>> >>> Alpha problem in DPX 2K 10-bit >>> >>> We wish to deliver dpx files in 2K 10-bit [2048 x 1156] with an alpha >>> channel >>> where 3D elements/characters. Basically, it would offer them better >>> control in the DI >>> >>> When we Write a DPX from Nuke with the alpha activated in the write >>> node, the resulting image shows up on Avid DS-Nitris or Fusion is a >>> black & white image with scanlines.In nuke it showing proper. >>> >>> Is this a bug, is this not supported or are we just missing something. >>> >>> In any case, what can we do to offer the best image quality to our >>> client. >>> >>> Note: On earlier projects when we were outputting to HD [1920 x >>> 1080] we never >>> faced this problem with DPX files. We also tested tiff with alpha @ 16 >>> bit >>> [2048 x 1157] & DPX 2K in 8-Bit - both had no problems. >>> >>> >>> >>> **** >>> >>> >>> >>> The earlier discussion ended up without any solutions & it was posted >>> way back in June 2008. Apparently this seems to be a bug in Nuke and we >>> would really appreciate if a quick solution is found. >>> >>> NOTE: The problem arises when working with CGI elements alone and output >>> in "DPX 10-Bit". If one choses to output in dpx 8-bit then there are no >>> problems with alpha. However chosing 8-bit is a dead loss and not a >>> practical solution when outputting at 2K resolutions - in this case 2048 x >>> 1157 for a Animated Feature Film. >>> >>> Can the Foundry Software development Team look into this at the earliest >>> >>> Thanks**** >>> >>> ** ** >>> ------------------------------ >>> >>> >>> Avid DS Nitris Colorist**** >>> >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users**** >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > > > _______________________________________________ > 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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