How fantastically interesting! I suppose this explains why there is no B44A
option for compression type in Nuke as well since this was added more
recently as well.

I for one would be very interested in having access to the most recent
OpenEXR library working properly in Nuke.

I sent an email explaining the situation and what has been discussed here
to [email protected], so hopefully that should further the hopes of
this getting fixed.




On Sun, Mar 11, 2012 at 4:36 PM, fnordware <
[email protected]> wrote:

> **
> *Jed Smith wrote:*
> It seems like Nuke does not handle chroma subsampled EXR files properly?
> Is this a bug? Has anyone else experienced this problem?
>
>
> It looks like Nuke is actually using an outdated version of the OpenEXR
> library. Nuke, of all programs!
>
> The 4:2:0 Luminance/Chroma sampling was added to OpenEXR after the initial
> release. The library now provides a class that will handle the conversion
> to and from 4:4:4 RGB, but you have to be using a version of the library
> that supports it and be on the lookout for that situation.
>
> Something else I recently noticed: Nuke can't handle EXR files if they
> have channel names longer than 32 characters (at least the Mac version).
> This is another sign they're using the old library. OpenEXR originally had
> that limit, but it was expanded to 256 characters in 2007 with OpenEXR 1.6.
> Older versions of the library will reject these files.
>
> But the Luminance/Chroma stuff was added in 2004 with OpenEXR 1.2!
>
>
> Brendan
>
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