Re: [Openexr-devel] Quicktime & YUV

[harlan]

Yeah, precisely.  A Quicktime plugin for OpenEXR, essentially allowing 
any Quicktime app to import/export an OpenEXR frame or sequence of 
frames.  There are a few awkward issues with Quicktime, but think they 
can be overcome easily.  We'll definitely be looking into it since 
Quicktime serves as a large part of our pipeline.

On another note, we're more than happy to help out with YUV support for 
OpenEXR.  I'm not sure if anyone here has done much work with RGB to 
YUV color conversion, but I believe the accepted floating-point 
equation for RGB to YUV conversion is:

Y =   0.299R        0.587G   +   0.114B
U =  -0.146R   -   0.288G   +   0.434B
V =   0.617R    -   0.517G   -   0.100B

correct?  anyone?  bueler......bueler???

c'ya

harlan
Twilight Entertainment
address@hidden

On Thursday, January 23, 2003, at 02:11  PM, Drew Hess wrote:

> Hi Harlan, glad you like OpenEXR.
>
> Nobody I know of is working on a Quicktime plugin for OpenEXR (I assume
> that's what you're talking about, not support for generating Quicktime
> files from OpenEXR itself?), so if you'd like to give it a go, please 
> do.
> Sounds really cool.
>
>
> -dwh-
>
>
>
> On Thu, 23 Jan 2003, harlan wrote:
>
> > Has anybody given thought to a Quicktime I/O for OpenEXR?  If not,
> > we're looking at putting one together, but kind of wanted to see if
> > anyone else was doing anything similar before jumping in head first.
> >
> > By the way, thanks so much for OpenEXR - I've 'wasted' two complete
> > days playing around and digging through it.  :)  Pretty cool!
> >
> > Take care all,
> >
> > Harlan
> > Twilight Entertainment
> > address@hidden
> >
> >
> >
> > _______________________________________________
> > Openexr-devel mailing list
> > address@hidden
> > http://mail.nongnu.org/mailman/listinfo/openexr-devel
>
> .