[Theora-dev] Problems with Theora DirectShow filters

David Barrett dbarrett at quinthar.com
Thu Sep 16 12:40:14 PDT 2004

> -----Original Message-----
> From: Robert Huitl
> Sent: Thursday, September 16, 2004 11:47 AM
> To: theora-dev at xiph.org
> Subject: Re: [Theora-dev] Problems with Theora DirectShow filters
> > >1. The webcam provides the color formats RGB24, I420 and IYUV. The
> > >Theora
> > >encode filter only accepts YV12, so I can't just connect the webcam
> > > capture pin with theora's yv12-in.
> >
> > Yes... this is a problem at the moment... probably in the next release
> i'll
> > include a conversion from RGB types to YUV types.
> That would be really fine :-)

In the meantime, I've been using the Intel Performance Primitives (IPP)
library for color conversion, and it's working great.  It converts between
I420, YUY2, and RGB24, and a zillion other colorspaces.  Plus it's optimized
for every Intel processor under the sun, has a free trial, is free for
non-commercial Linux apps, and is very reasonably priced otherwise ($200).



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