Re: [MCF-Devel] Re: Pixel format suggestions for MCF

On Sat, Nov 02, 2002 at 06:19:49PM +0100, Steve Lhomme wrote:
> I think in the case of MCF and decoding architecture, the size 
> (width/height) of the picture to decode is written in the container, not 
> in the codec private data, and not in the codec data (in the most 
> general case). So the application that want to play a video has to get 
> the decoding side one way or another. I don't know if it should be 
> "over" the codec API or through the codec API. But what I'm sure is that 
> it has to be codec in the container. So the same goes for AR. (this is 
> already the case)

I'm having a really hard time understanding this (Parse Error), so I'm not sure
exactly what you're saying here..

Note that most codecs do not handle AR themselves, but are only concerned with
reproducing the base video data.  It's up to the larger architecture to handle
AR adjustments outside of the codec (this is one of the reasons that AVI is
problematic, because it has no way to support this, so you can't encode
anything other than 1:1 video data in an AVI file).

I'm not sure what you mean by "it has to be codec in the container", but as far
as I'm concerned the codec shouldn't have anything to do with AR correction or
resizing under normal circumstances.

-alex