[mythtv-users] Re: Question about nuvexport & transcoding in general

[Edward Wildgoose]

> From: John Morris <jmorris at beau.org>
> >AVI has no way to encode an aspect ratio and
> >when DIVX is carried inside
> >AVI instead of NUV it also lacks a way to
> >specify non-square pixels.  If
> >you want good portable divx files you have to
> >stick to encoding at
> >resolutions that produce square pixels.  That
> >means for normal 4:3 NTSC
> >video you want 640x480 or 320x240.  
> 
> The first part is not true.  You can specify the
> pixel aspect in an AVI.  However, DivX v5.05 on
> Windows Media Player ignores it and assumes
> square pixels.  I just nuvexport'ed an AVI
> with 4:3 pixels with the aspect ratio encoded.
> MPlayer played it correctly.  Windows Media Player
> squished it.

Can transcode be made to write such a header when transcoding to divx or xvid?  I'm playing with the DVD transcoder and trying to do a high quality extract from a 720x576 which is in 16:9 aspect.  I would like to encode *without resizing* to a 720x576 mpeg4 file and have it play back correctly in mplayer.

Any pointers as to how to go about this?  It's not too obvious from the transcode docs?

Thanks