[mythtv] [PATCH] Add new MPEG4 encoding options

[Geoffrey Hausheer]

On Fri, 28 Mar 2003 17:34:28 -0800, "Bruce Markey bjm-at-lvcm.com
|mythtv/1.0-Allow|" <pgy0hbjzmz0t at sneakemail.com> said:
> Geoffrey Hausheer wrote:
> > Here is a patch to include the 'VHQ' and '4MV' encoding options for MPEG4
> > encoding.  Nothe that these take a LOT of cpu processing, and on my
> > 1.6GHz machine, I can only record at 560x416 with these options enabled
> > (and that is about 85% usage) as opposed to without them 640x480 uses
> > only 60%.
> 
> Who does it look at 480x480? This is about the same number
> of pixels as 560x416 but it samples all of the scan lines.
> 
> --  bjm

It looked fine on my system, though I prefer a 4:3 aspect ratio (or
nearly).  Actually this is why I chose this resolution...it requires the
same bandwidth as 480x480.  My goal is actuallly to sample the card at
720x480 and down-convert to whatever resolution I need, since this is
what I do with mencoder, and am very happy with  the results (of course
it  also requires more processing power too)

On a slightly different topic, what I'd really like to do is encode with
rtjpeg or perhaps a lossless codec (doesn't NuppelVideo have one of 
these?) and do recompression with mpeg4 and more advanced options
(perhaps multi-pass) in the background.  I'm just beginning to look at
this, and it looks painful, but I think it would be a neat feature.  One
thing at a time though.

.Geoff