[FFmpeg-devel] [PATCH] make fast option with h264 actually do something..

[Rich Felker]

On Wed, Feb 20, 2008 at 10:33:15AM +0100, Nico Sabbi wrote:
> On Wednesday 20 February 2008 10:17:14 M?ns Rullg?rd wrote:
> 
> >
> > > Even nicer would be support for lowres mode -- this would be
> > > useful not just to folks like me but to people with fast
> > > computers who want to play HD content.
> >
> > If I'm playing HD content, I want to see the full resolution.  If I
> > didn't, I wouldn't bother getting the HD version in the first
> > place.
> 
> 
> but the SD resolution could be unavailable or inexistent.
> The output of lowres applied to HD content is still very good looking

Indeed. This is becoming an increasing problem. And with HD content,
very little is lost from lowres=1 or even 2 because most of the
upper-frequency dct coefficients are near-zero. The artifact issues
should be much less relevant than with SD content.

Rich