[MEncoder-users] RGB => YV12 conversion

[Rich Felker]

On Mon, Sep 26, 2005 at 04:39:59PM -0700, RC wrote:
> On Tue, 27 Sep 2005 00:06:43 +0400
> Vladimir Mosgalin <mosgalin at VM10124.spb.edu> wrote:
> 
> > I already said that I'm not interested in such bitrates.. No codec
> > will produce good-looking animation at any resolution with bitrate of
> > 500 kbit/s. Maybe it won't swarm with artifacts, but then low
> > resolution and aliasing will destroy the quality. And no small details
> > at all..
> 
> No, at 500k lavc will look practically perfect on animation.  I don't

What kind of shitty animation are you talking about? Anyone encoding
anime knows that 1000-1100 kbit/sec is the minimum acceptable rate,
and 1200-1500 are not uncommon.

> know why you're mentioning aliasing, that has nothing to do with
> bitrate/artifacts.

Apparently talking about downscaling with a bad resampler...

> > Depending on the kind of animation, sometimes 1300-1500 is enough for
> > 704x480. Sometimes you have to go as high as 2200-2500 for 704x360, or
> > you'll see a lot of artifacts in fast scenes.
> 
> I don't think you could even force lavc to use a bitrate of 2200 for
> 720x480 animation.  It would be absolutely perfect long before you'd get
> that high.  

No way. Constant q=2 should give around 1700-2500 depending on the
content, iirc.

Rich