[MPlayer-dev-eng] Adding threaded functionality to mplayer NODAEMON

[Roberto Ragusa]

On Sun, 12 Sep 2004 13:33:58 -0400
D Richard Felker III <dalias at aerifal.cx> wrote:

> > Basically, when mpeg4 does mot comp and block prediction, it is using
> > a linear process (prediction is a simple linear transform).
> 
> it's not what i would call a linear process. when i say a filter is
> linear, i mean it's a linear transformation from R^(w*h) (or in the 3d
> wavelet case, R^(w*h*l) where l is the time window length) to some
> other linear space. motion compensation is _highly_ nonlinear.

I said prediction is linear, not mot comp.
Prediction is basically x(n+1)=a(x(n))+delta(n+1), so it's linear.
It is the mot comp that is non linear.

What mpeg2 or mpeg4 do is actually prediction after mot comp
(you move your block around and then take differences).

We just use different terminology.

-- 
   Roberto Ragusa    mail at robertoragusa.it