Re: mpeg 2 editing


"Alpha" <none@xxxxxxxx> wrote in message
news:11je3t25eh65a02@xxxxxxxxxxxxxxxxxxxxx
>
> "PTravel" <ptravel@xxxxxxxxxxxxxxxxxx> wrote in message
> news:UseZe.1447$9E2.670@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >
> > "Alpha" <none@xxxxxxxx> wrote in message
> > news:11j9unupo72k1d8@xxxxxxxxxxxxxxxxxxxxx
> >>
> >
> >> > Mpeg compresses temporally as well as spatially, i.e. it uses the
data
> >> > before and after a given frame to determine what's in a frame. This
> > makes
> >> > it difficult, but not impossible, to do frame-accurate cuts editing.
> >> > However, any other editing tasks, e.g. adding transitions, titles,
> >> > effects,
> >> > corrections, etc., require re-transcoding of, at least, the effected
> >> > frames,
> >> > resulting in image degradation.
> >>
> >> Why degradation? If the algorithm is excellent, the image can actually
> >> be
> >> improved!
> >
> > In that case, you also believe in perpetual machines and alchemy.
> >
> > Mpeg is a _lossy_ compression format. Each time you re-transcode, you
> > LOSE
> > data.
>
>
> So what? It is data you cannot perceive (see the studies before you mouth
> off so ignorantly). Have you studied the psychophysics, applied this to
> digital encoding, etc. I have.
>
> Lossy....lossy. Who cares? It is lossy to play music through an
amplifier,
> through headphones, through speakers, through etc. any transducer at all.
> Perhaps you should bind your ears to the instruments you want to listen to
> so you won't experience as much loss. Sheesh, the ignorance.

Ignorance, indeed. Look up the meaning of "lossy."

>
>
>
>
>


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