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Re: [Opendivx] Reusability



The last time I looked at the standard, it used a DCT.

On Wed, 31 Jan 2001, Thomas Hargrove wrote:

> I was under the impression that MPEG4 uses DWT instead of DCT.  (The W
> stands for wavelet).
>
> Am I wrong?
>
> --Tom
>
> ----- Original Message -----
> From: "Nick Feamster" <[email protected]>
> To: "prakash" <[email protected]>
> Cc: <[email protected]>
> Sent: Wednesday, January 31, 2001 8:08 AM
> Subject: Re: [Opendivx] Reusability
>
>
> > The motion estimation done in MPEG-4 is similar to that done in MPEG-2.
> > Both use block matching and motion estimation on 16x16 blocks, with an
> > option to have 4 motion vectors per block.  I am not sure if the DCT
> > coefficients are the same though...
> >
> > Nick
> >
> > On Wed, 31 Jan 2001, prakash wrote:
> >
> > > Hello all,
> > > Is it possible to reuse the motion vectors/dct from other mpeg standards
> > > here? How different are the motion vectors here when compared to mpeg-2?
> > >
> > > with regards
> > > Prakash
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
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> > >
> >
> >
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> >
>


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