Re: Adding a lossless mode to MPC SV8

> - consider to check if its possible to allow peeling for MPC SV8, so=3D=
20
> that users can store their MPC files with rather high=3D20
> bitrates on DVD or=3D20
> CD media, but can peel the files down in bitrate so they could be=3D20
> transferred onto portable players ( of course, this is NOT a lossless=3D=
20
> process anymore )

Current spec only allows bandwidth scalability (normal for subband =3D
coders),
but not scalable quality (AFAIK).

> - add a loss less mode to SV8, and the speciality here is that mixing=3D=
20
> lossy and lossless modes in one and the same file should be possible,=3D=
20
> just like in the upcoming Wavpack4 from David Bryant ( who i=3D20
> am copying=3D20
> on this email, i dont wnat to 'steal' his idea without at=3D20
> least telling=3D20
> him :-)  )

I'm not sure if you can make a subband coder lossless. Subband =3D
iflterbanks
can be lossless, but you always end up with values to round in the =3D
coder. It
could be possible if you use some integer lifting scheme in the =3D
filterbank,
but I'm not sure. Of course using a completely different coding method =3D
for
the lossless part, or error part, is also possible.

Menno


http://mpc.corecodec.org