[Ffmpeg-devel] mpc7 bad quality?

[Guillaume POIRIER]

Hi,

On 3/4/07, Kostya <kostya.shishkov at gmail.com> wrote:
> On Sun, Mar 04, 2007 at 11:04:15AM +0100, Guillaume POIRIER wrote:

> > >On my PPC:
> > >kantate1.wav created by sample decoder from libmpcdec-1.2.1
> > >kantate2.wav was created by FFmpeg
> > >
> > >./tiny_psnr kantate2.wav kantate1.wav 2 1924 44
> > >stddev:  0.70 PSNR:99.34 bytes:50485248
> > >
> > >Can somebody verify this on x86?
> >
> > sure, juste gimme both commandlines and I'll do it.
> >
> > Guillaume
>
> first one: mppdec kantate.mpc kantate1.wav
> second   : ffmpeg -i kantate.mpc kantate2.wav
>
> tiny_psnr was compiled from ffmpeg/tests

Thanks for your help.

I fetched the x86 static binary of mppdec from here:
http://www.musepack.net/index.php?pg=lin

and compiled ffmpeg myself:

./tiny_psnr /tmp/kantate2.wav /tmp/kantate1.wav 2 1924 44
stddev:  0.50 PSNR:102.32 bytes:50485248

My machine is x86-64.

So the stddev is lower, and PSNR higher... seems normal, but it's
different from what Baptise and you are getting.

Guillaume