[Ffmpeg-devel] mpc7 bad quality?

Ronald S. Bultje rbultje
Mon Mar 5 01:56:16 CET 2007


On Sun, 2007-03-04, Kostya wrote:
> On Sun, Mar 04, 2007 at 09:48:37AM -0500, Ronald S. Bultje wrote:
> > $ ./ffmpeg -i ~/Desktop/kantate.mpc ~/Desktop/kantate-ff.wav
> > $ gst-launch-0.10 filesrc location=~/Desktop/kantate.mpc ! musepackdec !
> > audioconvert ! wavenc ! filesink location=~/Desktop/kantate-gst.wav
> > $ tests/tiny_psnr ~/Desktop/kantate-ff.wav ~/Desktop/kantate-gst.wav 2
> > 1924 44
> > stddev:24823.12 PSNR:31.70 bytes:50485248
> > 
> > That doesn't look good... .wav samples don't look alike at all in a text
> > editor either, really. I've uploaded first MB for both files above at
> > http://freedesktop.org/~rbultje/ in case it's helpful.
>  
> Also if you look in FFplay your sample has higher volume and clipping.
> Have you played with CONFIG_MPEGAUDIO_HP? 

Yes, indeed, and apparently that's not a good thing. I can confirm that
the default config works fine. Thanks for the hint & sorry for the noise
(I guess I should've tested this before emailing)!

Ronald





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