[FFmpeg-devel] [PATCH] QCELP decoder
Fri Oct 3 01:42:22 CEST 2008
On Oct 2, 2008, at 2:25 PM, Vitor Sessak wrote:
> For codecs that were supposed to be converted to signed 16-bit at some
> point should be indeed between -1. and 1.. A good way to test if did
> do something wrong is to decode a sample to wav and see if your change
> changes the result. It should either don't change or change a
> amount (see tests/tiny_psnr for evaluating how much it has changed).
From the samples,
stddev: 0.00 PSNR:999.99 bytes: 250284/ 250284
For blue_earth.mov,tiny_psnr gives:
stddev: 119.57 PSNR: 6.57 bytes: 19681324/ 19681324
For h263.mov, tiny_psnr gives:
stddev: 73.51 PSNR: 10.79 bytes: 13511404/ 13511404
is it still ok, or is something wrong?
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