[Ffmpeg-devel] [BUG] regression tests failure in r7867

[Michael Niedermayer]

Hi

On Fri, Feb 09, 2007 at 11:20:27PM +0100, Guillaume POIRIER wrote:
> Hi,
> 
> On 2/7/07, Baptiste Coudurier <baptiste.coudurier at smartjog.com> wrote:
> >Hi
> >
> >M?ns Rullg?rd wrote:
> >> Benoit Fouet said:
> >> All the tests (except ffserver) passed last night on my x86-64.  That 
> >was before
> >> the pixfmt checkin though, which is why I suggested it might be the 
> >culprit.
> >>
> >
> >No problem here, I just fixed some libav problems.
> 
> Just tonight, on PPC, with r7903, the regression tests are as follow:
> 
> ../ffmpeg_g -y -flags +bitexact -dct fastint -idct simple -y -i
> ./data/a-vorbis.asf -f wav ./data/out.wav
> FFmpeg version SVN-r7903, Copyright (c) 2000-2007 Fabrice Bellard, et al.
>  configuration: --enable-gpl --cpu=g5
>  libavutil version: 49.3.0
>  libavcodec version: 51.32.0
>  libavformat version: 51.8.0
>  built on Feb  9 2007 23:10:26, gcc: 4.0.1 (Apple Computer, Inc. build 5363)
> size=    1032kB time=6.0 bitrate=1411.3kbits/s
> --- ./data/ffmpeg.regression    2007-02-09 23:15:12.000000000 +0100
> +++ /Users/guillaumepoirier/Prgm/ffmpeg/tests/ffmpeg.regression.ref
> 2007-02-09 23:08:20.000000000 +0100
> @@ -190,15 +190,15 @@
> stddev: 33.31 PSNR:65.87 bytes:1040384
> 768305cec342e01b7a9d38e971ef0174 *./data/a-wmav1.asf
>    99596 ./data/a-wmav1.asf
> -da5422f83dc05390942f32a1b944c1e5 *./data/out.wav
> +2ab193df22bb473e61015e56ac11faf3 *./data/out.wav
> stddev:12251.50 PSNR:14.56 bytes:1056768
> stddev:2106.00 PSNR:29.85 bytes:1048576
> c706c7cf9db10df7a7353a40feddcfdd *./data/a-wmav2.asf
>    99602 ./data/a-wmav2.asf
> -f42e82b11484f3cebdec207fe5c0b61f *./data/out.wav
> +8d05d345bc14153f3d0da95fdf34e084 *./data/out.wav

well, the wma codec uses floats so its very possible to be a simple rounding
difference, if you could upload one of the out.wav (that is one generated 
by decoding a-wmav1/2.asf) i could take a look ...


> stddev:12255.92 PSNR:14.55 bytes:1056768
> stddev:2099.31 PSNR:29.88 bytes:1048576
> -46de10949d472b2ff2622ca220ec5318 *./data/a-vorbis.asf
> +ef725cb9c13b9437a41428eabadeba52 *./data/a-vorbis.asf
>    35686 ./data/a-vorbis.asf
> -3ea5225c7ec10fefea600c150f326bdb *./data/out.wav
> -stddev:3984.67 PSNR:24.31 bytes:1056768
> +e46368ef818f2ec3abcc3f8390d14df5 *./data/out.wav
> +stddev:3882.46 PSNR:24.54 bytes:1056768

this is more then just a rounding difference, first step here is to check
how vorbis encoded on x86 looks when decoded on ppc and the other way
around so we kno if its the encoder or decoder after that tracking that
down may or may not be easy ...

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The misfortune of the wise is better than the prosperity of the fool.
-- Epicurus
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