[FFmpeg-devel] pixel format convertion yuv422p- >yuv420p->yuv411p->yuv422p degrade picture

[Ivo]

On Wednesday 16 July 2008 16:01, Maksym Veremeyenko wrote:
> Ivo ???????(??):
> > On Wednesday 16 July 2008 13:18, Maksym Veremeyenko wrote:
> >> What tests more should i make?
> >
> > As Michael Niedermayer already asked, it would help to know whether you
> > used the old converter or swscale (compile with ./configure
> > --enable-swscale).
>
> my all tests was done with binaries compiled with --enable-swscale :
>
> FFmpeg version SVN-r12665, Copyright (c) 2000-2008 Fabrice Bellard, et
> al. configuration: --enable-gpl --enable-postproc --enable-swscale
> --enable-avfilter-lavf --enable-pthreads --enable-liba52
> --enable-avisynth --enable-libfaac --enable-libfaad --enable-libgsm
> --enable-memalign-hack --enable-libmp3lame --enable-libnut
> --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
> --cpu=i686 --extra-ldflags=-static
>    libavutil version: 49.6.0
>    libavcodec version: 51.54.0
>    libavformat version: 52.13.0
>    libavdevice version: 52.0.0
>    built on Apr  2 2008 22:35:11, gcc: 4.2.3
>
> I will try in a few hour test against version compiled without
> --enable-swscale

Ok, looks like it's only swscale that shows this problem. What happens if 
you enable accurate_rnd or disable mmx, mmx2, 3dnow, et cetera 
(see -sws_flags command line option, it might help to localize the exact 
point of failure).

--Ivo