Re: [FFmpeg-devel] FATE Errors

[Soft Works <softworkz@hotmail.com>]

> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> Paul B Mahol
> Sent: Saturday, May 28, 2022 9:26 AM
> To: FFmpeg development discussions and patches <ffmpeg-
> devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] FATE Errors
> 
> On Fri, May 27, 2022 at 11:11 PM Soft Works <softworkz@hotmail.com>
> wrote:
> 
> >
> >
> > > -----Original Message-----
> > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> > > Andreas Rheinhardt
> > > Sent: Saturday, April 30, 2022 10:02 PM
> > > To: ffmpeg-devel@ffmpeg.org
> > > Subject: Re: [FFmpeg-devel] FATE Errors
> > >
> > > James Almer:
> > > >
> > > >
> > > > On 4/30/2022 4:06 PM, Andreas Rheinhardt wrote:
> > > >> Soft Works:
> > > >>> Hi,
> > > >>>
> > > >>> is it a known issue that the current head of the master
> branch
> > > has
> > > >>> FATE errors?
> > > >>>
> > > >>> I get the same locally as well as on the automated GitHub
> build.
> > > >>> One is this:
> > > >>>
> > > >>> --- ./tests/ref/vsynth/vsynth2-mpeg2-422 2022-04-30
> > > >>> 14:23:44.330424058 +0000
> > > >>> +++ tests/data/fate/vsynth2-mpeg2-422 2022-04-30
> > > 14:38:41.071678201
> > > >>> +0000
> > > >>> @@ -1,4 +1,4 @@
> > > >>> -b2fa9b73c3547191ecc01b8163abd4e5
> > > >>> *tests/data/fate/vsynth2-mpeg2-422.mpeg2video
> > > >>> -379164 tests/data/fate/vsynth2-mpeg2-422.mpeg2video
> > > >>> -704f6a96f93c2409219bd48b74169041
> > > >>> *tests/data/fate/vsynth2-mpeg2-422.out.rawvideo
> > > >>> -stddev: 4.17 PSNR: 35.73 MAXDIFF: 70 bytes: 7603200/ 7603200
> > > >>> +8f6d565723ccf879ab2b5aa910b7ce21
> > > >>> *tests/data/fate/vsynth2-mpeg2-422.mpeg2video
> > > >>> +380544 tests/data/fate/vsynth2-mpeg2-422.mpeg2video
> > > >>> +0797fddea4835687dedddebbbe98fa8f
> > > >>> *tests/data/fate/vsynth2-mpeg2-422.out.rawvideo
> > > >>> +stddev: 4.16 PSNR: 35.73 MAXDIFF: 75 bytes: 7603200/ 7603200
> > > >>> Test vsynth2-mpeg2-422 failed. Look at
> > > >>> tests/data/fate/vsynth2-mpeg2-422.err for details.
> > > >>> make: *** [tests/Makefile:277: fate-vsynth2-mpeg2-422] Error
> 1
> > > >>>
> > > >>>
> > > >>> Is anybody seeing the same?
> > > >>>
> > > >>> Thanks,
> > > >>> sw
> > > >>
> > > >> http://fate.ffmpeg.org/ doesn't show recent regressions and
> FATE
> > > is fine
> > > >> for me locally. I recently made changes to FATE (namely the
> test
> > > >> requirements, vcodec.mak (where the vsynth-tests reside) among
> the
> > > files
> > > >> affected), so I am interested in whether the failing tests are
> > > >> concentrated on the files recently changed by me (it would
> > > obviously not
> > > >> haved pushed them if I knew them to cause issues; also
> patchwork
> > > was
> > > >> fine).
> > > >> Are these issues reproducible? Can you bisect them?
> > > >>
> > > >> - Andreas
> > > >
> > > > This may be the alignment issue introduced in lavfi in
> > > >
> > >
> https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=17a59a634c39b00
> > > a680c6ebbaea58db95594d13d
> > > > assuming it was not fixed.
> > > > I think it only affected targets where av_cpu_max_align()
> returned
> > > 64.
> > >
> > > You are completely right: Just making av_cpu_max_align return 64
> > > allows
> > > to reproduce the issue. And it has nothing to do with my recent
> FATE
> > > patches (545e87f49dc9fa5b880e330fc4e1854df68cc0f1 would be the
> only
> > > contender for changes).
> > >
> >
> >
> > I found that the FATE errors can be avoided by using
> >
> > ./configure --disable-avx512
> >
> > Yet, I hope it will be fixed at some time..
> >
> 
> I hope you will post a fix for it soon.

That depends on whether we want alignment values > 32bit..?
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