[FFmpeg-devel] Artifacts in VP8

[Michael Niedermayer]

On Mon, Jul 30, 2012 at 11:07:58AM +0200, Andy Bell wrote:
> On 28 July 2012 12:20, Michael Niedermayer <michaelni at gmx.at> wrote:
> 
> > On Sat, Jul 28, 2012 at 11:41:28AM +0200, Andy Bell wrote:
> > > OK, so I can disable threading when I configure?
> >
> > -threads 0 should disable threads
> >
> > also try --disable-asm during configure to check if the bug might be
> > in the asm code
> >
> >
> Disabling ARM fixes the issue, therefore there must be a bug in the ASM
> code as you suggested.  

the question still is which of the asm functions.
could you try to disable them individually (like in bisect that is
disable 50% of them then either 25 or 75% until after a few steps the
faulty one is found)
you can disable them easily by commenting code in 
libavcodec/arm/vp8*c
(i assume here its one of them this assumtation is not 100% guranteed
 to be correct, could also be something elsewhere)


> How can I report the bug?

https://ffmpeg.org/trac/ffmpeg


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

If a bugfix only changes things apparently unrelated to the bug with no
further explanation, that is a good sign that the bugfix is wrong.
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