Re: [FFmpeg-devel] [FFmpeg-cvslog] ffv1dec: use dedicated pix_fmt field and call ff_get_format

[Michael Niedermayer <michael@niedermayer.cc>]

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Hi Lynne

On Sat, Jan 25, 2025 at 11:06:43AM +0900, Lynne wrote:
> 
> 
> On 25/01/2025 06:54, Michael Niedermayer wrote:
> > On Tue, Jan 21, 2025 at 03:10:47PM +0000, Lynne wrote:
> > > ffmpeg | branch: master | Lynne <dev@lynne.ee> | Sun Jan  5 13:42:47 2025 +0900| [7187eadf8c0f0c640f1d23811c55fad0cba60aa5] | committer: Lynne
> > > 
> > > ffv1dec: use dedicated pix_fmt field and call ff_get_format
> > > 
> > > Adding support for hwaccels means that avctx->pix_fmt will indicate
> > > hardware formats.
> > > 
> > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7187eadf8c0f0c640f1d23811c55fad0cba60aa5
> > > ---
> > > 
> > >   libavcodec/ffv1.h    |   1 +
> > >   libavcodec/ffv1dec.c | 140 ++++++++++++++++++++++++++++-----------------------
> > >   2 files changed, 78 insertions(+), 63 deletions(-)
> > 
> > breaks:
> > ./ffmpeg -y  -i mm-short.mpg -an -vcodec ffv1 -slices 4 -t 1 -coder 1 -level 3 -slicecrc 0 -context 0 -pix_fmt ya8 -bitexact out.nut
> > ./ffplay out.nut
> > 
> > (and others)
> > slices seem to decode in the wrong locations and jump randomly around
> > 
> > thx
> 
> Thanks.
> Is it this specific patch, or is it the patchset as a whole that did it?

bisect pointed to this patch
and reverting it and the following patches fixes it

thx

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. User
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