[FFmpeg-devel] Support for decoding animated WebP images

Bjorn Roche bjorn at giphy.com
Thu Oct 26 22:33:36 EEST 2017


On Thu, Oct 26, 2017 at 11:21 AM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
wrote:

> 2017-10-26 17:16 GMT+02:00 Bjorn Roche <bjorn at giphy.com>:
> > Hey there,
> >
> > Has anyone been working on this ticket: https://trac.ffmpeg.org/
> ticket/4907
>
> Given that the ticket has seen no activity for two years, this
> isn't very likely.
>
> To make sure, feel free to add yourself as owner.
>
> > "Support decoding animated WebP images"
> >
> > I'd be interested in working on it, especially if it's not an enormous
> > project. Any guidance or hints, however vague, would be helpful. e.g., is
> > this a problem with the codec or the muxer? Is something wrong with the
> > underlying library? Which files should I look at first? Any idea/guess
> > about what the problem might be?
>
> Our webp decoder does not understand the ANIM and ANMF chunks.
>

Thanks, that's very helpful. On quick inspection of the spec it looks
similar to some things in GIF that I'm intimately familiar with. I'll need
to read a bit more, before I commit, but I think I can tackle this.

bjorn


-- 


Bjorn Roche

Sr. Video Pipeline Engineer

bjorn at giphy.com


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