On Sat, 2023-02-25 at 10:27 -0500, Neal Gompa wrote:
> On Sat, Feb 25, 2023 at 10:20 AM Sandro <lists(a)penguinpee.nl> wrote:
> >
> > Greetings everyone,
> >
> > TL;DR
> > Will there be AVIF (AV1) support for applications using libheif in
> > Fedora?
> >
> > A while ago I stumbled upon AVIF files not being supported by
> > applications (gThumb, ImageMagick, GIMP) in Fedora [1].
> >
> > It appears that the applications mentioned have switched to libheif
> > for
> > AVIF support in favor of libavif. Since libheif also
> > provides/requires
> > patent encumbered libraries/codecs (libde265) related to HEIF it is
> > provided by RPMFusion.
> >
> > AVIF, however, is not encumbered by patents as I understand it [2].
> > So
> > it seems we need a compatibility libheif-av1 or the like to allow
> > applications provided by fedora repos to enable AVIF (AV1) support
> > using
> > libheif [3].
> >
> > I found two threads ([4],[5]) in the archives regarding HEIF and
> > AVIF.
> > But none of them are conclusive with regards to enabling AVIF
> > support.
> >
> > Are there any plans to enable AVIF support in applications that use
> > libheif as their provider? If so, where can I find information
> > regarding
> > the status?
> >
> > I apologize in advance if any of the above is not entirely correct
> > (or
> > entirely incorrect). Aim of my message is to better understand why
> > support for AVIF is lacking in some applications and if that can be
> > fixed.
> >
> > [1]
https://bugzilla.redhat.com/show_bug.cgi?id=2165606
> > [2]
https://bugzilla.redhat.com/show_bug.cgi?id=2164329#c3
> > [3] This part is not entirely clear to me. Please correct me.
> > [4]
> >
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.o...
> > [5]
> >
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.o...
> >
>
> It looks like libheif now supports a plugin architecture, so we could
> move libheif to Fedora, while having the HEVC/H.265 backend plugin in
> RPM Fusion.
>
> Also, according to the CMake, the HEVC/H.265 plugins are not built by
> default anymore:
>
https://github.com/strukturag/libheif/blob/cdcc5b210879e0a0348032a594f8be...
>
> So feel free to package it and bring it into Fedora. :)
So we can build libheif without H.265 on Fedora but how you propose
make H.265 available with one third repo ? just build the plugin on
third repo as a freeworld package ?
It may be possible to build the plugin independently and link to
libheif, but at the minimum, that's what I expect.
--
真実はいつも一つ!/ Always, there's only one truth!