Revise ubuntu-restricted-addons for mantic

chromium-codecs-ffmpeg-extra:

Per the package description:
"This is a transitional dummy package. It can safely be removed."

HEIF / libheif:

This is a container format and libheif is a specific implementation of it. ubuntu-restricted-addons will automatically introduce libheif at a later date via the libavformat* package after it has been implemented upstream (https://trac.ffmpeg.org/ticket/6521). I can confirm there is no mention of "heif" anywhere in the ffmpeg source code yet.

The reason we're waiting on ffmpeg for libheif is because that's what all our apps use indirectly:

  $APPLICATION depends on gstreamer1.0
  ubuntu-restricted-addons recommends gstreamer1.0-libav
  gstreamer1.0-libav depends on libavformat59 (ffmpeg)
  libavformat is waiting on https://trac.ffmpeg.org/ticket/6521

or:

  $APPLICATION depends on libavformat (ffmpeg)
  libavformat is waiting on https://trac.ffmpeg.org/ticket/6521

Debdiff for mantic attached.

Sponsored. Thanks!

This bug was fixed in the package ubuntu-restricted-addons - 29

---------------
ubuntu-restricted-addons (29) mantic; urgency=medium

  * Drop old dependencies (LP: #2028753)
    - chromium-codecs-ffmpeg-extra: because it's empty and
      "This is a transitional dummy package. It can safely be removed."
    - gstreamer1.0-fluendo-mp3: because it no longer exists after bionic.

 -- Daniel van Vugt <email address hidden> Thu, 27 Jul 2023 15:39:34 +0800