Package: graphicsmagick
Hello. The viewnior and gpicview packages support heic, so should gm.
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On 2023-10-08 08:08, Bob Friesenhahn wrote:
On Sat, 7 Oct 2023, Dan Jacobson wrote:
I was using https://packages.debian.org/sid/graphicsmagick on a
chromebook
$ gm convert -list formats |fgrep -i heif
AVIF P r-- HEIF Image Format (heif v16.2.0)
HEIC P r-- HEIF Image Format (heif v16.2.0)
HEIF P r-- HEIF Image Format (heif v16.2.0)
$ gm convert -debug coder,exception C001.heic info:-
18:35:16 0:0.002526 0.000u 3249 constitute.c/ReadImage/1676/Coder:
Invoking "HEIC" decoder (HEIF Image Format) subimage=0 subrange=0
18:35:16 0:0.010894 0.010u 3249 heif.c/ReadHEIFImage/571/Coder:
Geometry: 1280x720
18:35:16 0:0.011036 0.010u 3249 heif.c/ReadHEIFImage/573/Coder:
Matte: False
18:35:16 0:0.011135 0.010u 3249 heif.c/ReadHEIFImage/650/Coder:
heif_decode_image() reports error "Unsupported feature: Unsupported
codec"
From the above, I deduce that libheif from Debian Sid does not support
HEIC, or a sub-feature of HEIC. It is possible that Debian Sid
binaries do not include support for HEIC at all.
The nature of free software is that free software developers (and free
distributions) may not be willing to pay license fees, or legal fees,
or financial penalties, associated with patented algorithms.
At least Ubuntu 22.04 LTS does include HEIC support.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us,
http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
Public Key,
http://www.simplesystems.org/users/bfriesen/public-key.txt
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[Any plans to add HEIC
format?](https://sourceforge.net/p/graphicsmagick/discussion/250738/thread/3082583888/?limit=25#72bc/4107/9a40/a1c7)
