Subject: Re: bug#51381: HEIF image format support

From: Stefan Kangas <[email-masked]>
Date: Thu, 28 Oct 2021 14:00:32 -0700

Lars Ingebrigtsen <[email-masked]> writes:

> Yup.  :-)

I finally got around to testing this, with an image from

    https://github.com/nokiatech/heif_conformance

on current master:

0. curl --output /tmp/C001.heic
https://raw.githubusercontent.com/nokiatech/heif_conformance/master/conformance_files/C001.heic
1. emacs -Q --eval '(setq image-use-external-converter t)' /tmp/C001.heic

But I get the error message "Unknown image type", and nothing else.

I also tried image1.heic from here:

    https://github.com/tigranbs/test-heic-images

with the same result.

Am I doing something wrong?  I have all three of GraphicsMagick, ffmpeg
and ImageMagick installed AFAICT.