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List:       graphicsmagick-help
Subject:    [GM-help] Use embedded preview JPEG in ARW raw file
From:       "Felix E. Klee" <felix.klee () inka ! de>
Date:       2023-01-21 15:07:41
Message-ID: 8735847woy.fsf () inka ! de
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GraphicsMagick can interpret and convert ARW files, which is great:

    gm convert file.ARW file.png

However, it is slow.  What is much faster:

    dcraw -c -e file.ARW >file.jpg
    gm convert file.jpg file.png

Can I tell GraphicsMagick to use the embedded JPEG as a source for
conversion from ARW files?  Maybe I can delegate ARW handling to
[dcraw][1]?

I know the preview image is smaller and of low quality, but that's OK.
The conversion just needs to be fast.  I want to use it for quickly
viewing ARW images in Emacs, and that uses GraphicsMagick under the
hood.

[1]: https://www.dechifro.org/dcraw/



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