[digikam] [Bug 509976] PNG and HEIF not rotated correctly

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=509976

--- Comment #11 from caulier.gilles at gmail.com ---
yes PNG is lossless. In fact it use an opensource LZW compression (zip like).
Result files are huge in all case. It support 16 bits color depth.

HEIF can be lossless or not. Compression uses wavelets (eg. mp4). It support 12
bits color depth.

HEIF is typically the replacement of JPEG in phone, even if it's patented and
require more computation to compress/uncompress. HEIF is mature at less to be
used in production.

More details :
https://docs.digikam.org/en/supported_materials/image_formats.html

Gilles Caulier

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