AVIF: replaces the Exif item payload inside an existing meta box, or
appends a fresh minimal meta box (hdlr/pitm/iinf/Exif) after ftyp when
none exists. iloc tables of pre-existing files are left untouched —
readers in this project locate the Exif box structurally.
AVIF: replaces the Exif item payload inside an existing meta box, or appends a fresh minimal meta box (hdlr/pitm/iinf/Exif) after ftyp when none exists. iloc tables of pre-existing files are left untouched — readers in this project locate the Exif box structurally.