QuickImageComment displays EXIF, IPTC, and XMP properties of digital images (e.g., JPEG and TIFF as well as some RAW formats) and allows to edit them. These attributes are read from the EXIF, IPTC, and XMP properties of the image and are stored there. Especially editing of user comment and artist (author) is supported by using the last entered or predefined values. Metadata (XMP) in video files are displayed.
For reading and changing the EXIF, IPTC, and XMP properties the library exiv2 is used. On www.exiv2.org a description of this library can be found as well as extensive information and links to Exif, IPTC and XMP. The formats supported by exiv2 are documented here:
https://github.com/Exiv2/exiv2/blob/main/exiv2.md#file_types
To display RAW images, a codec from the camera manufacturer may have to be installed.