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exiv2 - Command line tool to access EXIF data in image files
- Description:
Exiv2 is a C++ library and command line utility to access image metadata.
Exiv2 is free software.
The Exiv2 library provides
* full read and write access to the Exif and IPTC metadata of
an image through Exiv2 keys and standard C++ iterators
(Example1, Example2, Example3, Example4)
* a smart IPTC implementation that does not affect data that
programs like Photoshop store in the same image segment
* Exif MakerNote support:
o MakerNote tags can be accessed just like any other Exif metadata
o a sophisticated write algorithm avoids corrupting the MakerNote:
1) the MakerNote is not re-located if possible at all, and
2) MakerNote Ifd offsets are re-calculated if the MakerNote
needs to be moved (for known Ifd MakerNotes)
* extract and delete methods for Exif thumbnails (both, JPEG and TIFF
thumbnails)
* set methods for Exif thumbnails (JPEG only, TIFF thumbnails can be
set from individual tags)
* complete API documentation (by Doxygen)
Exiv2 is a command line utility to
* print the Exif metadata of JPEG, TIFF and several RAW image
formats as summary info, interpreted values, or the plain data
for each tag (a sample is here)
* print the IPTC metadata of JPEG images
* print, set and delete the JPEG comment of JPEG images
* set, add and delete Exif and IPTC metadata of JPEG images
* adjust the Exif timestamp (that's how it all started...)
* rename Exif image files according to the Exif timestamp
* extract, insert and delete Exif metadata, IPTC metadata and JPEG
comments
* extract, insert and delete the thumbnail image embedded in the
Exif metadata
* fix the Exif ISO setting of picture taken with Nikon cameras
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