Exif and Iptc metadata manipulation library and tools v0.5

Exiv2 Overview

Exiv2 is a C++ library that provides

• full read and write access to the Exif and Iptc IIM metadata of an image through Exiv2 keys and standard C++ iterators
• Exif MakerNote support:
  • MakerNote tags can be accessed just like any other metadata
  • 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)
  • new camera make/model specific MakerNotes can be added to the library with minimum effort in OO-fashion (by subclassing MakerNote or IfdMakerNote)
• extract and delete methods for Exif thumbnails (both, JPEG and TIFF thumbnails)
• extensive Doxygen API documentation
• generic lower-level classes to access IFD (Image File Directory) data structures

Exiv2 is also a command line program to

• print the Exif metadata of JPEG images (as summary info, interpreted values, or the plain data for each tag)
• print the 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 Exif metadata from image files and insert it again
• extract the thumbnail image embedded in the Exif metadata
• delete the thumbnail or the complete Exif metadata from an image

Getting started

A few pointers to get you started with the Exiv2 library without delay.

Supported Exif and MakerNote tags and Iptc datasets

• Standard Exif tags
• Canon MakerNote tags
• Fujifilm MakerNote tags
• Nikon (format 1) MakerNote tags
• Nikon (format 2) MakerNote tags
• Nikon (format 3) MakerNote tags
• Sigma/Foveon MakerNote tags
• Iptc datasets

MakerNote Formats and Specifications

A summary of MakerNote structures with links to publicly available specifications.

License

Copyright (C) 2004 Andreas Huggel <ahuggel@gmx.net>

Exiv2 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Exiv2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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