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Python EXIF parsing
Python
branch: master

Merge pull request #11 from DenisCarriere/patch-1

Update README format to Markdown
latest commit 2888a9913e
@bennoleslie authored

README.md

Python EXIF parsing

pexif is a Python library for parsing and more importantly editing EXIF data in JPEG files.

This grew out of a need to add GPS tagged data to my images, Unfortunately the other libraries out there couldn't do updates and didn't seem easily architectured to be able to add such a thing. Ain't reusable software grand!

Apps

  • dump_exif.py: Output the EXIF file from a given file.
  • setgps.py: Set the GPS metadata on a file.
  • getgps.py: Get the GPS metadata from a file.
  • noop.py: This is a no-op on a jpeg file. Useful for testing images are preserved across operations using pexif. Note that the binary data will not be exact as pexif will compress unused space in the file, however running it on a file twice should end up with the same data.

Examples

  • hello.py: Add a simple description to a photo.

Status:

WARNING: This could destroy your images!! Backup your images before using.

Currently it parses files from my Canon without a problem, and is able to add a GPS tag without corrupting the rest of the image.

References

This work couldn't be done with the reference for the spec. In particular I worked to:

For the format of the Canon stuff I used:

For the format of FujiFILM make note:

Acknowledgments:

Nick Carter provided conker.jpg which is used for testing FUJIFILM exif data.

Nick Burch provided noexif.jpg which is used for testing inputs that don't have an existing EXIF segment. Nick burch also found an error in GeoTags on the S60.

Christopher Jones who inspired updating my examples to show how copying EXIF data from one jpeg to another.

Roland Klabunde who also found a bug in the GeoTag functionality.

Marcell Lengyel for adding better support for Canon g3 and FujiFilm z5fd.

Andrew Baumann for finding a bug in dealing with extended IFD sections, and supplying the timezone adjustment script.

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