Add support for new Content Credentials C2PA standard

[n8fr8]

C2PA Support

Similar to EXIF, the new C2PA standard is going to become more and more common. Leica and Sony now support in their camera hardware, and open-source mobile camera apps like ProofMode.org do as well.

There are nice open-source libraries and tools for checking for and extracting C2PA info from images and videos here:
https://github.com/contentauth/c2patool

I may be open to implementing this, but just getting the conversation started here.

Love thumbsup, such a useful tool!

[n8fr8]

Oh, see https://contentauthenticity.org/ and c2pa.org as well.

[rprieto]

Hi, thanks for sharing this!

Thumbsup uses exiftool to read all metadata - which includes EXIF but also XMP, IPTC, QuickTime, etc.
I see the newest version of Exiftool released this month mentions C2PA:

Added ability to read/delete C2PA CAI JUMBF metadata from TIFF-based images (eg. DNG), QuickTime-based files (eg. MP4) and WebP images, and read JUMBF from other RIFF-based files (eg. WAV, AVI), GIF images and ID3v2 metadata

Do you have any sample content you can submit to see what type of data we can retrieve?

[n8fr8]

That is great news about exiftool!

There is a repository of public test files here: https://github.com/c2pa-org/public-testfiles

There are some nice tools that can be integrated within the c2pa-js framework for display metadata as well:
https://github.com/contentauth/c2pa-js