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Title: Content Credentials?
Post by: Alan Clifford on October 26, 2021, 04:02:20 PM

So what is it? XMP metatdata?

https://petapixel.com/2021/10/26/photoshops-content-credentials-embeds-attribution-data-into-photos/

Title: Re: Content Credentials?
Post by: Phil Harvey on October 26, 2021, 05:47:10 PM

No. It's basically JUMBF metadata using CBOR-format records embedded in a new JPEG segment. ExifTool already supports reading this, but the specification hasn't yet been finalized.

- Phil

Title: Re: Content Credentials?
Post by: StarGeek on October 26, 2021, 05:57:28 PM

Previous thread (https://exiftool.org/forum/index.php?topic=12300.0)

Title: Re: Content Credentials?
Post by: Phil Harvey on October 26, 2021, 07:28:53 PM

Thanks StarGeek. I forgot about that thread. Most of the communication with interested parties has been via email.

That thread makes no mention of CBOR, but the current version of the specification uses CBOR instead of JSON for most records.

Yes, not XMP. And you can see why. Apparently even JSON was too bulky for them (and it's far less bulky than XMP), so they went to CBOR (Concise Binary Object Representation).

- Phil

Title: Re: Content Credentials?
Post by: Alan Clifford on October 27, 2021, 11:23:27 AM

I'm just curious about this. Is there any reason why it can't just be removed or modified like any other metadata?

Title: Re: Content Credentials?
Post by: Phil Harvey on October 27, 2021, 02:13:58 PM

You can remove it with

exiftool -app11:all= FILE

ExifTool doesn't have the ability to modify it because the format is complex and the demand is low for this feature.

- Phil

ExifTool Forum

General => Metadata => Topic started by: Alan Clifford on October 26, 2021, 04:02:20 PM