RE: [png-mng-misc] looking for a PNG sample with XMP data

[John B. <jb...@ac...>]

From: Greg Roelofs
>that is, tXMP would imply a public chunk

Using iTXt implies the data is safe-to-copy, which I don't think it is.

We could put up a proposal for iTXT - identical to iTXt but unsafe-to-copy.
We could even do tXML - indicating that the data should be valid XML!
Alternatively Adobe could propose tXMP.

Any of these solutions would, I think, not be controversial.  The only
controversial thing is pre-empting the approval process...

It would be nice to demonstrate that it is possible to get an extension
chunk approved.

John Bowler <jb...@ac...>