The saveContent command writes out both the old metadata format and the new formats (XMP, IPTC, and EXIF) formats for PSD and TIFF files.
Issue
We use TIFF fils with IPTC header information created with Photoshop 6. Can Adobe Server convert these to the Photoshop 7 format (XMP)?
History
Photoshop has supported IPTC metadata since at least version 4. The way the data is stored into the files was changed with Photoshop 7-- to use XMP.
What is IPTC and what is it used for?
(from Photoshop 7 help)
File information--also called metadata--is increasingly important in all types of publishing. Adobe Photoshop supports the information standard developed by the Newspaper Association of America (NAA) and the International Press Telecommunications Council (IPTC) to identify transmitted text and images. This standard includes entries for captions, keywords, categories, credits, and origins.
In Windows, you can add file information to files saved in Photoshop, TIFF, JPEG, EPS, and PDF formats. In Mac OS, you can add file information to files in any format. The information you add is embedded in the file using XMP (eXtensible Metadata Platform). XMP provides Adobe applications and workflow partners with a common XML framework that standardizes the creation, processing, and interchange of document metadata across publishing workflows.
Solution
The saveContent command writes out XMP, IPTC, and EXIF metadata formats for PSD and TIFF files. To answer the original question, AGS/ADS writes both the old and new formats for TIFFs. This issue is discussed in the Developer Guide Table 4.1.
The saveOptimized command writes out only the metadata formats you specify that are supported for the destination file format (per table 4.1).
JPEGs are special
You can't just look at the saveOptimized attributes--the optimization settings for JPEG also affect whether IPTC metadata is saved with the file.
saveOptimized
The metadata attribute is optional. It specifies which metadata formats to save with the optimized file. You can specify a combination of formats, separated by spaces. Allowed formats are:
- exif (JPEG only)
- xmp
- iptc (JPEG only)
If the attribute is not supplied, no metadata is saved with the file. No metadata is saved with a WBMP file.
optimization settings
The optimization settings for the JPEG file format also include a metadata attribute.
If this attribute is true, IPTC metadata is embedded in the file regardless of the value of the saveOptimized metadata attribute. In this case, you can use the saveOptimized metadata attribute to specify XMP or EXIF in addition to the IPTC format.