iTunes Package Music Specification update.

The iTunes Package Music Specification has been updated to include the following:

  • Language Codes Clarification. When specifying languages, you can use any language code as long as it is a valid BCP 47 code.
  • Music Video Preview. New tags have been added to define a music video preview by clipping a continuous segment and preview image by using an optional image_time attribute.
  • Timecode Formats. Supported timecode formats that can be used in the <previews> block are outlined in a new appendix.
  • Vendor Offer Code for Tracks. The <vendor_offer_code> tag can now be used for tracks.

For more information on what's changed, see the iTunes Package Music Specification.