DCI Specs - Digital Cinema Initiatives

• Unique identification• Track Type (i.e., Timed Text, subpicture)• Total Width In Pixels of the Image Track File (PNG files only)• Total Height In Pixels of the Image Track File (PNG files only)• Aspect Ratio (PNG files only)• Frame Rate• Position• Timing (Temporal)5.3.6. Auxiliary Track Files and ExtensibilityIt may be necessary to package auxiliary data or nonstandard essence for a specific usecase. In these cases the extension shall not interfere with the proper handling of the DCP byan otherwise compliant system. As a best practice, extensions should adhere to therequirements given in this section and to any extension requirements or guidelinespresented in the relevant standards documentation.5.4. Composition Playlists5.4.1. IntroductionComposition Playlists (CPL) are textual lists that define how elements of Digital CinemaCompositions are played back in a presentation. The content owner creates theComposition Playlist in a post-production environment. For encrypted essence, theComposition Playlist shall be digitally signed such that modifications to the CompositionPlaylist (and/or the associated composition) can be detected.5.4.2. File FormatThe Composition Playlist is required to use the secure (digitally signed) text-based XML fileformat.5.4.3. Human Readable InformationThe Composition Playlist is required to contain the following human readable information inEnglish (default) but can be provided in other languages as well.5.4.3.1. General Information• A Composition Playlist is required to be identified by ISAN [ISO 15706] orUMID [SMPTE 330M-2004 Television – Unique Material Identifier (UMID)].• Content Title in human readable text• Content Kind (e.g., Feature, Trailer, Logo, Advertisement)• Content Version• Language• CountryDCI Digital Cinema System Specification v.1.2 Page 53