Standard

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Most Digital Cinema Packages are now being distributed in the SMPTE-DCP format. Prior packages adhered to the Interop-DCP format. The design of these Interop packages adheres to a de facto standard that was common practice. The industry has moved to the formal SMPTE (Society of Motion Picture and Television Engineers) standards. This mainly impacts servers, not projectors; however, rendering of subtitles in the projectors may be affected. In order to identify the construction of the package, the standard is explicitly denoted IOP for an Interop-DCP package and SMPTE for a SMPTE-DCP package.

The standard of the CPL can be determined by the XML NameSpace (xmlns) used topmost level of the /CompositionPlaylist

SMPTE-DCP CPLs use the following SMPTE XML NameSpace

<CompositionPlaylist xmlns=”http://www.smpte-ra.org/schemas/429-7/2006/CPL”>
  …
</CompositionPlaylist>

Interop-DCP CPLs use the following DigiCine XML NameSpace

<CompositionPlaylist xmlns=”http://www.digicine.com/PROTO-ASDCP-CPL-20040511#”>
  …
</CompositionPlaylist>