If SMPTE standards are not used for distribution today, then how is content distributed?
Products installed today meet an informal specification called “Interop.” The Interop DCP (digital cinema package) is based on simplified and early standards drafts to promote interoperability in the early phase of the digital cinema rollout. Interop DCP, however, is not SMPTE DCP compliant, and does not support many of the features built-in to the SMPTE DCP. The transition from Interop DCP to SMPTE DCP recommended by the ISDCF is documented in its Timeline for Accessibility.