A technical comparison between the legacy "Interop" standard and the modern "SMPTE" Digital Cinema Package specifications.
The original "inter-operational" standard created to ensure early digital cinema servers could play content reliably.
Strictly 24 fps.
48 fps supported rarely for early HFR.
CineCanvas XML.
Often burned-in or vendor specific. No advanced typography.
Basic 5.1 / 7.1.
Does not support Dolby Atmos or immersive audio formats.
XML Signature.
Less robust metadata handling.
The current ISO standard maintained by the Society of Motion Picture and Television Engineers. Robust and future-proof.
Flexible support.
SMPTE Timed Text (XML).
Supports encryption, custom fonts, and advanced positioning.
Advanced Audio.
Native support for Dolby Atmos (IAB) and wild track channel mapping.
Rich CPL Metadata.
Includes Content Kind, Ratings, and extensive composition details.