2. ICMP functionality
Key Delivery Message (KDM)
The security key for each movie is delivered in a unique KDM for each digital cinema server.
The security key is encrypted within the KDM, which means that the delivery of a KDM to the
wrong server or wrong location will not work, and thus such errors cannot compromise the
security of the movie. The KDM is a small file, and is typically emailed to the exhibitor. To
create the correct set of KDMs for a site requires knowledge of the digital certificate in the
projection system´s media block.
Digital Cinema Package (DCP)
A Digital Cinema Package (DCP) is a collection of digital files used to store and convey Digital
Cinema (DC) audio, image, and data streams. The term has been defined by Digital Cinema
Initiatives (DCI). General practice adopts a fi le structure that is organized into a number of usu-
ally multi-gigabyte size Material eXchange Format (MXF) files, which are separately used to
store audio and video streams, and auxiliary index files in XML format. The MXF files contain
streams that are compressed, encoded, and encrypted, in order to reduce the huge amount
of required storage and to protect from unauthorized use. The image part is JPEG 2000 com-
pressed, whereas the audio part is linear PCM. The adopted (optional) encryption standard is
AES 128 bit in CBC mode. The newer SMPTE standards are used to conform the recommen-
dations among different tool vendors and producers. Interop, the legacy DCP standard, is still
required to be supported by DCP players.
Digital Cinema Initiatives (DCI)
DCI is a joint venture of Disney, Fox, Paramount, Sony Pictures Entertainment, Universal and
Warner Bros. Studios. DCI’s primary purpose is to establish and document voluntary spec-
ifications for an open architecture for digital cinema that ensures a uniform and high level of
technical performance, reliability and quality control. Note th
at the DCI specification is not a
standard. Standards for digital cinema are the domain of the Society of Motion Picture and
Television Engineers (SMPTE). "DCI compliant" is a term used to describe products that con-
form to the DCI specification. Products that have been tested per the DCI Compliance Test
Plan (CTP) are posted at the DCI compliance web site. Notably, DCI compliance does not
require compliance to the full set of SMPTE DCP standards. A copy of the most recent DCI
specification can be downloaded from the DCI web
site (h
ttp://dcimo vi es.com).
2.12 ICMP configuration via Communicator
About ICMP configuration
Following parameters are available to configure the ICMP:
• Global settings: allows defining name of the ICMP, host name (network identifier) and IP address
which can be used for communication with external content devices.
• User settings: definition of all users allowed on the ICMP.
• Server settings: definition of access to servers and storage libraries of content (movies, KDM, etc.).
• Player settings: Audio delay and audio output frequency.
• Audio channel: allows defining the mapping of audio channels (content) on each audio output (AES
outputs of the ICMP).
• Scheduler setting: Enable/Disable scheduler at startup, delays allowed in scheduler mode and length
of schedule history.
• Devices: allows defining communication ports settings, to access external devices controlled by the
automation.
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R5905722 ICMP 09/11/2016
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