Firstly DCPs are not wrappers that contain MXFs. From what I remember DCP predates MXF.
From memory (its been 8 years since I've actually dealt with creating them) They are effectively zip files that contain JPEG2000, lots of metadata and some sound tracks.
Crucially, the authoring and encryption are controlled by a central authority. Each projector needs to be registered with a KDM to make sure it can receive decryption keys. http://www.artsalliancemedia.com/software/screenwriter#featu... is one system for managing projectors.
Getting a distribution DCP is pretty hard, also Keys are short lived. But, someone people create non-encrypted DCPs for various purposes.
If its a MXF, then that suggests its either from a finishing house, or more likely a producer's laptop. (ie how wolverine got leaked, a pissed up producer leaving an unencrypted laptop on a plane. Even though their flight was pointless, as there are many remote viewing systems about. )
DCP developer here. DCP track files are MXF. SMPTE ST 377:2004 (MXF) predates SMPTE ST 429-3:2007 (DCP Sound and Picture.) ST 377 is a normative reference of ST 429-3. There is no zip file. There is no central registration for encryption. Each Media Block has a 2k RSA key (usually generated inside the FIPS 140 boundary), and each content distributor has a collection of the respective X.509 certificates.
Firstly DCPs are not wrappers that contain MXFs. From what I remember DCP predates MXF.
From memory (its been 8 years since I've actually dealt with creating them) They are effectively zip files that contain JPEG2000, lots of metadata and some sound tracks.
Crucially, the authoring and encryption are controlled by a central authority. Each projector needs to be registered with a KDM to make sure it can receive decryption keys. http://www.artsalliancemedia.com/software/screenwriter#featu... is one system for managing projectors.
Getting a distribution DCP is pretty hard, also Keys are short lived. But, someone people create non-encrypted DCPs for various purposes.
If its a MXF, then that suggests its either from a finishing house, or more likely a producer's laptop. (ie how wolverine got leaked, a pissed up producer leaving an unencrypted laptop on a plane. Even though their flight was pointless, as there are many remote viewing systems about. )