Digital Cinema Packages are sent via physical hard drive or (more commonly nowadays) digitally transmitted via a secure tunnel over the ‘net. They don’t stream in general.
Once a complete DCP is received by the exhibitor it’s ingested into their central management system or directly into players. However, they can’t play it without a KDM – a cryptographic key that uses the serial number of the security manager to decrypt the DCP and make it playable.
Feel free to bug me with questions, literally been doing this since 2012.
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