Robust, Flexible Offline Encryption of Video Assets
The Verimatrix Video Pre-Processor (VPP) component of the Video Content Authority System (VCAS) provides an integrated and highly flexible mechanism to generate encrypted content files in preparation for VOD delivery. VPP supports automation of the content ingestion process from receipt of intermediate files and meta-data, through optional watermark insertion to provisioning the VOD server and subscriber entitlement system. The integration of VPP provides an efficient and robust operational front-end for a wide range of added-value pay-TV services.
Working with the Verimatrix Content Security Manager for key generation, VPP encrypts video assets using proven AES or RC4 algorithms, which can be applied at an operator specific percentage level. Verimatrix has architected a fully MPEG-aware video encryption process to enable preservation of key header fields while supporting the widest range of indexing utilities, such as those used in providing VOD "trick play" features. The use of MPEG transport stream and DVB standard ECM formats enable secure insertion of a flexible range of control data within each stream, including copy control, watermarking management, services classes and content ratings ("parental control") data.
VPP employs encryption and key management protocols which are symmetrical to those used by the RTES and MultiCAS broadcast encryption components of VCAS. This approach improves the flexibility of system configurations that can be deployed and offers near seamless support for PVR and nPVR functions.
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