The metadata defined and registered in this specification (Timestamp, Timescale, Config, Video Frame Marking, and Audio Level) may be sensitive metadata that should be encrypted end-to-end. Applications requiring confidentiality of this metadata SHOULD use the Private properties mechanism described in Section 3.1.3 to encrypt sensitive metadata alongside the payload.
When using [SecureObjects] for end-to-end encryption:
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Sensitive metadata (timestamps, audio levels, frame marking) can be encrypted using Private properties
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Immutable properties are authenticated but visible to relays
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Media switches that need metadata access require appropriate key material