(RFC 6597 published April 2012, subtype last updated April 2012) Type name: application Subtype name: smpte336m Required parameters: rate: RTP timestamp clock rate. Typically chosen based on sampling rate of metadata being transmitted, but other rates can be specified. Optional parameters: None Encoding considerations: This media type is framed and binary; see Section 4.8 of [RFC4288]. Security considerations: See Section 8 of RFC 6597. Interoperability considerations: Data items in smpte336m can be very diverse. Receivers might only be capable of interpreting a subset of the possible data items; unrecognized items are skipped. Agreement on data items to be used out of band, via application profile or similar, is typical. Published specification: RFC 6597 Applications that use this media type: Streaming of metadata associated with simultaneously streamed video and transmission of [SMPTE-ST336]-based media formats (e.g., Material Exchange Format (MXF) [SMPTE-ST377]). Additional Information: none Person & email address to contact for further information: J. Downs ; IETF Payload Working Group Intended usage: COMMON Restrictions on usage: This media type depends on RTP framing, and hence is only defined for transfer via RTP ([RFC3550]). Transport within other framing protocols is not defined at this time. Author: J. Downs J. Arbeiter Change controller: IETF Payload working group delegated from the IESG.