NMOS Sender Attributes
This Sender Attributes parameter register contains extensible attributes and their permitted values which may be used in Sender resources within the AMWA IS-04 NMOS Discovery and Registration Specification.
Criteria
- Each entry MUST be associated with an existing defined NMOS Transport, and MAY additionally relate to a specific Format and/or
media_type. - Each entry MUST define or refer to an existing unique attribute name within the scope of a Sender.
- Each entry MUST have a short description.
- Each entry MUST identify any AMWA Specifications and versions from which it is valid.
- Each entry MUST define all permitted values for the attribute, either via an explicit list, well-defined references or both.
- Entries MAY be used to expand the set of permitted values associated with an existing extensible attribute.
- Each entry MUST link to a schema definition held within this repository (unless covered by a schema within the original specification).
- Additions and updates to this parameter register are to be submitted via a Pull Request (PR) according to the General Procedures and Criteria.
As noted in IS-04 v1.3, new Sender attributes may be defined here as opposed to requiring a new version of the specification.
Query APIs and their clients which support v1.3 of IS-04 or operate in a mixed-version environment MUST be tolerant to the presence of Sender attributes and values which may be added at a later date. This is further detailed in the IS-04 Upgrade Path document.
Attributes
Note: JSON schemas supporting validation of all the attributes defined in this register are available as sender_register.json. These MAY be used in addition to the schema, sender.json, found in the AMWA IS-04 specification.
Bit Rate
- Name:
bit_rate - Description: Bit rate, in kilobits/second, including the transport overhead.
- Specification: AMWA BCP-006-01
- Applicability:
urn:x-nmos:transport:rtp - Permitted Values:
- Since AMWA IS-04 v1.3, integer values expressed in units of 1000 bits per second, rounding up
- The value is for the IP packets, including the RTP, UDP and IP packet headers and the payload
Packet Transmission Mode
- Name:
packet_transmission_mode - Description: Identifies the JPEG XS packetization and transmission mode.
- Specification: AMWA BCP-006-01
- Applicability:
urn:x-nmos:transport:rtp - Permitted Values:
- Since AMWA IS-04 v1.3, string values representing the valid combinations of the RFC 9134 transmission mode (T) bit and packetization mode (K) bit, as enumerated in the schema accompanying this register
codestream(T=1, K=0)slice_sequential(T=1, K=1)slice_out_of_order(T=0, K=1)
- When the attribute is omitted, a JPEG XS Sender is assumed to be using the
codestreampacketization mode
- Since AMWA IS-04 v1.3, string values representing the valid combinations of the RFC 9134 transmission mode (T) bit and packetization mode (K) bit, as enumerated in the schema accompanying this register
ST 2110-21 Sender Type
- Name:
st2110_21_sender_type - Description: Identifies the traffic shaping and delivery timing requirements of ST 2110-21 to which the Sender complies.
- Specification: AMWA BCP-006-01
- Applicability:
urn:x-nmos:transport:rtp - Permitted Values:
- Since AMWA IS-04 v1.3, values defined for the TP format-specific parameter in any published revision of SMPTE ST 2110-21
- Since ST 2110-20:2017
2110TPN2110TPNL2110TPW