Networked Media Open Specifications: Introduction
About NMOS
NMOS is a family name for specifications produced by the Advanced Media Workflow Association related to networked media for professional applications.
For a non-technical introduction to NMOS see AMWA’s overview page.
The tables below list the current specifications and provide links to their documentation on specs.amwa.tv. The “Release” links will take you to the documentation and download page (↓) for the latest release of recent versions of the specification.
The tables no longer include direct links to the GitHub repos. These are available through the NMOS CI Dashboard.
The NMOS API Testing Tool supports the majority of these specifications.
NMOS Interface Specifications (IS)
These specify NMOS APIs using RAML, JSON Schema and normative text, supported by examples and other text:
| Id | Name | Spec Status | Release(s) |
|---|---|---|---|
| IS-04 | Discovery & Registration | AMWA Specification (Stable) | |
| IS-05 | Device Connection Management | AMWA Specification (Stable) | |
| IS-06 | Network Control | Deprecated | |
| IS-07 | Event & Tally | AMWA Specification | |
| IS-08 | Audio Channel Mapping | AMWA Specification (Stable) | |
| IS-09 | System Parameters | AMWA Specification | |
| IS-10 | Authorization | AMWA Specification | |
| IS-11 | Stream Compatibility Management | Work In Progress | |
| IS-12 | Control Protocol | Work In Progress | |
| IS-13 | Annotation | Work In Progress |
NMOS Data Model Specifications (MS)
These model the resources used in NMOS APIs:
| Id | Name | Spec Status | Release(s) |
|---|---|---|---|
| MS-04 | ID & Timing Model | AMWA Specification | |
| MS-05-01 | NMOS Control Architecture | Work In Progress | |
| MS-05-02 | AMWA NMOS Control Framework | Work In Progress | |
| MS-05-03 | AMWA NMOS Control Block Specs | Work In Progress |
NMOS Best Common Practices (BCP)
These specify best practice for use of NMOS APIs:
| Id | Name | Spec Status | Release(s) |
|---|---|---|---|
| BCP-002-01 | Natural Grouping | AMWA Specification | |
| BCP-002-02 | Asset Distinguishing Information | AMWA Specification | |
| BCP-003-01 | Secure Communications in NMOS Systems | AMWA Specification | |
| BCP-003-02 | Authorization in NMOS Systems | AMWA Specification | |
| BCP-003-03 | Certificate Provisioning in NMOS Systems | AMWA Specification | |
| BCP-004-01 | Receiver Capabilities | AMWA Specification | |
| BCP-005-01 | EDID to Receiver Capabilities Mapping | Work In Progress | |
| BCP-006-01 | NMOS With JPEG XS | AMWA Specification | |
| BCP-006-02 | NMOS With H.264 | Work In Progress | |
| BCP-006-03 | NMOS With H.265 | Work In Progress |
NMOS Informative Documents (INFO)
These provide NMOS implementation guides:
| Id | Name | Spec Status |
|---|---|---|
| INFO-002 | Security Implementation Guide | AMWA Specification |
| INFO-003 | Sink Metadata Processing Architecture | Work In Progress |
| INFO-004 | Implementation Guide for DNS-SD | AMWA Specification |
| INFO-005 | Implementation Guide for NMOS Controllers | AMWA Specification |
| INFO-006 | Implementation guide for NMOS Device Capabilities Control | Work In Progress |
NMOS Parameter Registers
These specify constants for many types of NMOS parameter values:
Documentation
The formal specification is provided in this GitHub repository. These pages render the documentation and APIs (which are specified in RAML and JSON Schema).
| Repository | Default Branch | Lint (default) | Render (all) |
|---|---|---|---|
| nmos | main |  |
 |