NMOS Now and Next

Presenters : Peter Brightwell - BBC

Year : 2019

dlp_document_download : AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 1 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 C U R A T E D B Y NMOS Now and Next Peter Brightwell BBC R&D I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 EBU Tech 3371 Technology Pyramid for Media Nodes Media Transport Configuration & Monitoring Security Discovery & Connection Time & Sync Widely available Partially available Rarely available AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 2 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Media Transport Configuration & Monitoring Security IS-04, IS -05, BCP -002 IS-06, IS -07, IS -08 BCP -003, IS -10 Discovery & Connection Time & Sync ST 2110 ST 2059 JT-NM TR -1001 -1 AMWA NMOS How NMOS and TR -1001 address the pyramid I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Networked Media Open Specifications •Specifications for discovering, connecting and managing resources •Developed by AMWA, published openly via GitHub •Tested at Networked Media Incubator workshops •Web -friendly: JSON, REST HTTP, WebSockets , message queues … 4 amwa -tv.github.io/nmos Specifications Documentation Developer resources Wiki AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 3 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA NMOS Specifications amwa -tv.github.io/nmos ID Name Status IS-04 Discovery and Registration AMWA Specification (Stable) IS-05 Device Connection Management AMWA Specification (Stable) IS-06 Network Control AMWA Specification IS-07 Event & Tally AMWA Specification IS-08 Audio Channel Mapping AMWA Specification IS-09 System Work In Progress IS-10 Authorization Work In Progress MS -04 ID & Timing Model Work In Progress BCP -002 -01 Natural Grouping AMWA Specification BCP -003 -01 API Security: Communications AMWA Specification BCP -003 -02 API Security: Authorization Work In Progress I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA IS -04 Discovery and Registration What does it do? •Allows control and monitoring applications to find the resources on a network Why does it matter? •Enables for automation and reducing manual overhead •Essential for dynamic deployment How does it work? •Media Nodes locate IS -04 registry using DNS -SD (unicast preferred) •Media Nodes register their resource information with HTTP + JSON •Applications query with HTTP and/or subscribe with WebSockets 6 Registry Control and Monitoring Applications Media Nodes AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 4 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA IS -05 Device Connection Management What does it do? •Provides a transport -independent way of connecting Media Nodes •Supports single + bulk connections, immediate + delayed connections Why does it matter? •ST 2110 does not specify how to do this •Danger of multiple proprietary approaches •Provides extensibility to other types of IP transport How does it work? •IS-04 provides information about Senders and Receivers •Control application sends instructions to Media Nodes •transportfile parameter conveys the connection information for ST 2110 streams 7 Control Application Media Nodes I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Media Node Sender Media Node Receiver Application Logic IS-04 Registry ST 2110 or other stream SDP SDP Multicast subscribe IS -05 and IS -04 working together AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 5 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA IS -06 Network Control What does it do? •Lets broadcast control applications manage what happens on the network itself Why does it matter? •Ethernet switch output ports might only support a limited number of media flows before they start dropping packets ‒This is different to what happens in a typical SDI router ‒Which means corrupted video and audio How does it work? •"Northbound" API from network fabric’s controller •Provides topology discovery, flow authorization and assurances of flow bandwidth 9 Broadcast Controller I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA IS -07 v1.0 Event and Tally What does it do? •Provides an IP -friendly mechanism to carry time -sensitive information •For example: camera tally information, audio levels, control panel button presses and status Why does it matter? •ST 2110 does not provide an equivalent to GPI functionality •Danger of multiple proprietary approaches •Consistency with other NMOS specifications How does it work? •Media Nodes emit and consume state and state change info •Lightweight messages sent using WebSockets or MQTT •Message flows connected using IS -05 10 Media Node Data Sender Media Node Data Receiver WebSocke t or MQTT messages IS-05 connection Netw ork Controller NM OS Services Netw ork Control API IP Network NetConf, OF and others AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 6 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA IS -08 v1.0 Audio Channel Mapping 11 What does it do? •Allows channel -level operations within NMOS environments •For example: muting channels, swapping languages … Why does it matter? •Expected functionality for real world use •Not included in IS -05’s functionality How does it work? •Controller gets channel information from sending Node •…and sends mapping matrix to the receiving Node •Can also do sender -side matrixing I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA BCP -002 -01 Natural Grouping 12 What does it do? •Defines best practice for tagging groups of resources based on the function of a device, for example: ‒2110 -20, -30, -40 senders within a camera ‒2110 -20 receivers for multiviewer panes Why does it matter? •Can simplify "bulk" connections •Not defined in IS -04 or IS -05 •Avoid different vendors taking different approaches How does it work? •Specifies a grouphint tag for NMOS JSON •Types of tags are maintained in a parameter register AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 7 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA MS -04 Identity and Timing Model 13 What does it do? •Formalizes concepts such as Source, Flow, Time Value … ‒Re-examines the JT -NM reference architecture model taking into account many typical workflows •Provides a basis for new specifications Why does it matter? •Increased content reuse means increased reliance on end -to -end models •ST 2110’s RTP timestamps are insufficient, so we need a model for future extensions How does it work? •Separate content with business value (Sources, Flows) from the systems that process it •Explain through scenarios, formalize with UML I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 AMWA IS -09 System API 14 What does it do? •Provide Media Nodes with "global" information about their environment ‒e.g. PTP settings Why does it matter? •We need systems to start working asap after (re)connection or power -up •DNS, DHCP, etc. provide a lot of what a Media Node needs … but not everything How does it work? •Read -only JSON resource, compatible with TR -1001 System Resource AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 8 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 C U R A T E D B Y Securing APIs IP brings new cybersecurity risks, including risks to the control plane I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 BCP -003 -01 API Security: Communications Best practice for encrypting HTTP and WebSocket messages • TLS 1.3 preferred, TLS 1.2 allowed • Recommends appropriate cipher suites • Recommendations for X.509 PKI Encrypted IS -04 + IS -05 are now the default at AMWA workshops AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 9 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 BCP -003 -02 API Security: Authorization •Enables API server to verify what client may access •Based on OAuth 2.0 Control system Authentication Server NMOS Registry / Media Node Accept or reject request I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 State of specifications Published •IS-04 v1.0, v1.1, v1.2 , v1.3 •IS-05 v1.0 , v1.1 •IS-06 v1.0 •IS-07 v1.0 •IS-08 v1.0 •BCP -002 -01 •BCP -003 -01 minimum required for TR -1001 -1 Work In Progress •MS -01 ID and Timing •BCP -003 -02 Authorization •IS-09 System API •IS-10 Authorization API AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 10 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 NMOS Resource Sharing AMWA and VSF are looking at scenarios… •Within a facility: federated IS -04 registries •OB Truck delivery into broadcast centre •Multi -campus workflows VSF 2110 -over -WAN project •Defining a WAN side of gateway •Feeds into ongoing NMOS work 19 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Testing •New work Incubated at AMWA workshops ‒With VPN available for testing APIs in advance •JT -NM Tested Event Wuppertal August ‒Significant participation in TR -1001 -1 / NMOS tests •AMWA testing tool: github.com /AMWA -TV/ nmos -testing ‒Python, open source, extensible ‒Allows vendors to start testing in advance ‒Saves time at events 20 AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 11 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 NMOS Wiki •Help with the specs and docs •Information about available implementations and tools •Resources for developers •Resources for users github.com/AMWA -TV/nmos/wiki 21 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Future Zone demonstration SMPTE •ST -2110 -20 •ST -2110 -30 •ST -2110 -40 •ST -2022 -7 AMWA • NMOS IS -04 • NMOS IS -05 • NMOS IS -07 • BCP -002 -01 JT -NM • TR -1001 -1 • Managing video, audio, ANC and time sensitive data • Control logic uses generic configurable components AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 12 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Future Zone demonstration I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Feedback from user projects BBC Cardiff •NMOS required in tenders, much effort spent, has required proprietary workarounds CBC Montréal •NMOS required in tenders, workarounds with VSM, not a blocker tpc Zürich •Using NMOS alongside alternatives until market matures Common comment: "chicken and egg" •R&D incubates but previously not reflected in available product •Importance not sufficiently communicated inside organisations ( inc. to sales) TR -1001 and JT -NM Tested should make a big difference for the future 24 AIMS IP Showcase IBC 2019 September 2019 Curated by Video Services Forum vsf.tv 13 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Stay right here for more… 10.30 Automated Testing 11.00 IS -07 11.30 Security 12.00 Resource Sharing for WAN 25 I P S H O W C A S E T H E AT R E AT I B C 2 0 1 9 : 1 3 –1 7 S E P T 2 0 1 9 Thank you Thank you to our Media Partners Peter Brightwell, BBC peter.brightwell@bbc.co.uk 26