Introduction to AES67 and Relationship to ST 2110

Presenters : Terry Holton - Yamaha

Year : 2019

dlp_document_download : Introduc)on to AES67 and its rela)onship with SMPTE ST 2110-30 AES67 and SMPTE ST 2110 • Two significant open standards have emerged in the past several years to provide wide-ranging interoperability for professional media networking • AES67 and SMPTE ST 2110 are core standards in the AIMS roadmap • AES67 first published in 2013; updated in 2015 and 2018 • SMPTE ST 2110 suite of standards; iniJal secJons published in December 2017 • What is the relaJonship between these two standards? AES67 Standard What was the original goal? • "Provide a method to connect disparate Audio-over-IP systems to achieve workaround-free networked audio interoperability" How is AES67 defined? • Interoperability Standard for high performance Audio-over-IP networks • Based on exisJng and trusted IT standards • This ensures compaJbility with exisJng network infrastructure • Also allows coexistence with other IT data AES67 Standard Problem Statement • Audio-over-IP (Networked Audio) provides simpler and beUer connecJon between audio equipment • Coupled with many advantages, one clear challenge presented itself: Compa)bility • While each Audio-over-IP soluJon offered in- system connecJvity, there was no standard to provide inter-system connecJvity Livewire QLAN RAVENNA Dante Control & Monitoring Discovery Connection Management Session Description Tr a n s p o r t Quality of Service Encoding & Streaming Synchronization Media Clock Proprietary Proprietary Proprietary Proprietary Proprietary, IPv4 DiffServ L16-32, ≤4 ch /flow PTP1588-2002 44.1kHz, 192kHz HTTP, Ember+ Bonjour RTSP, SIP, IGMP SDP RTP, IPv4 DiffServ L16-32, ≤64 cha/ str PTP1588-2008 44.1kHz – 384kHz TCP, HTTP Proprietary Proprietary Proprietary RTP, IPv4 DiffServ 32B-FP, ≤16 ch /str PTP1588-2008 48kHz HTTP, Proprietary Proprietary Proprietary, HTTP, IGMP Channel # RTP, IPv4 DiffServ /802.1pq L24, st , surr Proprietary 48kHz The Road to IncompaJbility… Livewire QLAN RAVENNA Dante Control & Monitoring Discovery Connection Management Session Description Tr a n s p o r t Quality of Service Encoding & Streaming Synchronization Media Clock Proprietary Bonjour, SAP, IS-04 … SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz HTTP, Ember+ TCP, HTTP HTTP AES67 CompaJbility Mode SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz Bonjour, SAP, IS-04 … Bonjour, SAP, IS-04 … Bonjour, SAP, IS-04 … AES67 Livewire QLAN RAVENNA Dante Control & Monitoring Discovery Connection Management Session Description Tr a n s p o r t Quality of Service Encoding & Streaming Synchronization Media Clock Proprietary Bonjour, SAP, Other SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz HTTP, Ember+ TCP, HTTP HTTP AES67 CompaJbility Mode SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz Bonjour, SAP, Other Bonjour, SAP, Other Bonjour, SAP, Other With a baseline of common protocols and standards, AES67 enables audio interoperability between products featuring different network technologies such as Dante, RAVENNA, QLAN, Livewire, WheatNet-IP and others. Livewire QLAN RAVENNA Dante Control & Monitoring Discovery Connection Management Session Description Tr a n s p o r t Quality of Service Encoding & Streaming Synchronization Media Clock Proprietary Bonjour, SAP, Other SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz HTTP, Ember+ TCP, HTTP HTTP AES67 CompaJbility Mode SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz Bonjour, SAP, Other Bonjour, SAP, Other Bonjour, SAP, Other The Networked Audio systems shown here are ‘Complete SoluJons’ AES67 was not intended to be a ‘Complete SoluJon’ AES67 is simply a mode of operaJon allowing audio interoperability between exisJng ‘Complete SoluJons’ Livewire QLAN RAVENNA Dante Control & Monitoring Discovery Connection Management Session Description Tr a n s p o r t Quality of Service Encoding & Streaming Synchronization Media Clock Proprietary Bonjour, SAP, Other SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz HTTP, Ember+ TCP, HTTP HTTP AES67 CompaJbility Mode SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz SIP SDP RTP, IPv4 DiffServ L24, ≤8 ch /stream PTP1588-2008 48kHz Bonjour, SAP, Other Bonjour, SAP, Other Bonjour, SAP, Other Therefore, AES67 complements each of these soluJons, it does not compete with them IP RAVENNA Livewire Q-LAN WheatNet Dante X X X X AES67 AES67 Enables Disparate Networked Audio SoluJons to Talk to Each Other What is SMPTE ST 2110? •  Standard for transport of video, audio and data over IP networks primarily for broadcast applicaJons •  Video, audio and data carried as independent flows Video Source Audio Source Data Source Video Flow Audio Flow Data Flow PTP Timebase (ns granularity) Source Device Timestamp Flow ID Payload What is the Role of SMPTE ST 2110? •  Flexible alternaJve to SDI for real Jme systems •  Enables greater flexibility for contribuJon, producJon and playout workflows IP Network SMPTE ST 2110 Suite of Standards SMPTE ST 2110-10 Timing and definiJons – SMPTE ST 2059 aka PTP SMPTE ST 2110-20 Uncompressed acJve video – RFC-4175 transport of video SMPTE ST 2110-30 Uncompressed PCM audio – AES67 transport of audio SMPTE ST 2110-40 Ancillary data – IETF ANC 291 SMPTE ST 2110-21 Video Sender Traffic Shaping for uncompressed video SMPTE ST 2110-22 Carriage for compressed video over IP SMPTE ST 2110-31 Full AES3 transport SMPTE ST 2110-30 A CONSTRAINED SUBSET OF AES67 CONSTRAINTS = BETTER INTEROPERABILITY (via Jghter operaJng point definiJon) SMPTE ST 2110-30 A CONSTRAINED SUBSET OF AES67 PRIMARY OPERATING POINT: •  1 msec packet Jmes •  2 & 8 channels per stream •  Common PTP operaJng point per AES-R16-2016 •  RTP offset = 0 (unique to ST 2110-30) SMPTE ST 2110-30 A CONSTRAINED SUBSET OF AES67 CONSTRAINTS = BETTER INTEROPERABILITY (via Jghter operaJng point definiJon) These two operaJng points (ST 2110-30 Level B & Level C) both support a shorter packet Jme of 125 µs , ideal for low- latency LIVE PRODUCTION LEVEL B: up to 8 channels/stream LEVEL C: up to 64 channels per stream SMPTE ST 2110-30 A CONSTRAINED SUBSET OF AES67 CONSTRAINTS = BETTER INTEROPERABILITY (via Jghter operaJng point definiJon) White Papers