AES67 and SMPTE 2110-30

Presenters : Rick Seegull - Riedel

Year : 2018

dlp_document_download : AES67 and SMPTE 2110-30Rick Seegull, Riedel Communications -Manager System Consulting To p i c s f o r D i s c u s s i o n :•Migration to IP –birth of ST 2110•Importance of Standards•AES67•AES67 Compared to ST 2110-30•ST 2110-30 Compared to DANTE AES67 3What is the Goal in moving to IP?Move workflows of a Broadcast Ecosystem, for Television and live events to an IP based system:•More flexibility to Production Teams:•Decrease the time of implementation of new systems (less cabling)•Decentralize -placing components where they are required•Allow easy routing of signals without the need for changes in cabling•Simplify operations via workflow automation•All different systems integrated in one user interface (no more dedicated user interfaces)•Adaptable Workflows•Improve the relation between cost, efficiency and systems flows Migrating to IP is easy…..Ta ke T h i s … .Add This….+ Migration complete…..? Move to AoIP–Many Choices •Open to all MFG’s•No cost of entry•Interoperability between products•Not only Commonality of Audio Devices7Always look for commonality thru industry standards Choosing one standard for entire workflow Importance of SMPTE 2110•Works on Layer 3 OSI•Uses COTS Hardware**•Standard for entire Broadcast Production•Video•Audio•Ancillary Data Ta k i n g a w a l k t h r o u g h t h e e v o l u t i o n o f S T 2 1 1 0 Active VideoVANCHANC(w/ Audio)SDI VideoPro•Audio and Video always in Sync•Deterministic•East to trouble shootCon•Audio and Video multiplexed•Extra overhead used in H/V Blanking Active VideoVANCHANC(w/ Audio)SDI VideoST 2022-6 StreamIPUDPRTPHBRMTPayloadPro•Sync•Workflow remains the sameCon•Workflow remains the same•In-Efficient •Bad utilization of BW•Audio still embedded with Video•Good gateway technology and for WAN transportEncapsulated SDI over IP SDI VideoActive VideoVANCHANC(w/ Audio)IPUDPRTPHBRMT2022-6 PayloadPro•Workflow improves –SDI Video and Audio on same network•Each individually forwarded through the networkCon•Inefficient (Audio is transported 2x)•No sync / timing sensitiveST2022-6IPUDPRTPAES67 PayloadAdd AES67 for AudioStart with 2022-6 Active VideoVANCHANC(w/ Audio)SDI VideoTR-03/ST 2110 StreamIPUDPRTP4175 PayloadPro•All elemental flows separate•efficientVideo only -RFC 4175IPUDPRTPAES67 PayloadAES67 for AudioIPUDPRTPANC PayloadANC Metadata –ST 291 •VSF TR-03 èSMPTE 2110•Separates all elements into individual streams •Video èRFC 4175•Audio –AES67 •ANC Metadata ST 291•SMPTE 2059 (PTP-1588v2) for synchronization 15IPv4UDPRTPRFC 4175PayloadIPv4UDPRTPAES67 PayloadSMPTE 2110IPv4UDPRTPANC PayloadSMPTE 2059SMPTE 2110-ST 2110-20-ST 2110-30-ST 2110-40-ST 2110-10 Don‘t create Islands16Audio IslandIntercom IslandVideo Island ST2110 –for the entire production•2110 allows individual routing of Video and audio•"Elementary" Streams17ST 2110-20ST 2110-30 SMPTE 2110 –Professional Media over Managed IP Networks•2110-10: System Timing and Definitions•2110-20: Uncompressed active video•2110-21: Traffic Shaping and Delivery Timing for Uncompressed/Active Video •2110-30: PCM Digital Audio•2110-31: AES3 Transparent Transport•2110-40: Transport of SMPTE Ancillary Data18 AES67Purpose –Bridging current AoIPtechnologies •AES67:•Created by AES in 2013•Broadcast Radio and Broadcast Audio•Layer 3•Uses existing protocols•Ty p i ca l l ate n c y o f 6 m s•48 kHz -16 or 24 bits•SIP•Use PTPv2•Can be Unicast and Multicast•Can use corporate networks•It's a 1Gb network•In large quantities of audio channels, QoS and IGMP is necessaryOpen Standard vs ST 2110-30 ST 2110-30 (AES67 Constraints)AES67ST 2110-30PTP versionIEEE1588-2008 (PTPv2)IEEE1588-2008 (PTPv2)PTP ProfileDefault or Media ProfileST-2059-2: Media Profile only (Message rates of 4/s)Media Clock OffsetShould be randomMust be zeroPTP Master/SlaveMaster or SlaveMust be configurable for SLAVE ONLY MODE (used when ever a grand master is specified)Bit Depth16 bit or 24 bitONLY 24 bitConnection ManagementSIP for UnicastNothing Defined but manual connection must be possibleTra n s p o r tUnicast or MulticastMulticast onlyPayload and Packet Time•1-8 Channels, 1ms, @48kHz mandatory•all other possibilities allowed•Level A(x): 1-8 Channels, 1ms, @48/(96) kHz•Level B(x): 1-8 Channels, 0.125ms, @48/(96) kHz•Level C(x): 1-64 Channels, 0.125 ms, @48/(96) kHz ST 2110-30 vs Dante AES67 compared to ST 2110-30ST 2110-30Dante –AES67CommentsPTP versionPTPv2 ST-2059-2PTPv2 AND PTPv1Dante Aes67 uses PTPv2but the device also needs toreceive PTPv1.Works, when the Switchalso passes PTPv1Multicast IP AddressAny address from 239.0.0.1-239.255.255.255Only addresses that aredefined in the Scope withinDante controller.Works, when SMPTE 2110Device streams in the scopedefined by DantePTP Master/SlaveMust be configurable for SLAVE ONLY MODE (used when ever a grand master is specified)Master/Slave. No Slave onlyMust be configurable for SLAVE ONLY MODE (used when ever a grand master is specified)Bit Depth24 bit Only24 bit OnlyConnection ManagementNothing Defined but manual connection must be possibleSAP Discovery. No manual configuration possibleRequires 3rdparty softwarePayload and Packet Time•Level A(x): 1-8 Channels, 1ms, @48/(96) kHz•Level B(x): 1-8 Channels, 0.125ms, @48/(96) kHz•Level C(x): 1-64 Channels, 0.125 ms, @48/(96) kHz•1-8 Channels, 1ms, @48kHz onlyDante only supports oneconfiguration.Works, when the SMPTE device receives in 48kHz, 24bit, 1ms, up to 8Channels. Senders require SAP for Discovery Don’t be scared! Help is on the way! Announced at NAB! Make certain Interoperability is achievable•Just because two devices state they are AES67 does not assure interoperability•If two devices state ST 2110-30•Interoperability = Thank YouRick Seegull, Riedel Communications Inc.rick.seegull@riedel.net+1-805-404-8036