Rolling Out AES67 Into Real-world Applications

Transcription

1 Rolling Out AES67 Into Real-world Applications Topics: What is AES67? AES67 in the real world: sample applications Prerequisites: general network requirements Lessons learned Beyond: AES67 plug-fests & development

2 AES67 AES Standard for Audio Applications of Networks: High-performance Streaming Audioover-IP Interoperability published on September, 11th, 2013

3 Scope: Goal: Interoperability guidelines for professional, low latency audio over campus and local area IP networks using existing protocols wherever possible. Excludes: Non IP networking Low bandwidth media Data compression Low performance WANs and public Internet Video (should provide good basis for follow on video project) Technology providers may choose to implement interoperability as a special mode, or transition to it as their native mode

4 AES67 technology components: Synchronization: IEEE , default profile (media profile suggested) local media clock generation Network: IPv4 (IPv6), unicast / multicast & IGMPv2 Transport: RTP/AVC (RFC 3550 & 3551) / UDP / IP Encoding: 16 / 24 bit linear, 48 (44.1 / 96) khz, channel count: 1..8 Packet setup: 48 samples (6 / 12 / 16 / 192), max. payload size: 1440 bytes Quality of Service: DiffServ w/ 3 suggested traffic classes (DSCP) Connection management: SIP (unicast), SDP Discovery: excluded, but several recommendations given (i.e. ZeroConf, SAP and others)

5 AES67 the O negative of audio networking (Roland Hemming, Independent Audio Consultant, UK) AES67

6 Dante WheatNet RAVENNA Livewire Q-LAN X X AES67 X X IP

7 AES67 the O negative of audio networking ACIP AES67 AES67 AES67 RAVENNA

8 AES67 the O negative of audio networking When will it be available?

9 AES67 the O negative of audio networking When will it be available?

10 AIMS, the Alliance for IP Media Solutions (AIMS), is a non-profit trade alliance that promotes the open standards that broadcast and media companies use to move from legacy SDI systems to a virtualized, IP-based future quickly and profitably.

11 21st Century Fox 5280 Broadcast AJA Video Systems Arista Networks CBS Cisco Systems Euro Media Group Evertz EVS Grass Valley, A Belden Brand Harmonic Imagine Communications LAWO Net Insight Nevion Panasonic Snell Advanced Media Sony Corporation Tektronix The Telos Alliance Utah Scientific

12 AIMS open standards are based on the roadmap established by: - SMPTE , - VSF TR-03 - VSF TR-04 - AES 67

13 What is RAVENNA?

14 - Key Features: A layer 3 (IP) solution Can operate on most existing network infrastructures Allows phase-accurate distribution of media clocks Full bit-transparency with all media formats Supports concurrent operation of multiple media clocks and data formats Allows low latency for real-time critical applications Capacity scales with underlying network infrastructure Supports distribution and synchronization across network segments Full network redundancy support Based on Standards Open technology

15 An Open Technology platform: Based on technology publicly available No proprietary black box design Utilizes standard protocols Proven technology, widely supported Designed to work on existing networks No new network equipment required No proprietary licensing policy No cost per channel, suits all performance needs Draft on operating principles published since June 10 th, 2011

16 What is RAVENNA? RAVENNA Draft on Operational Principles Ingredients: 20 ml PTPv2 500 g RTP 1 pkt multicast 1 pinch of Bonjour Cooking order: 1. Stew PTP to order 2. Add RTP 3. Mingle with multicast 4. Add Bonjour on top Serve hot and Enjoy!

17 An Open Technology platform: Based on technology publicly available No proprietary black box design Utilizes standard protocols Proven technology, widely supported Designed to work on existing networks No new network equipment required No proprietary licensing policy No cost per channel, suits all performance needs Draft on operating principles published since June 10 th, 2011 Anybody can implement / support RAVENNA technology Supported by renowned companies from the ProAudio industry

18 RAVENNA Partners (& AES67 Supporters):

19 An Open Technology platform: Based on technology publicly available No proprietary black box design Utilizes standard protocols Proven technology, widely supported Designed to work on existing networks No new network equipment required No proprietary licensing policy No cost per channel, suits all performance needs Draft on operating principles published since June 10 th, 2011 Anybody can implement / support RAVENNA technology Supported by renowned companies from the ProAudio industry Broad market acceptance Active participation in AES X192 standardization TG RAVENNA supports AES67 standard

20 AES67

21 AES67 QoS three classes Media Format L16/L24 PCM 48 Samples per packet AES Audio channels Encoding 48kHz

22 AES67 + Discovery + Redundancy AES67 QoS three classes Media Format L16/L24 PCM 48 Samples per packet 1-8 Audio channels Encoding 48kHz + classes adjustable + AES/EBU, DSD/DXD, Video + 1, 6, 12, , , 96, 192, 384kHz

23 + Discovery + Redundancy More Features QoS three classes + classes adjustable Media Format L16/L24 PCM + AES/EBU, DSD/DXD, Video AES67 48 Samples per packet 1-8 Audio channels + 1, 6, 12, , 128 More Options Encoding 48kHz , 96, 192, 384kHz

24 AES 67 AES67

25 AES67 real-world example applications: Sports events (soccer World Cup & Asian Games 2014) Live broadcast (ESC 2015) Live events (40 th anniversary ONL Lille) Commercial installations (entertainment restaurant Finland) High-end recording (Merging Technologies)

26 Soccer World Cup 2014

27 Commentary System Soccer World Cup 2014

28 n Brazilian Telco to IBC in Rio Soccer World Cup 2014

29 @ Asian Games 2014

30 @ Asian Games 2014

31 @ Asian Games 2014 Conventional system setup:

32 IP-based Asian Games 2014

33 @ ESC 2015

34 Central Nova73 audio router w/ 10 RAVENNA-connected Dallis I/O units 6600 audio signals total 6 OB vans 45 commentary ESC 2015

35 AES67 Installed Sound Pilot: Nallikari restaurant complex, Oulu, Finland: NALLIKARI, ääniryhmät Jutel Oy, Jki a 6 3b 3c 7 4a 4b 1. Ravintolakabinetti 1 2. Ravintolakabinetti 2 3a. Ravintola lounge 3b. Aularavintola 3c. Ravintolasali 4a. Saunakabinetti 1 4b. Sauna 1 5a. Saunakabinetti 2 6. Terassi 5b. Sauna 2 7. Keittiö ja henkilökunta Lisäksi orkesteri / lavalaitteet 5a 5b Multi-zone restaurant environment with programmable background music Audio processing, playout, routing and remote control functions Wireless user control via Android tablets

36 AES67 Installed Sound Pilot: Nallikari restaurant complex, Oulu, Finland: Jutel HIPman audio management, processing & play-out system w/ RAVENNA Virtual Sound Card 30 IP-driven Genelec speakers Axia xnode for PTP GM and utility audio I/O (mic, monitoring) Android tabs for wireless control Remote maintenance access Common network for all services RAVENNA/AES67 audio streaming

37 10 Neumann DMI-8 (78 digital mics) 2 Lawo MC Merging ONL 2015 # 37

38 The IP-based Real-Time Media Network Rolling Out AES67 Into Real-world Applications A. Hildebrand A. Hildebrand # 38

39 Network requirements for AES67: Single LAN required for optimal performance, but segment bridging (including WAN) possible Network infrastructure must provide sufficient bandwidth on all potential links (no UDP packet loss, full switching capacity) Managed switches with adjustment capabilities for operational parameters required Support for QoS (DiffServ) mandatory especially in routed & mixed traffic environment Multicast / IGMPv2 support Native support for IEEE (PTP) optional (in larger or routed environment) Add l operational parameters may also need attention (e.g. traffic shaping)

40 Network requirements potential issues: PTP: sync quality in larger LANs + routed environments / WAN PTP support in switches / routers local PTP distribution of traceable time (i.e. GPS) QoS: leveling against other services requiring QoS Video + VoIP need lower prioritization Traffic shaping (strict priority) Multicast: switch-individual configuration IGMP configuration (protocol, querier) Avoid flooding (of unknown / unregistered multicast)

41 Lessons learned - project difficulties / problems (technical): Careful planning / documentation required: Network infrastructure, IP addresses, port assignments PTP parameters Switch configuration: QoS & multicast (flooding, IGMP querier) Stream configuration: packet setup, multicast addresses Device configuration / operation: Lack of common control & configuration application UIs look different divergent parameter names / values Physical setup: Unlocked BNC connectors, broken RJ45 connectors

42 Potential difficulties in corporate environment (the technical challenge): Traffic situation in larger LANs Bandwidth (stream accumulation): mean packet delay, PDV, packet loss Synchronization & stream service spanning multiple subnets Router configuration: multicast forwarding rules, prioritization (QoS) etc. PTP infrastructure: boundary clocks, local PTP traffic distribution etc. WAN: behavior of WAN infrastructure, balancing against other traffic, multicast, max. PDV (SLAs often relate to mean values!) Device control & access rights Integration with corporate directory services (LDAP etc.)

43 Potential difficulties in corporate environment (the human challenge): Operations staff not familiar w/ specifics of IT world IT staff not familiar w/ requirements of real-time media Mean delay + packet jitter (PDV) UDP / packet loss Lack of experience w/ concepts & switch / router configuration of QoS (telephones use auto VoIP ) Multicast (IGMP / RGMP / PIM, multicast router-port, flooding, well-known multicast addresses) PTP (general requirements, PTP-aware network equipment) IT & Operations staff need to work hand-in-hand!

44 AES TG SC M: AES67 Development Beyond?! Outlining AES67 compliance test guidelines Specifying and engineering the compliance tests Planning and organizing plug-fests Improving the standard specification where necessary Participants: anyone implementing AES67 parties / individuals with strong interest in AES67 interoperability

45 First AES67 plug-fest October IRT in Munich! 3.5 days of plugging 22 participants (10 manufacturers, IRT, EBU, SR) 16 products (15 were based on ) Lots of streams millions of packets!

46 First AES67 plug-fest October IRT in Munich! 3.5 days of plugging Tests included: 22 participants (10 manufacturers, IRT, EBU, SR) 16 products (15 were based on ) Lots of streams! Synchronization (PTP) Concurrent multicast streaming between all nodes w/ mandatory stream formats Unicast streams and SIP connection setup AES67 interoperability successfully demonstrated!

47 Second AES67 plug-fest November npr in Washington D.C. 3.5 days of plugging 11 manufacturers & IRT, EBU, SR, BBC, npr) 13 products (10 were based on ) Again - lots of streams and packets!

48 Lessons learned: Careful planning (IP address ranges, PTP setting) Multicast configuration (IGMP querier configuration) Improvements on SIP specifications req d Service advertising eases operation (stream connection) Further next plug-fests (3Q2016): More implementations Unicast / SIP Non-PTP-aware switches, more hops, routed network GM change

49 Beyond?! MNA Media Networking Alliance Non-profit organization to promote AES67 adoption Marketing work group - mainly covering marketing activities (web site, white papers, education, trade shows etc.) Intention to also work on technical issues (develop implementation guide lines & reference designs, establish test procedures organize plug-fests) technical work group Founding members: Bosch, Lawo, QSC, Telos, Yamaha > 30 members total (and growing), including broadcasters (BBC, SR, Walt Disney)

50 Contact information: Michael Mueller Vice President, Sales Lawo Inc. ALC NetworX GmbH Am Loferfeld Munich Germany