AES67 is a method of sending audio over IP which was standardised by the Audio Engineering Society as a way of sending uncompressed video over networks between equipment. It’s become widespread and is part of SMPTE’s professional essences-over-IP standards suite, ST 2110.
Here, Conrad Bebbington gives us an introduction to AES67 explaining why AES67 exists and what it tries to achieve. Conrad then goes on to look at interoperability with other competing standards like Dante. After going into some implementation details, importantly, the video then looks the ‘Session Description Protocol’, SDP, and ‘Session Initialisation Protocol’, SIP which are important parts of how AES67 works.
Other topics covered are:
Packetisation – how much audio is in a packet, number of channels etc.
Synchronisation – using PTP
What are SDP and SIP and how are they used
Use of IGMP multicast
Implementation availability in open source software
We’re all starting to get the hang of the basics: that PTP is the new Black and Burst, that we still need sync to make studios work and that PTP (IEEE1588) is standardised under ST 2059 for use in the broadcast industry. So given its importance, how can we make it redundant?
Thomas Kernen from Mellanox and Chair within the STMPE standards community takes about his real-lift work on implementing PTP with an eye on redundancy methods
Andy Rayner from Nevion looks at using SMPTE ST 2110 on a Wide Area Network (WAN).
While using ST 2110 is a much discussed topic in the studio or within a building, there are extra difficulties in putting it between buildings, cities and countries with some saying it shouldn’t even be done. Here, Andy examines how you can do it whilst acknowledging the industry still has some decisions to make.
John Mailhot from Imagine Communications discusses what ‘Full Stack’ means for video over IP. The SMPTE 2110 suite of standards is mainly about the transport of essences – but how to you simply plug in some equipment and get going? You need standards which discover and register the new device, you need timing to synchronise devices. It’s a whole ecosystem.
John walks us through the data flows (and workflows) necessary when you plug new 2110 kit in and we quickly discover there is more depth than we imagined.
John also discusses how DHCP can give you more than just IP addresses.
Covering IS-04, IS-05, PTP/SMPTE 2059, ST 2110 and IEE 802.1AB (LLDP). This is a very practical video. Why? Because understanding all this is key to diagnosis and troubleshooting.
Paul Briscoe explains PTP from the basics taking us through the reasons for using it and how it’s applied to the ST 2110 which to carries uncompressed video, audio and metadata.
The ST 2110 standard brings with it an entirely new way to establish system timing, through use of IEEE-1588 PTP and SMPTE ST2059. This method is native to the IP domain and to the RTP transport and media synchronization used by 2110 but also provides virtualized legacy timing capability.
• The considerations in system timing using ST2110, including those which include SDI elements.
• How PTP delivers precision time across an IP network
• How ST2059 uses PTP to virtualize any reference signal.
• The synchronization mechanisms of ST2110 including transport timestamps and media clocks
• How streams are synchronized among each other and how they interoperate with PTP
• How timing of SDI and AES3 signals is harmonized with ST2110 streams.
• Router switchpoint timing and latency considerations.
Presented By: Paul Briscoe at SMPTE Technical Conference 2017 Watch now!
Setting up a PTP Network shouldn’t be difficult! Learn from the experts who have seen it all and know the tricks to keep you out of trouble and your IP network system perfectly timed. This webinar will discuss basic synchronization requirements and how PTP can serve them, provide a high-level view of how to clear PTP obstacles in media applications, and then launch into some monitoring and diagnosis best practices. Come, learn, and ask your toughest questions!
SVP and Product Manager
for Networked Audio & Video Solutions
Erling Hedkvist is Senior Vice President and Business Development Manager at Lawo. Mr Hedkvist has been in the broadcast industry since 2000 and started his career in product management before making the move over to sales, business development and corporate management. Mr Hedkvist specialized early on in providing networking solutions for the broadcast and media & entertainment industry. Initially for contribution applications but lately with a focus on providing software defined networking solutions for live production workflows. As such he works with clients to design complete solutions for Remote Production, Master Control, Playout, PCR, OTT and other broadcast applications on top of IP and in a distributed and virtualized environment.
Andreas Hildebrand is acting as Evangelist for the RAVENNA technology developed by ALC NetworX, Germany. His experience is based on more than 25 years of occupation in the Professional Audio / Broadcasting industry. He received a graduate diploma in computer science and worked as a software engineer and Head of Development for companies in Germany and the US for several years. He is a full-time participant in the AES Task Group defining and maintaining the AES67 AoIP standard. He is also participating in the AIMS Technical WG and the SMPTE ST2110 SVIP standardization.
Mike Overton is a Principal Engineer at Tektronix. He has been a HW designer and project lead on SDI, MPEG, audio, signal generation, picture quality, and IP products. For the last 3 years, Mike has concentrated on IP-based systems, encompassing both the PTP reference and the ST2110 essence aspects. He led the definition and development of the SPG8000A PTP master and contributed to the definition and testing of the Prism IP monitor. He is the focal point for many POCs and recently helped define and execute the SMPTE-sponsored interoperability tests for PTP.
Philip Schofield, MD of Crystal Vision and Richard Lawrence the Principal Software Engineer, talk about implementing ST 2110 highlighting how to deal with some of the challenges of putting together a live media IP installation, including network security, firewalls, compatibility between equipment suppliers and new methods of monitoring and synchronisation.
In a SMPTE UK Section meeting held at Crystal Vision, this talk looks at the reasons not to move to IP and the reasons why it makes sense and demonstrates a small IP system, at work. And covers:
This Webinar provides an introduction to the Live IP Software Toolkit (LIST), and how and what to use it for.
Shining a light on media streams.
IP-based networks make for powerful production infrastructures because they are content-agnostic, scalable, and, in principle, flexible.
Understanding what is going on in your Live IP infrastructure is important. Are your senders transmitting according to the specifications? Does your PTP timing reference perform within proper limits? Without new tools, administrators are blind to such factors. That is where LIST comes in.
The Live IP Software Toolkit allows administrators to inspect production network traffic and visualize streams. It is closely aligned with SMPTE 2110 and related standards. LIST is currently a minimum viable product and open source.
April 18th, 08:00 and 16:00 BST
In the second in the series, Axon’s Jan Evaleens discusses in detail the relevant standards for video and audio transport and how they relate to each other. He will also touch upon the latest IP developments presented during NAB2018.
Axon, working closely with early adopters of IP production workflows, has experienced first-hand the many challenges of making the transition from SDI and we are keen to share the lessons we have learnt with you. In our Broadcast IP 101 series, our team will be providing useful advice and resources to help you prepare to move to and navigate an IP environment, with vital insight from real-world examples. Over the coming weeks, we will explore topics including: traffic shaping, timing, audio, transport formats and network management.
Meeting: 17th Jan 2018 | 17:00 | 8 Golden Square, Soho W1F 9HY
An exclusive presentation and demonstration to help you get to grips with Precision Time Protocol (PTP) and IP workflows from Daniel Boldt (Head of Software Development, Meinberg) and Nikolaus Kerö (General Manager, Oregano Systems).
If you’re thinking about upgrading to an all-IP studio workflow, traditional synchronisation techniques like black burst and tri-level sync will have to be replaced with a packet-based method in order to make best use of the new single, shared medium. PTP is ideally suited to this, and the SMPTE 2059 standard has helped define and tailor PTP to the needs of the broadcasting industry.
Of course, planning, configuration and continuous monitoring are essential for every studio’s mission critical applications, especially if you’re upgrading to an IP-based infrastructure. As part of an in-depth presentation around PTP and IP workflow, Daniel and Nikolaus will be discussing their experiences of working with the new technologies, and comparing different PTP-enabled topologies. They’ll also provide a real-world demonstration of IP-based applications to showcase the performance of PTP under varying network conditions, and highlight its pitfalls, which could affect availability and accuracy further down the line. As standard, there’ll be drinks so you can network and discuss all the evening’s topics with everyone afterwards.
What to expect…
5.30pm Presentation begins.
8pm Drinks and networking.