With the SMPTE 2110 suite of standards largely published and the related AMWA IS-04 and -05 specifications stable, people’s minds are turning to how to implement all these standards bringing them together into a complete working system.
The JT-NM TR-1001-1 is a technical recommendation document which describes a way of documenting how the system will work – for instance how do new devices on the network start up? How do they know what PTP domain is in use on the network?
John Mailhot starts by giving an overview of the standards and documents available, showing which ones are published and which are still in progress. He then looks at each of them in turn to summarise its use on the network and how it fits in to the system as a whole.
Once the groundwork is laid, we see how the JT-NM working group have looked at 5 major behaviours and what they have recommended for making them work in a scalable way. These cover things like DNS discovery, automated multicast address allocation and other considerations.
Well ahead of video, audio moved to uncompressed over IP and has been reaping the benefits ever since. With more mature workflows and, as has always been the case, a much higher quantity of feeds than video traditionally has, the solutions have a higher maturity.
Anthony from Ward-Beck Systems talks about the advantages of audio IP and the things which weren’t possible before. In a very accessible talk, you’ll hear as much about soup cans as you will about the more technical aspects, like SDP.
Whilst uncompressed audio over IP started a while ago, it doesn’t mean that it’s not still being developed – in fact it’s the interface with the video world where a lot of the focus is now with SMPTE 2110-30 and -31 determining how audio can flow alongside video and other essences. As has been seen in other talks here on The Broadcast Knowledge there’s a fair bit to know.(Here’s a full list.
To simplify this, Anthony, who is also the Vice Chair of AES Toronto, describes the work the AES is doing to certify equipment as AES 67 ‘compatible’ – and what that would actually mean.
This talk finishes with a walk-through of a real world OB deployment of AES 67 which included the simple touches as using google docs for sharing links as well as more technical techniques such as virtual sound card.
Packed full of easy-to-understand insights which are useful even to those who live for video, this IP Showcase talk is worth a look.
There are a lot of videos looking into the details of uncompressed video over IP, but not many for those still starting out – and let’s face it, there are a lot of people who are only just embarking on this journey. Here, Andy Jones takes us through the real basics do prove very useful as a building block for understanding today’s IP technologies.
Andy Jones is well known by many broadcast engineers in the UK having spent many many years working in The BBC’s Training and Development department and subsequently running training for the IABM. The news that he passed away on Saturday is very saddening and I’m posting this video in recognition of the immense amount he has contributed to the industry through his years of tireless work. You can see from this video from NAB 2018 his passion, energy and ability to make complicated things simple.
In this talk, Andy looks at the different layers that networks operate on, including the physical layer i.e. the cables. This is because the different ways in which traffic gets from A to B in networking are interdependent and need to be considered as such. He looks at an example network which shows all the different standards in use in an IP network and talks about their relevance.
Andy briefly looks at IP addresses and the protocol that makes them work. This underpins much of what happens on most networks before looking at the Real-time Transport Protocol (RTP) which is heavily used for sending audio and video streams.
After looking at how timing is done in IP (as opposed to black and burst) he has laid enough foundations to look at SMPTE ST 2110 – the suite of standards which show how different media (essences) are sent in networks delivering uncompressed streams. AES67 for the audio is also looked at before how to control the whole kit and caboodle.
Peter Schut is back in the sixth webinar in Axon’s Broadcast IP 101 series, this time examining timing, namely PTP, for professional essence-over-IP systems such as based on SMPTE ST 2110.
Timing needs to be rock solid in studio settings where many signals are mixed together, so your PTP system needs to be too. SMPTE 2059-2 standardises the use of PTP timecode (IEEE 1588) in broadcast. It’s important to understand how master clocks and slave clocks work, plus there is talk of ‘transparent’ and ‘boundary’ clocks in switches. Getting the architecture right is key remembering that one important different between IP timekeeping and black and burst time keeping is that the communication is two-way.
Peter gives us the benefit of his experience and insight into getting timing right in two sessions, one morning, one evening.
A meeting of experienced minds here at the Pittsburgh SMPTE section talking about the opportunities and challenges of ST-2110. Phil Myers from Lawo talks optimistically about the challenges that can and often have been solved in implementing 2110 whether that be network infrastructure or timing, giving a good primer on the whole topic as he starts the session.
Hugo Gaggioni from Sony, talks about NMOS, explaining what AMWA does and the difference between their IS-04,05 and 06 specifications.
Karl Kuhn from Tektronix then discusses packet pacing, PTP and network architectures. He then looks at how to monitor PTP and see it is working well.
With the panel session at the end, joined by Dan Turk from NEP, there is a free-ranging discussion covering some of the following topics:
Control of IP networks
The limits of IP
True non-blocking switches
Break-even points of IP systems
Split essences & dropping blanking
Network planning for UHD
Handling loss of network on PTP implementations
plus much more!
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
In a continuing series of videos which dig deeper than just saying ‘hooray, IP is great’, we look at the onerous task of actually planning and deploying a whole building’s worth of 2110. From the IPShowcase at IBC 2018, Ultich Voigt from Qvest Media explains how they helped Swiss public broadcaster SRG/SSR to build their new facility – the TPC Sports, News & Technology centre.
Ulrich looks at how functions can be centralised and/or consolidated and whilst he talks of the technology standards in use, the highlight here are the workflows achieved.
Aims of the project
Technical Goals and Standards
How they got experience in using IP ahead of the project
Testing planning & issues rectification
Deciding whether to go ‘Full IP’ and what that means
When? 10th Jan 2019. 1:00 PM EST / 10:00 AM PST / 18:00 GMT
TR 1001-1 from the JT-NM (Joint Task Force on Networked Media) gives guidance on protocols, configuration and architectures to use when setting up large ST-2110 systems.
John Mailhot and Brad Gilmer, both well trusted industry figures who are in the thick of creating and testing ST-2110 and the surrounding specifications, will lead us through what it is, what it tells us and, ultimately, how we can best go about creating a large ST 2110 system.
At the IBC 2018 IP Showcase, Andreas Hildebrand explains how AES67 and 2110 work together and how technologies like Dante, RAVENNA and Livewire fit in.
While there are lots of resources for working with 2110 video, but this is one of the few which tackles Audio. Andreas covers one of the ‘gotchas’ in 2110 – the compatability requirements for AES within the standard. He then looks at the timing requirements of 2110 and how they differ to those of AES67 and finally discusses AES3 while explaining the ST 2110-31 standard.
Senior Product Manager and Evangelist for the RAVENNA technology developed by ALC NetworX, Germany,
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.