Video: Real World IP – PTP

PTP, Precision Time Protocol, underpins the recent uncompressed video and audio over IP standards. It takes over the role of facility-wide synchronisation from black and burst signals. So it’s no surprise that The Broadcast Bridge invited Meinberg to speak at their ‘Real World IP’ event exploring all aspects of video over IP.

David Boldt, head of software engineering at Meinberg, explains how you can accurately transmit time over a network. He summarises the way that PTP accounts for the time taken for messages to move from A to B. David covers different types of clock explaining the often-heard terms ‘boundary clock’ and ‘transparent clock’ exploring their pros and cons.

Unlike black and burst which is a distributed signal, PTP is a system with bi-directional communication which makes redundancy all the more critical and, in some ways, complicated. David talks about different ways to attack the main/reserve problem.

PTP is a cross-industry standard which needs to be interpreted by devices to map the PTP time into an understanding of how the signal should look in order for everything to be in time. SMPTE 2059 does this task which David cover.

PTP-over-WAN: David looks at a case study of delivering PTP over a WAN. Commonly assumed not practical by many, David shows how this ways done without using a GPS antenna at the destination. To finish off the talk, there’s a teaser of the new features coming up in the backwards-compatible PTP Version 2.1 before a Q&A.

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Speakers

Daniel Boldt

Daniel Boldt
Head of Software Engineering
Meinberg

Meeting: IP in Broadcast


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…
5pm Registration.
5.30pm Presentation begins.
8pm Drinks and networking.

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