You searched for PTP – Page 21 of 25 – The Broadcast Knowledge

Video: Scalable IP Architectures for Live Production and Playout

Posted on 29th March 2019 by Russell Trafford-Jones

For many building a good network for a 2110 or other media-over-IP standards is new and a bit scary. But if there’s one person who knows how to do it, it’s Arista’s Gerard Phillips who’s here to go through the basics and build up the network needed for a large and scalable network.

Scalability is the heart of this, because life does change – your company grows, technology pushes you from SD to HD to UHD etc. So you need to build scalability in from the beginning. Getting this right comes down to choosing the right hardware and having the right architecture.

Gerard looks at switch architecture and bandwidth both in the switch and of the network cables. He then looks towards ‘hub and spoke’ Vs monolithic switch design. What are the pros and cons to each and which is right for you?

SDN – Software Defined Networking – is also a key ingredient in such a network. This is where the routing decisions of the switch infrastructure is taken out of the switches because they have automatic and blinkered algorithms and takes it to a server which has a complete overview of the whole system. For a broadcaster who deals with critical signal chains – this is usually the best approach to give determinism and safety to the network.

PTP – Precision Time Protocol – provides the foundation of the 2110 standard and is therefore very important to studio installations being used to replace black and burst. What are the best ways to distribute this and how can you deal with redundancy?

These topics and more are all covered at this IP Showcase presentation from IBC 2018.

Watch now!

Speaker

Gerard Phillips
Systems Engineer,
Arista Networks

Video: Beyond SMPTE Time Code – the TLX Project

Posted on 27th March 2019 by Russell Trafford-Jones

SMPTE Time Code started off in the 1970s and has evolved yet in some ways remained unchanged. It is key to electronic video editing, and has found application in many other fields and industries including live events. This is Armin Van Buren explaining how he uses SMPTE timecode in his live DJ sets.

The more we push technology, the more we demand form timecode, so now there is the TLX project (Time Label, eXtensible) which seeks to define a new labelling system.

The webinar will provide an overview of the emerging design, and is intended to provide a preview for potential users, and to encourage participation by those with expertise to offer.

Peter Symes, the host, covers:

The history of timing
What SMPTE ST 12 is and its evolution
The concept of TLX
Use of PTP & provision for extensibility
What types of data can TLX convey
Q&A!

Watch now to hone your knowledge of the SMPTE timecode that already exists and to get ready to understand TLX.

Speakers

	Peter Symes Consultant, SMPTE Fellow
	Joel E. Welch Director of Education, SMPTE

Webinar: Network Timing in an IP Infrastructure

Posted on 19th February 2019 by Russell Trafford-Jones

Time: 08:00 & 16:00 GMT, 20th February 2019

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.

Register now!

Speaker

Peter Schut
CTO
Axon

Video: AES67 Open Media Standard for Pro-Audio Networks

Posted on 18th February 2019 by Russell Trafford-Jones

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.