P4 is a powerful programming language which runs on network switches themselves allowing realtime manipulation of the data traffic. In broadcast, this can be used to alter SMPTE 2110 video in real time as demonstrated by Thomas Edwards at the EBU Network Technology Seminar year and that can be seen in this short video. “This shows how even on an ethernet switch now, we can program it to make these switching decisions based on any header [including] the application layer of the broadcast data”
This video explains what P4 is and how it works taking us all the way from the core principles to ways of programming it and harnessing its power. Watching the beginning of the video is sufficient for most in order to get a feel for P4 and how it could be (and is) applied to broadcast.
The speakers, from Cisco and Barefoot Networks (who work with Thomas Edwards from Fox), cove these topics:
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
If you were unable to make it to IBC this year, this RTS event that will bring you up to speed on the highlights of the Exhibition and the Conference.
The panel of experts will guide you through the through the most exciting exhibitors and give you an overview of the hottest sessions and timely topics featured in the Conference which this year had more than 400 Speakers over five days.
An in-depth talk explaining DOCSIS 3.1 from SCTE by Cisco’s Ron Hranac. DOCSIS 3.1 is the latest Data-Over-Cable Service Interface Specifications.
The presentation will include information on the following:
– Why DOCSIS 3.1?
– Basic principles of Orthogonal Frequency Division Multiplexing (OFDM).
– Spectrum allocation.
– FEC performance enhancements.
– New Proactive Network Maintenance (PNM) measurements.
CableLabs released version I01 of the new specification in late October 2013. DOCSIS 3.1 introduces a new physical layer, improved Forward Error Correction (FEC) and other features for high-speed data transmission on cable networks. Scalable to 10+ Gbps in the downstream and 1+ Gbps in the upstream, DOCSIS 3.1 supports services competitive with fibre to the home, but using cable’s HFC platform. Cisco’s Ron Hranac provides an overview of DOCSIS 3.1 from a physical layer perspective.
Date: Thursday, June 7
Time: 11:00 am ET, 16:00 BST
Using IP networks for real-time video is a powerful enabler. However, it comes with challenges.
How can we guarantee that IP networks provide the same level of reliability, performance and low latency as SDI operations?
Join IP experts James Stellpflug, VP Product Marketing at EVS, and Christophe Messa, Product Manager IP Solutions at EVS, along with our special guest Sunil Gudurvalmiki, Senior Product Manager at Cisco, for a bleeding edge look at how facilities can fully empower an IP infrastructure that goes beyond point-to-point topologies while delivering the required level of speed, reliability and performance for live productions.