Video: AES67 Open Media Standard for Pro-Audio Networks

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

Watch now!

For a more in-depth look at AES67, watch this video

Speakers

Conrad Bebbington Conrad Bebbington
Software Engineer,
Cisco

On-Demand Webinar: Human Perception Fundamentals – Colour, Contrast & Motion


Thursday February 7th, 10am PST / 1pm EST / 18:00 GMT
Now available on-demand!

There is so much talk about HDR, wide colour gamut (WCG), ‘Better Pixels’ and all the TVs seem to interpolate motion up to 100Hz or above, that it’s good to stop and check we know why all of this matters – and crucially when it doesn’t.

SMPTE’s new ‘Essential Technology Concepts Webcasts’ are here to help and for the first webcast, David Long will look at the fundamentals of colour, contrast and motion in terms of what we actually see.

This promises to be a great talk and, the chances are, even people who ‘know it already’ will be reminded of a thing or two!

Watch now.

Speakers

David Long David Long
Director
RIT Center for Media, Arts, Games, Interaction & Creativity
& MAGIC Spell Studios

Video: IP For Media Webcast Part II

Following on from last week’s post part II is here. Wes Simpson looks at use of IP in Remote Production/Remote Integration (REMI) and finished with a panel discussion including Newtek and Grass Valley, a Belden brand.

This video talks about:

  • Why Broadcasters need networking?
  • Typical Live remote sports broadcast roles
  • Overview of video & audio Signal types
  • HDR & Wide Colour Gamut (WCG)
  • Data (metadata, scripts etc)
  • REMI – Remote Integration, AKA ‘Remote Production’ in Europe.
  • Overview of what tasks can be done at base, what still needs to be done ‘on-site’
  • Uncompressed formats summary (SDI, 2022-6, 2110)
  • Slice-based compression
  • Mezzanine compression
  • TR-01 for carrying JPEG 2000 & audio
  • Bonded Cellular
  • Packetloss & FEC (Forward Error Correction)
  • 2022-7 – route diversity
  • Typical delays
  • Plus a panel discussion

 
Watch now!

Speakers

Wes Simpson Wes Simpson
President,
Telecom Product Consulting
Tom Butts Tom Butts
Content Director,
TV Technology
1

Video: IP for Media Webcast Part I

TV Technology talks to Wes Simpson to find out build up full view of IP from the basics of ‘why are we moving to IP’ up to thoughts on network architecture and cloud infrastructure.

This is the first of two videos and will leave you with a broad understanding of the basics of how IP is used and implemented in broadcast covering audio and compressed and uncompressed video.

Wes’s extensive topic list:

  • Why people are moving to IP
  • Applications for IP Video
  • Pros and cons
  • Standards available
  • New workflows available
  • Mixing IP and SDI
  • OTT delivery, ATSC 3.0 delivery
  • Network basics & architectures
  • Multicast
  • Timing and Synchronisation (PTP)
  • Cloud concepts
  • CDNs
  • Ad Insertion

 
Watch now!

 

Speakers

Wes Simpson Wes Simpson
President,
Telecom Product Consulting
Tom Butts Tom Butts
Content Director,
TV Technology

[Video]: Video Compression 101

Jigsaw24’s Chief Engineer, Phil Crawley, explains video codecs from the fundamentals up. Codecs touch every part of the broadcast chain and are a vital part of the industry as much as of day to day life. So it’s worth brushing up or learning the basics to help you to fully understand what’s happening with today’s codecs, whether that be HEVC, AV1, JPEG XS or trusty MPEG4.

Phil covers:

  • Compressed and Uncompressed video & codecs
  • DCT Principles
  • Intra/Inter-frame compression
  • Acquisition Vs Editing Vs. Transmission codecs
  • Measuring compression effects
  • Codecs Vs File Formats & wrappers
  • Compression concatenation
  • MPEG4, H.264(AVC) & H.265(HEVC)

Watch now!

Want to take things further? Check out Harmonic’s Next-Gen Compression Techniques

Speaker

Phil Crawley Phil Crawley
Chief Engineer,
Jigsaw24

Video: Uncompressed IP Video Basics

Top training here from Ed Calverly on the basics needed to understand uncompressed video. Presented at the IBC 2018 IP Showcase courtesy of the VSF.

Ed delves just far enough into the detail to tease out the important points of video over IP:

  • The need for timing
  • The legacy of blanking
  • Carrying data (VANC, HANC, Embedded audio etc.)
  • Benefits of splitting essences
  • TCP Vs UDP
  • Subnets and Routing
  • Multicast (i.e. IGMPv2 & v3)
  • PTP & SMPTE 2059
  • 2022-6, 2110, NMOS
  • Traffic Shaping: Narrow & Wide senders

Watch now!

Speaker


Ed Calverly
Ed Calverly
Professional Trainer for the Broadcast Industry,
Freelance

Meeting: Video Compression Fundamentals Tech Breakfast


11th July 2018, 09:00 BST
Location: Jigsaw24, 8 Golden Square, Soho, London, W1F 9HY

The Tech Breakfast at Jigsaw24 continue this time with a look at video compression fundamentals. Codecs are a vital part of the industry and almost part of day to day life, so the experts from root6, Phil Crawley and Matt Ward, will help you get a grasp of the basics and understand what’s happening with today’s codecs, be that HEVC, AV1 or trusty MPEG4. All this, plus a pastry and a drink!

Sound good? Then register now!

Video: A Jaunt Through Colour Technology In Video


In this talk, Color Me Intrigued, given at Demuxed 2017, Vittorio Giovara, Senior Video Encoding Engineer at Vimeo, sheds light on colorspaces – what they are, how and why they work, why we should care about handling edge cases properly. Starting with historical design choices, venturing through current standards such as BT.709, and arriving at modern times with High Dynamic Range, the focus will be on practical applications on the web and in broadcast.

A great primer for those who need it, and great revision for the rest!

Watch now

Video: AES67 and Audio Networking in IT-based Studios


On-demand Talk: 69 Minutes
Mark Yonge, AES Standards Manager, takes us on the journey of how AES67 came into being. This talk from 2015, builds on the clear indications that IP was the way forward up the technologies underpinning the standard and the implications for us on the new ways of working.

In a recorded talk at an AES UK Section meeting, Mark talks about delays, PTP, multichannel audio and much more.

Watch!