Schedule as of Oct 11, 2022 - subject to change

Default Time Zone is EDT - Eastern Daylight Time

Thursday, October 20 • 1:00pm - 1:20pm
AES67 WAN Transport Utilizing the Cloud

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This paper highlights the challenges with transporting AES67 through a public cloud infrastructure and how they can be solved along with topics for further study. This will be done through the lens of results from recent live demonstrations that prove it is feasible including one where audio was transported between North America and several locations in Europe. Along the way, the learnings as well as future considerations to enable the practical use of AES67 cloud transport in real-world applications will be reviewed.


Remote production is clearly a HOT topic today as companies around the world race to maintain their existing workflows with their talent dispersed in many off-site locations. Remote production is the new normal and - now that we have experienced its potential – is likely to continue to be a focus in the future. While many solutions have been hastily cobbled together, there is a need for higher quality productions with lower latency that integrate easily with existing equipment.

We started with a basic question: can we send RAVENNA/AES67 traffic over the public infrastructure and over long distances? Then we wondered would we be able to listen to something resembling audio? Would it be good quality? It is one thing for a single company with their own equipment to do it, but could we also interoperate with equipment from other companies? After all, this is the whole point behind AES67. Finally, we also wondered how we would do it and what challenges would we face.

Before digging into the setup and challenges that needed to be overcome, it is important to understand that AES67 and RAVENNA, even though they use IP, are designed to be used in local area networks (LANs). Despite this, AES67 and RAVENNA have been proven and are being used commercially in wide area network (WAN) applications across private networks, even though their use in WANs was never contemplated by the standards. It is important to note that private dedicated networks, whether ‘owned or leased’ are well-architected, have predictable behaviour, and come with performance guarantees. Public networks, on the other hand, are the equivalent of the ‘wild west’. Public networks suffer from packet loss due to link failures and have large, sometimes dramatic, latency due to packet re-transmissions. This makes the public environment very hostile for AES67!

There are three main challenges: latency and packet jitter; packet loss; timing and synchronization that will be reviewed along with the strategies used to overcome these. Along the way, the AES Standard Committee working group SC-02-12-M guidelines for AES67 over WAN applications will be highlighted.

A very ambitious proof-of-concept demo was undertaken which involved equipment from 3 companies (Ross, Merging and DirectOut) across 4 sites over two continents (North America and Europe) that leveraged the public cloud infrastructure from Amazon Web Services.

The paper will provide a detailed summary of the proof-of-concept architecture. The learnings and future considerations to enable the practical use of AES67 cloud transport in real-world applications will also be reviewed.

avatar for Bill Rounopoulos

Bill Rounopoulos

Bill Rounopoulos, Business Development Manager for OEM and Partnerships at Ross Video, is leading the company's effort to provide open solutions technology based on AES67, RAVENNA, and SMPTE ST 2110 to OEMs serving the broadcast and professional audio industry. Prior to Ross, Bill's... Read More →
avatar for Andreas Hildebrand

Andreas Hildebrand

RAVENNA Evangelist, ALC NetworX
Andreas Hildebrand is an Evangelist for the RAVENNA technology developed by ALC NetworX, Germany. His experience is based on more than 30 years of occupation within the Professional Audio / Broadcasting industry.He received a graduate diploma in computer science and worked as a software... Read More →

Thursday October 20, 2022 1:00pm - 1:20pm EDT