Trends in IP based broadcast


Glodina Lostanlen TV-Bay Magazine
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The momentum behind moving media operations to IP-based environments is unstoppable and to stay ahead of the competition these days, companies need to be migrating operations away from rigid, single-purpose components and towards software-based common computing resources.

The good news is a well-architected IP-based production facility is now able to provide the same robustness, reliability and performance as traditional SDI-based infrastructures. Broadcasters can now transition operations to an IT-based infrastructure without compromising current benchmarks for quality, performance or reliability.

The flexibility and economic benefits associated with leveraging the cost, performance advantages and economies of scale of the multi-trillion dollar IT ecosystem are too compelling and attractive to ignore. Still, a fair degree of scepticism remains. Some media professionals still harbour concerns about replacing SDI-based infrastructure with commercial off-the-shelf (COTS) computing and networking platforms of the IT industry.

Following a decade of false starts and broken promises about the ability of IP to handle live production operations, broadcast engineers justifiably fear that the production and delivery of high-quality video may remain beyond the capabilities of 'best-effort' networks and the comparatively modest performance and reliability standards of the IT domain.

In addition to non-technical implications, such as lack of skill and diluted job descriptions, they fear that what are now increasingly rare glitches in the SDI realm, such as lip sync issues and other timing mismatches between video and audio essences - or even catastrophic failures - will again become commonplace in an IP-based environment.

While it's understandably hard to let go of SDI-based broadcast equipment and purpose-built infrastructure, which has delivered rock-solid reliability and precision timing for more than two decades, significant progress has been made in the past couple of years to address the technology shortcomings of IT-based infrastructure for the production and delivery of media.

The reliability of IP, for example, is no longer an issue. In addition, IP-based networks can also be architected to meet the stringent technical requirements of high-quality video, including low latency, precision timing and synchronization. Despite the connectionless nature of IP, latency is essentially a non-issue for today's Ethernet switches. Delays are nearly infinitesimal, enabling media organisations to move video great distances and through multiple processing cycles without introducing quality-robbing delays. In addition, broadcast professionals are able to employ a variety of traffic engineering and timing mechanisms that shrink latency and jitter even further and well within the acceptable range for the production of high-quality video.

An IP-based environment also brings advantages in terms of control and security. Much of the success of transitioning media operations to an IP-based environment, as well as a hybrid facility constructed of both SDI- and IP-based equipment, is dependent on the imposition of a control system that defines policies for the routing of media signals across the underlying transport infrastructure.

Advantages of a software-defined routing control layer that is agnostic to the underlying transport layer include the fact that such an approach overrides all of the code and features built into COTS IP equipment, many of which are not applicable to the broadcast domain. Policies and parameters, such as routing paths and quality of service, are dictated exclusively by an intelligent routing control system that is able to fully exploit the speed and raw power of a datacentre environment.

In addition, the importance of standards that attract a broad industry consensus and lead to widespread interoperability in any technology sector is impossible to overestimate. A major contribution to SDI's long-term success has been its plug-and-play nature and the confidence that all products based on SDI from virtually all vendors will interoperate.

That is why Imagine Communications, through its work with AIMS, the Alliance for IP Media Solutions, is helping to set the roadmap for adoption of open standards in IP connectivity. The goal in setting up AIMS was to take the standards already available, work done by great bodies like SMPTE, AMWA, VSF and EBU, and get people using them.

AIMS published its roadmap that sets out an open, collaborative way in which IP connectivity can be implemented in all areas of broadcasting, including live production. It is the only set of IP standards in the industry that has been developed using a collaborative, non-proprietary approach. As a result, it has the support of more organisations than any other - over 50 vendors large and small to date, along with a whole host of other bodies - and most importantly, the standards that AIMS is promoting are available now. Even though the SMPTE 2110 specification is currently in draft, it is composed of standards that are currently in use in live settings, eliminating the need for vendors and media companies to delay implementation of solutions using those standards.

During IBC 2016, AIMS worked with exhibition organisers to create a new feature in the exhibition, the IP Interoperability Zone. This saw more than 30 separate companies in one area, across dozens of applications, demonstrating real, practical, working standards-based interoperability.

Unless the same level of confidence that media companies currently have in SDI interoperability exists in the IP realm, a swift and orderly transition to a more versatile and flexible environment is impossible. Without assurances of widespread interoperability, broadcasters and other media companies are prone to postpone critical investments in technology, sitting on the sidelines until they know for sure that the new infrastructures and workflows they are constructing today will not need to be demolished if a change in direction - or technology suppliers - is required in the future.

Finally, broadcast professionals are also dealing with concerns around the fragmentation of the supply chain. In an SDI-only world, most media companies are able to contract with a few or even a single technology supplier. The transition of operations to an IT-infrastructure invites an entirely new field of suppliers and technology partners into the media space. Even though many of the suppliers of IT-based equipment are among the largest companies in the world, they are largely unknown as critical suppliers of broadcast technology. To mitigate these concerns, some broadcast technology leaders have forged close ties to leading IT companies, assimilating the expertise to assist media companies in the design, operation and maintenance of IP-based video production plants.

It's safe to say that media companies today are building out IP-based greenfield installations that meet and conceivably exceed a traditional broadcast plant in terms of agility and cost efficiency, without compromising performance. However, very few media companies are yet positioned to make wholesale moves to IP, which means more are following a hybrid transition path that allows for the graceful migration to an all-IP plant.


Tags: iss120 | ip broadcast | imagine | cots | SMPTE | AMWA | VSF | EBU | Glodina Lostanlen
Submitted by Glodina Lostanlen Read this article in the tv-bay digital magazine
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Reunion on Kingsman ensures efficient workflow for sequel
KitPlus Both on and off camera, there are some collaborations that are built to last. Armed with the success of their work on the first film adaptation of the Kingsman comic book (Kingsman: The Secret Service), director Matthew Vaughan reunited with cinematographer George Richmond, DIT Joshua Callis-Smith and colorist Rob Pizzey, to deliver Kingsman: The Golden Circle, the upcoming second installment in the spy comedy series.
Tags: iss128 | kingsman | blackmagic | goldcrest | davinci | arri | dit | KitPlus
Submitted by KitPlus Read this article in the tv-bay digital magazine
When a lens is more than just a lens
KitPlus Matching shots between different cameras can be tricky at the best of times. But how do you match lens characteristics between a live action shoot and a CGI composition? The CP.3 XD lenses from Zeiss offer an efficient solution to this with their frame accurate meta-data.
Tags: iss128 | zeiss | lenses | lens | prime | cp.3 | cgi | vfx | KitPlus
Submitted by KitPlus Read this article in the tv-bay digital magazine
How the Cloud can be enabled as traditional broadcast workflows evolve
David Schleifer The Cloud itself is fairly simple, but for broadcasters it can be difficult to leverage. It isnt technically complex but broadcast still overlaps requirements that need real time, high resolution and quick turnaround solutions. Plus, this is coupled with the need to connect with dispersed geographic locations, reduce costs and access multi-format assets. As a result, broadcasters have moved away from asking the basic question what can I do in the cloud? to trialling projects and implementations are now underway or under evaluation.
Tags: iss128 | ott | primestream | David Schleifer
Submitted by David Schleifer Read this article in the tv-bay digital magazine
IP Prompting
Jon Hilton# The potential nirvana of interoperable IT, Telecommunications and Broadcast convergent technology definitely felt a lot closer at this years IBC with the launch of many, many broadcast IP ready devices, workflow and solutions. While the big ticket camera and live production infrastructures dominated the headlines there were a number of smaller but equally important IP workflows that were launched which are fundamental to successful, professional TV production and this includes the often forgotten world of TV Prompting
Tags: iss128 | portaprompt | ip | prompting | ippg | windigi | Jon Hilton#
Submitted by Jon Hilton# Read this article in the tv-bay digital magazine
Leveraging licensed broadcast spectrum assets
John Payne There are several different approaches to transmitting live and file-based content from the field to the studio. Traditional microwave Electronic News Gathering (ENG) provides high bandwidth, high-quality transmission with low latency. Using the secure, dedicated BAS spectrum keeps control in a broadcasters hands. The past few years have seen a shift in video technology toward acceptance, and adoption of IP-based links into ENG workflows.
Tags: iss128 | eng | bas | imt | vislink | imt-vislink | John Payne
Submitted by John Payne Read this article in the tv-bay digital magazine