Video: TV Sport Innovation – Staying Ahead of the Game

Sports has always led innovation in many areas of broadcast, but during COVID not only did they have to adapt nearly every workflow and redeploy staff, but they then had to brace to deliver 100 games in 40 days. Gordon Roxburgh sums it up: “I’ve been at Sky twenty years, and I think [these have] been the most challenging six months…we’ve faced.”

In this session from the DTG’s Future Vision 2020 conference, Carl Hibbert from Futuresource Consulting talks to Sky, Arsenal TV and Facebook to find how their businesses have adapted. Melissa Lawton from Facebook explains how their live streaming, both for user-generated footage and produced sport have adapted to the changing needs. When COVID hit, Facebook lost some very valuable content. Their response was to double down on fan engagement, with challenges to fans to create content and also staging events which were produced and commentated as real sports events, but all shots were people at home exercising but being brought into the narrative of an Iron Man competition. Facebook have also invested in their user-facing tools and dashboards to help expose and monitor contribution via live streaming.

Gordon Roxburgh from Sky explains the seachange he’s seen in production. “The first thing was to keep channels on air…and keep staff safe.” They moved rapidly from a fully staffed office to just three or four people on-site and a presenter. In order to mix, they created a Virtual Production suite which allowed people to create content in the cloud.

For content, Gordon says that watch-alongs proved very popular where key sports personalities talk through what they were thinking during key sporting moments. This was just one of the many content ideas that keep programming going until “Project restart” commenced where the whole sports ecosystem asked itself ‘How can we deliver 100 games in 40 days?’ Once they knew the season would start, Gordon says, this opened up a 3-week build period during which BT Media and Broadcast, NEP, NEP Connect and multiple internal departments collaborated to produce rapid turnarounds.

“As an industry, we came together.” The working practices developed at Sky were shared with other major broadcasters who also shared their best practice – always putting staff first. Sky even went to the extent of building a technical space in a large studio floor to keep people apart and co-opted a set of training rooms to become a self-contained graphics unit. These ideas kept graphics operators together but not mixing with the rest of the production.

The view from Arsenal TV is explained by John Dollin. They worked quickly very early on and were able to be back in the office from February. Whilst Arsenal TV doesn’t have the rights to stream live, they produce their programmes live for transmission later. This used to be done in a crowded room but was soon transferred to a virtual mixer in the cloud with remote editors. John highlights the challenge of involving freelancers into the system and providing them with appropriate supervision. More importantly, he feels that their current ability to maintain the pre-covid production quality is due to the continued dedication of certain personnel who are putting in long hours which is not a sustainable situation to be in.

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Speakers

Gordon Roxburgh Gordon Roxburgh
Technical Manager,
Sky Sports
Melissa Lawton Melissa Lawton
Live Sports Production Strategy,
Facebook
John Dollin John Dollin
Senior Product & Engineering Manager,
Arsenal Footballl Club
Carl Hibbert Carl Hibbert
Head of Consumer Media & Technology,
Futuresource Consulting

Video: Delivering Quality Video Over IP with RIST

RIST continues to gain traction as a way to deliver video reliably over the internet. Reliable Internet Stream Transport continues to find uses both as part of the on-air signal chain and to enable broadcast workflows by ensuring that any packet loss is mitigated before a decoder gets around to decoding the stream.

In this video, AWS Elemental’s David Griggs explains why AWS use RIST and how RIST works. Introduced by LearnIPvideo.com’s Will Simpson who is also the co-chair of the RIST Activity Group at the VSF. Wes starts off by explaining the difference between consumer and business use-cases for video streaming against broadcast workflows. Two of the pertinent differences being one-directional video and needing a fixed delay. David explains that one motivator of broadcasters looking to the internet is the need to replace C-Band satellite links.

RIST’s original goals were to deliver video reliably over the internet but to ensure interoperability between vendors which has been missing to date in the purest sense of the word. Along with this, RIST also aimed to have a low, deterministic latency which is vital to make most broadcast workflows practical. RIST was also designed to be agnostic to the carrier type being internet, satellite or cellular.

Wes outlines how important it is to compensate for packet loss showing that even for what might seem low packet loss situations, you’ll still observe a glitch on the audio or video every twenty minutes. But RIST is more than just a way of ensuring your video/audio arrives without gaps, it. can also support other control signals such as PTZ for cameras, intercom feeds, ad insertion such as SCTE 35, subtitling and timecode. This is one strength which makes RIST ideal for broadcast over using, say RTMP for delivering a live stream.

Wes covers the main and simple profile which are also explained in more detail in this video from SMPTE and this article. One way in which RIST is different from other technologies is GRE tunnelling which allows the carriage of any data type alongside RIST and also allows bundling of RIST streams down a single connecting. This provides a great amount of flexibility to support new workflows as they arise.

David closes the video by explaining why RIST is important to AWS. It allows for a single protocol to support media transfers to, from and within the AWS network. Also important, David explains, is RIST’s standards-based approach. RIST is created out of many standards and RFC with very little bespoke technology. Moreover, the RIST specification is being formally created by the VSF and many VSF specifications have gone on to be standardised by bodies such as SMPTE, ST 2110 being a good example. AWS offer RIST simple profile within MediaConnect with plans to implement the main profile in the near future.

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Speakers

David Griggs David Griggs
Senior Product Manager, Media Services,
AWS Elemental
Wes Simpson Wes Simpson
RIST AG Co-Chair,
President & Founder, LearnIPvideo.com

Video: IP Media Networks for Live Production

Building and controlling a network for SMPTE ST 2110 go hand in hand when it comes to planning an installation. As ST 2110 delivers all media essences separately, networks can easily end up carrying tens of thousands of flows emphasising the need for efficient network design and having a full understanding of the paths your media are using.

This video is co-presented by Nevion and Arista and starts by observing that the traditional difference between a LAN and WAN is being eroded leading as WANs get faster and better, we find that we can now deliver multi-location broadcast facilities which act similarly to if everything was co-located. Moreover, introduces Martin Walbum Media Function virtualisation which is enabled by network-connected equipment allowing for shared processing and shared control. For instance, it’s now possible to house all equipment in a datacentre and allow this to be used remotely maximising the utilisation of the equipment allowing a broadcaster to maximise the value of its purchases and minimise costs.

Arista’s Gerard Phillips takes a look at SDI systems to understand how we expect IP systems to behave and what we expect them to do. The system needs to deliver high throughput, instantaneous switching with low latency and no tolerance for failure. In order to do this, not only do we need to get the right software but to deliver the resilience we need, the network needs the correct architecture. Gerard takes us through the different options starting with a typical, flat, layer 2 networks and working up to leaf and spine along with a treatment of red, blue and purple networks.

Gerard recently did a deep dive on network design for live production for the IET. Take a look for much more detail on how to architect a network for uncompressed media.

Martin then looks at the need for orchestration. Broadcasters expect to deliver systems with, preferably, no downtime. As such, we’ve seen that network elements are typically duplicated as is the traffic which is delivered over two paths and SMPTE ST 2022-7. If you want to take something out of use for planned maintenance, it’s best to do that in a planned, ordered, way meaning you migrate flows away from it until it’s no longer in-circuit. Software-Defined Networks (SDNs), do exactly that. Martin walks us through the pros and cons of managing your network with IGMP and SDN. Gerard’s previous talk also looks at this in detail.

The video finishes with a look at which Arista switches can be used for media and a look at how Arista and Nevion implemented an ST 2110 network at Swiss broadcaster, tpc. This case study is presented in longer form in this video from the IP Showcase.

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Speakers

Gerard Phillips Gerard Phillips
Systems Engineer,
Arista
Martin Walbum Martin Walbum
Senior Vice President of Solution Strategy,
Nevion

Video: Layer 4 in the CDN

Caching is a critical element of the streaming video delivery infrastructure, but with the proliferation of streaming services, managing caching is complex and problematic. Open Caching is an initiative by the Streaming Video Alliance to bring this under control allowing ISPs and service providers a standard way to operate.

By caching objects as close to the viewer as possible, you can reduce round-trip times which helps reduce latency and can improve playback but, more importantly, moving the point at which content is distributed closer to the customer allows you to reduce your bandwidth costs, and create a more efficient delivery chain.

This video sees Disney Streaming Services, ViaSat and Stackpath discussing Open Caching with Jason Thibeault, Executive Director of the Streaming Video Alliance. Eric Klein from Disney explains that one driver for Open Caching is from content producers which find it hard to scale, to deliver content in a consistent manner across many different networks. Standardising the interfaces will help remove this barrier of scale. Alongside a drive from content producers, are the needs of the network operators who are interested in moving caching on to their network which reduces the back and forth traffic and can help cope with peaks.

Dan Newman from Viasat builds on these points looking at the edge storage project. This is a project to move caching to the edge of the networks which is an extension of the original open caching concept. The idea stretches to putting caching directly into the home. One use of this, he explains, can be used to cache UHD content which otherwise would be too big to be downloaded down lower bandwidth links.

Josh Chesarek from StackPath says that their interest in being involved in the Open Caching initiative is to get consistency and interoperability between CDNs. The Open Caching group is looking at creating these standard APIs for capacity, configuration etc. Also, Eric underlines the interest in interoperability by the close work they are doing with the IETF to find better standards on which to base their work.

Looking at the test results, the average bitrate increases by 10% when using open caching, but also a 20-40% improvement in connection use rebuffer ratio which shows viewers are seeing an improved experience. Viasat have used multicast ABR plus open caching. This shows there’s certainly promise behind the work that’s ongoing. The panel finishes by looking towards what’s next in terms of the project and CDN optimisation.

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Speakers

Eric Klein Eric Klein
Director, CDN Technology,
Disney+
Dan Newman Dan Newman
Product Manager,
Viasat
Josh Chesarek Josh Chesarek
VP, Sales Engineering & Support
Stackpath.com
Jason Thibeault Jason Thibeault
Executive Director, Streaming Video Alliance