How to Migrate Your Live Broadcast Workflow to the Cloud

Flexibility

Aside from cost, the biggest advantage to broadcasters – and organizations in most industries – is flexibility:

• Cloud infrastructure allows organizations to scale up and down quickly, as needed, without purchasing emergency hardware or over-provisioning to handle occasional busy periods.
• Organizations can future-proof their business by adding new technologies offered by their cloud provider, such as machine learning modules. A customized multi-vendor approach allows broadcasters to swap out technologies or components as needed, and not become locked into a single vendor.
• Or they can experiment with new business models enabled by the cloud, such as subscription-based streaming services.
• Cloud also offers production flexibility through remote workflows no matter where a live event or the organization’s staff are located, or how and to whom the content will be distributed.
• Cloud storage also offers greater flexibility when delivering content to several different endpoints simultaneously and for enhancing the value and richness of content with AI-powered metadata.

Soper says broadcasters can enjoy this kind of flexibility without compromising on quality. “You can get the same creative content from the cloud that you would do on-prem,” he says. “You can build a deployment pipeline with a vision mixer with two mix effects buses, a character generator, or other processes. The vendors are available to deliver those products.”

On-prem setups, on the other hand, are far less scalable or flexible.

“When you go on prem, you’re making the largest of foundational footsteps in infrastructure – you’re saying ‘I will have this architecture for the next three, five, or 10 years,’” explains Tyrell Sales Director Dan Muchmore.

“But the problem with that is that if there are any changes to market requirements, you have to pivot around your technical choice. If there’s any change to your customer base or your business, you have to pivot around that technical choice,” he adds. “And those lumpy decisions become big, big burdens within the business.”

Efficiency and Speed

The flexibility mentioned above facilitates greater efficiencies by simplifying logistics, travel, and other issues that add complexity to live and other events. This speed helps broadcasters better capitalize on fast-moving live events, such as creating highlight packages during an ongoing broadcast.

Cloud workflows can also be configured to reside in the cloud, replicated, and set to not activate unless certain conditions are met via automation tools — a potentially significant efficiency gain over traditional workflows.

For live broadcasts, Soper says organizations can create replicable deployment pipelines that can be switched on with the push of a button just before the next live event.

Cloud platforms also offer sophisticated analytics tools to help broadcasters better understand their audience and tailor content to specific viewer groups.

Reliability

Reliability is arguably the most critical aspect of broadcasting: Disappointing viewers with broken feeds or other production issues can lead to a lack of trust.

Cloud provider service-level agreements (SLAs) generally offer minimal downtimeand faster time to recovery in case of an outage — whether caused by malware, ransomware, extreme weather, or other factors — through replication, backups, and other means.

Partnering with a cloud provider also means it’ll be their employees spending the most time on disaster recovery (DR), not your own.

Security

It’s widely acknowledged that unless you’ve got the money and time to build the Fort Knox of data centers, the cloud is a safer and more secure (when configured correctly) place to keep your data — especially when you use a well-known public cloud such as AWS or Google Cloud.

Cloud providers automatically update and patch their systems faster and more efficiently than any in-house team, while offering 24-7 protection via secure data centers, network segmentation, and automated protection against attempted incursions by bad actors.

Understanding Cloud-Based Broadcasting

These advantages signify the importance of cloud-based workflows for TV production going forward, with experts predicting that live and near-live sports, e-sports, entertainment, and enterprise applications will lead cloud adoption.

But what does cloud-based broadcasting look like right now?

Source: Seneca College

Cloud workflows are suitable for nearly every aspect of live production. This includes video editing, graphics and VFX, communications, and talkback. Live broadcasts via the cloud can accommodate dozens of cameras with all feeds ingested and switched in the cloud, reach more people through over-the-top (OTT) TV services, and support expanded functionality such as generating sports data feeds in close to real-time.

The latter is especially important for broadcasters trying to reach and engage new and younger audiences, explains Tyrell’s Muchmore.

“My kids watch live sport in a different way than I do – they’ve always got a device in their hand. Broadcasters need to engage with them on that device – but that tech is not a part of the traditional broadcasting infrastructure.”

Some of the main areas in which broadcasters have begun to implement cloud technologies include:

• Transcoding: Programmers and distributors increasingly use cloud-based software to convert file formats via transcoding, instead of more traditional hardware transcoders.
• Encoding: In the same vein, cloud-based encoding can convert broadcast signals into digital formats, instead of hardware encoders. Google points out that this workflow can particularly benefit broadcasters with several local station groups, since they can send signals to one cloud location instead of each group needing its own encoder.
• Automation: Advertisement signaling, dynamic ad insertion, messaging around breaks, and other workloads are often automated in the cloud.
• Storage and archive: Cloud platforms offer infinitely scalable storage, although cost can be an issue as more data is stored and archived. This is a fairly obvious one given cloud’s inroads in the data storage industry across virtually all industries.
• Stream packaging: The cloud can help prepare broadcast content for multi-screen delivery more efficiently, since the content lives closer to content delivery networks, which can reduce latency.
• Signal distribution: Broadcasters can send their signal to the cloud – where it’s encoded, packaged to partner specifications, and redistributed – instead of having to deliver directly to each TV distributor.

Amazon divides the cloud broadcast distribution chain into four main pieces:

1. Storage: Content stored in the cloud is instantly available for playout or transport. Broadcasters can use faster storage for content required in the short term and cold or archive storage (which is less expensive) for less frequently accessed video.
2. Transport: Depending on the distribution method, data and files must be transported to various partners and endpoints quickly and reliably.
3. Linear playout: The ordering of various files in the correct sequence to facilitate a linear channel. These files can include the TV program itself, advertisements, and internal promos.
4. Live streaming: Delivering live programming requires precise pacing, and the playout must decode the stream and send it to the linear system in real-time, which is more technically demanding than simple linear playout.

How to Approach Cloud Migration?

Thus far, many broadcasters’ jump to the cloud has been largely piecemeal. Many traditional broadcasters employ fine-tuned, highly technical on-prem processes honed over decades and are sometimes reluctant to forego that in favor of the (relative) unknown – an understandable position.

Tyrell’s Soper says an ongoing cloud skills shortage in the television industry certainly hasn’t helped speed up the relatively slow pace of change.

“The engineers that live and breathe television are very talented and are able to overcome most technical hurdles,” he explains. “But the cloud is a new landscape for them. Developing a pipeline for deployment of infrastructure as code is not something anybody would have done on-premises in a television environment.”

Muchmore agrees, adding that such internal resistance can sometimes boil down to protectiveness of well established workflows.

“If I’m an engineer that has spent 40 years honing my craft, my value is in delivering a project at the lowest cost by putting this kit in the rack and doing it on time,” he says. “In that case I’m not going to want to go to the cloud, because I can’t present my value back to the business.”

But as with most technology innovations, those who move to the cloud early will gain an inherent advantage over their on-prem rivals.

‘Lift-and-Shift’ vs. Cloud Native

The Society of Motion Picture and Television Engineers (SMPTE)’s Michael Goldman says most organizations currently take a “lift-and-shift” migration approach. “That means people are moving existing ground-based solutions into the cloud,” he explains in NAB Amplify, adding that this approach isn’t feasible in the long term.

“If you examine how a cloud-native service would be built, it would be radically different than the architectures you are seeing for these lift-and-shift kinds of things,” he says. “But they are starting to realize their limitations, and the industry is starting to understand it needs to adapt.”

Indeed, a lift-and-shift approach to migrating broadcast workflows to the cloud doesn’t make a lot of sense, according to TAG Video Systems’ Peter Whelan in this YouTube video. That’s because, he says, “the goal of cloud is to automate everything and make things as touchless as possible.

“So much of (broadcasting) is constrained by the limitations of technology we’ve used since the 1960s and 1970s,” he says. “Today’s production switcher just looks like a bigger version of a 1960s production switcher in some ways. And I think there’s room to really rethink how we get content from the cameras to the consumer.”

Source: Panasonic

He adds that re-engineering a playout workflow in the cloud, for example, can save 95% of the costs of a lift-and-shift approach.

To help facilitate this adaptation, organizations such as SMPTE formed a working group last year to “discuss challenges in the transition to the cloud” and develop best practices for migrating to and working in the cloud.

Focusing on the ‘Low-Hanging Fruit’

Both Muchmore and Soper agree that traditional broadcasters with established workflows typically try to initially move “low-hanging fruit” – such as their archive and backup functionality – to keep things simple and build their confidence operating in the cloud.

But Soper says that, over the past few years, broadcasting engineers have begun to come around to cloud-native workflows. “People are slowly learning the new techniques,” he says. “Some of these techniques have been standard in other industries for the past decade, but they’re new in the media sector.”

He adds that most broadcasters are open to altering their workflows for greater efficiency once they’ve made the jump. “And they can then scope in other areas of the business that can benefit from cloud workflows.”

Tackling Live Broadcasting in the Cloud

Achieving broadcast-quality video through the cloud is one of the most challenging elements of the cloud live broadcast workflow, mainly because it’s historically been difficult to replicate on-prem video latency and quality.

Source: IBM Video

But new technology such as real-time encoders, machine learning-based processing techniques, and cloud file transfer that can handle extremely heavy media files has helped organizations migrate live broadcast workflows to the cloud.

• Broadcasters can use tools such as AWS Connect live streaming to ingest real-time content, capture the stream, and distribute that content throughout production.
• Or they can take advantage of real-time transfer of heavy media files as they’re being recorded, such as MASV’s Growing Files feature.

Soper says one of the big challenges of live broadcasting in the cloud is getting enough on-site “first mile” bandwidth to move heavy files at speeds required for live broadcasting – a big reason bonded internet connections are so popular in a live workflow.

“Because you’ve got to factor in the downstream users – the recipients of those files,” he says, adding that a 50Mbps connection is relatively standard for most live sports and news broadcasts.

“Are the files going straight into a transcode process, hands off, to be delivered to a social media endpoint? Or is it going into an edit bay to be reused for a sports highlights package and a piece of premium content on a mainstream channel? It’s largely about understanding the user story of the media flow.”

According to TAG’s Whelan, the key to building high-performing live broadcast workflows is to build repeatable workflows in the cloud that can be snapshotted and deployed whenever you need them. At any rate, he says, it’s a much easier and less expensive approach than standing up an expensive production truck and running it for days on end.

Planning Your Cloud Migration: Things to Keep in Mind

There are several things broadcasters and live streamers must remember when migrating workflows from on-premises to the cloud. One of the most notable is whether to go with a major public cloud provider or build your own private cloud.

Some organizations don’t want to cede a foundational part of their infrastructure to a third party. Others prefer a hybrid cloud approach. But the comparative ease of implementing and using a public cloud compared to building and maintaining your own private cloud is so compelling that it’s the most common choice by far.

Soper says Tyrell prefers AWS because of its relatively long history working with media workflows and because it’s easier to find the skill sets required for AWS on the open market.

But no broadcaster is identical regarding legacy infrastructure, cloud maturity, target markets, and competitive advantages. That’s why no two cloud migrations are the same. Every broadcaster must assess their current setup and decide which workflows make the most sense to migrate.

Source: Medium

Tyrell’s Muchmore says newer companies sometimes have an advantage in this regard.

“A lot of companies who are new to media don’t have any infrastructure,” he explains, “so for them moving to cloud is nice and easy. But if you’re a more established business you’ve got more financial considerations, including the writedown of the CAPEX you made years prior.”

Here’s a list of things to keep in mind when pondering whether to move your workflow to the cloud:

1. Assess your current setup. Every company, in any business vertical, must first take stock of where they currently stand in terms of their technology stack and level of cloud maturity. This can provide valuable intelligence on what areas of your workflow stand to benefit most from a cloud migration in terms of efficiency, performance, and reliability.

It can also illustrate which parts of your workflow can be migrated to the cloud with the least disruption and most benefit.

1. Decide if migrating an element of your workflow makes sense. Migrating workflows to the cloud can be complex and shouldn’t happen because it seemslike the right idea. Evaluate the business case and operational benefits of migrating a specific component in terms of its impact on bitrate changes, rebuffer ratio, video startup times, and other key metrics.
2. Figure out how to monitor your new cloud-based workflow. Traditional broadcasters not in the cloud use hardware probes able to monitor signal strength, signal-to-noise (S/N) ratio, and any errors that crop up. Broadcasters must replace these hardware probes with software.

Once broadcasters have determined their level of cloud maturity and identified which areas to migrate to the cloud first, they can engage a cloud migration consultant such as Tyrell to help simplify the process.

Tyrell’s Muchmore says his company helps broadcasters take advantage of the cloud’s massive opportunity without them needing to learn a whole new suite of skills or spend hordes of cash hiring cloud engineers.