Video: HLS js Past, Present and Future


HLS.js is a video player for playing HLS in browsers. Playback of Apple’s HLS, and more recently Low Latency HLS was implemented natively in Safari. HLS.js brings the same playback experience of HLS into other browsers. Created in 2015 by Guillaume du Pontavice, HLS.js uses Media Source Extensions to enable the HTMLMediaElement to play media streams from javascript.

In this talk from Seattle Video Tech, HLS.js maintaner Rob Walch talks us through HLS.js from 2015 to today and touches on future capabilities. Rob takes us through some analytics comparing HLS.js performance against playback with the native player in a range of browsers and shows better bitrate stability. The player today is built on the work under Guillaume but also John Bartos, the previous maintainer who also worked on the LHLS protocol which, while useful, was ultimately sidelined by Apple when they launched ‘Low Latency HLS‘. Needless to say that HLS.js is the result of many contributors.

 

 

Rob takes us through his demo page which has a lot of analysis tools showing the current and next chunks, playback timelines, real-time metrics, details on audio tracks, live stats for Apple LL-HLS and much more. The session concludes with questions about how browser agnostic HLS.js is, its support for DRM including on streams with ads in the clear and encyrpted content, support for SSAI discontinuities and testing.

Watch now!
Read the talk notes

Speakers

Rob Walch Rob Walch
Principal Engineer, Video PLayer
JW Player

Video: Digital Storage During a Pandemic for Media and Entertainment

The pandemic has had two effects on storage demand. By reducing the amount of new content created, it lessened demand in the short term, but in driving people to move to remote workflows the forecast for storage demand has increased significantly. This SMPTE San Francisco section meeting explores all aspects of demand from on-site, cloud and the mix between HDDs, solid-state and even persistent memory.

Tom Coughlin’s talk starts 16 minutes into this video looking at demand for storage requirements globally which we see are 50-100% higher in 2020 when we saw demand peak at 79 Exabytes of storage compared to 2019. Tom outlines, next, the features of storage technologies ranging from hard drives through SAS, NVMe up to memory channel leading to two graphics which help show how the faster memory costs more per gigabyte and how storage capacity increases, unfortunately, as access speed decreases. As such, Tom concludes, bulk storage is still dominated by hard drives which are still advancing with HDD capacities of 50TB being forecast for 2026.

Tom talks about NVMe-based storage being the future and discusses chips as small as 16mmx20mm. Not only that but he discusses how NVMe-over-fabric where NVMe as a protocol can be used in a networking context to allow low-latency access to storage over network interfaces, whether ethernet, Infiniband or others.

 

 

The next innovation discussed is the merging of computation. with storage. In order to keep computational speeds increasing, and in part to address power concerns, there has been an increase recently in creating task-specific chips to offload important tasks from CPUs since CPUs are not increasing in raw processing power at the rate they used to. This has been part of the reason that ‘Computational Storage’ has been born with FPGAs on the storage available to do specific processing on data before it’s handed off the computer. Tom takes us through the meanings of a Computational Storage Drive, Processor and Computational Storage arrays.

The next topic for Tom is the drivers behind increased storage requirements in broadcast for the future. We’re already moving to UHD with a view to onboarding 8K. Tom points out a 16K proof of concept showing there’s a lot of scope for higher bitrate feeds. Average shot ratios remain high, partly because of reality TV, but whatever the reason, this drives storage need. However, a bigger factor is the number of cameras. With multi-camera video, 3D video, free-viewpoint video (where a stadium is covered in cameras allowing you to choose (and interpolate) your own shot, as well as volumetric video which can easily get to 17Gb/s, there are so many reasons for storage demands to increase.

Tom talks about the motivations for cloud storage and the use cases for which moving to the cloud works. For instance, often it’s for data that will only ever need to go to the cloud i.e. for delivery to the consumer. Cloud rendering is another popular upload-heavy use for the cloud as well as keeping disaster recovery copies of data. Cloud workflows have become popular for dealing with peaks. Generally known as hybrid operating, this allows most processing to be done on-premise with lower latency and flat costs. When the facility needs more than it can provide, this can ‘burst’ up to the cloud.

The talk concludes with a look at storage share both for the tape market and the HDD/solid-state market leading on to an extensive Q&A and discussion including input from MovieLabs’ Jim Hellman

Watch now!
Speaker

Thomas Coughlin Tom Coughlin
President,
Coughlin Associates

Video: Football Production Technology: The Verdict


Football coverage of the main game is always advancing, but this year there have been big changes in production as well as the continued drive to bring second screens mainstream. This conversation covers the state of the art of football production bringing together Mark Dennis of Sunset+Vine, Emili Planas from Mediapro and Tim Achberger from Sportcast in a conversation moderated by Sky Germany’s Alessandro Reitano for the SVG Europ Football Summit 2021.

The first topic discussed is the use of automation to drive highlights packages. Mark from S+V feels that for the tier 1 shows they do, human curation is still better but recognises that the creation of secondary and tertiary video from the event could benefit from AI packages. In fact, Mediapro is doing just this providing a file-based clips package while the match is ongoing. This helps broadcasters use clips quicker and also avoids post-match linear playouts. Tim suggests that AI has a role to play when dealing with 26 cameras and orchestrating the inputs and outputs of social media clips as well as providing specialised feeds. Sportcast are also using file delivery to facilitate secondary video streams during the match.

 

 

Answering the question “What’s missing from the industry?”, Mark asks if they can get more data and then asks how can they show all data. His point is that there are still many opportunities to use data, like BT Sport’s current ability to show the speed of players. He feels this works best on the second screen, but also sees a place for increasing data available to fans in the stadium. Emili wants better data-driven content creation tools and ways to identify which data is relevant. Time agrees that data is important and, in common with Emili, says that the data feeds provide the basis of a lot of the AI workflows’ ability to classify and understand clips. He sees this as an important part of filtering through the 26 cameras to find the ones people actually want to see.

Alessandro explains he feels that focus is moving from the main 90 minutes to the surrounding storylines. Not in a way that detracts from the main game, but in a way that shows production is taking seriously the pre and post stories and harnessing technology to exploit the many avenues available to tell the stories and show footage that otherwise would have space to be seen.

The discussion turns to drones and other special camera systems asking how they fit in. Tim says that dromes have been seen as a good way to differentiate your product and without Covid restrictions, could be further exploited. Tim feels that special cameras should be used more in post and secondary footage wondering if there could be two world feeds, one which has a more traditional ‘Camera 1’ approach and another which much more progressively includes a lot of newer camera types. Emili follows on by talking bout Mediapro’s ‘Cinecam’ which uses a Sony Venice camera to switch between normal Steadicam footage during the match to a shallow depth-of-field DSLR style post-match which give the celebrations a different, more cinematic look with the focus leading the viewer to the action.

The panel finishes by discussing the role of 5G. Emili sees it as a benefit to production and a way to increase consumer viewing time. He sees opportunities for 5G to replace satellite and help move production into the cloud for tier 2 and 3 sports. Viewers at home may be able to watch matches in better quality and in stadiums the plans are to offer data-enriched services to fans so the can analyse what’s going on and have a better experience than at home. Mark at S+V sees network slicing as the key technology giving production the confidence that they will have the bandwidth they need on the day. 5G will reduce costs and he’s hoping he may be able to enhance remote production for staff at home whose internet isn’t great quality bringing more control and assuredness into their connectivity.

Watch now!
Speakers

Tim Achberger Tim Achberge
Sportcast,
Head of Innovation & Technology
Emili Planas Emili Planas
CTO and Operations Manager
Mediapro
Mark Dennis Mark Dennis
Director of Technical Operations
Sunset+Vine
Alessandro Reitano Moderator: Alessandro Reitano
SVP of Sports Production,
Sky Germany

Video: Broadcasters OTT D2C strategies

New streaming services are still coming online in Europe and elsewhere some with ads, some subscription based. But this isn’t just a story of new players trying to disrupt the market, broadcasters are continuing to enter, renter and innovate in this same space. So what are they up to and how are they holding their own against the international names?

Jörn Krieger moderates this panel from Nextv Series Europe first asking Swiss broadcaster SRG SSR’s Pierre-Adrian Irlé about the public broadcaster’s new offering, Play Suisse. Pierre explains that Switzerland is surrounded by big markets providing content in three out of Switzerland’s four languages. So it’s actually local content which is the core asset that SRG SSR has since the Netflixes of the world have yet to invest in any Swiss content. This led the Play Suisse team to build a digital platform from the ground up, separate from their linear workflows and tools so that they adapt their service to being online and deliver the service and quality customers expect based on their experience with the international services.

 

 

Ricardo Tomé from Portugal’s Media Capital Digital says that Portugal has good cable penetration and most customers are already used to being able to rewatch the last 7 days’ content. Their proposition is split between the national Portuguese market and the international market made of Portuguese speakers abroad. Ricardo agrees that it doesn’t matter if you are public or private, having your own content is very important. International Portuguese are happy to pay, but nationally telcos are giving away subscriptions to Amazon Prime etc. which reduces their appetite to pay for streaming services.

Jörn turns the conversation to strategies to attract viewers and whether priority is given to the younger demographic. Pierre explains they very much want to reach their existing audience but know that there is a share of the audience that have lost, or who never had, a relationship with a broadcaster. With the launch of Play Suisse, they are getting emails from young licence-fee payers who say they are finally able to get something for their money. For Arturo Garijo from Spanish commercial broadcaster Atresmedia, the question is less about demographics themselves, but more about the appetite for paying for content in the Spanish market. There are a lot of people who are not used to paying meaning their business model had to be about the volume of people watching adverts. However, with streaming, they are now able to attract viewers who are interested in pay to avoid adverts. They have a lot of traditional viewers, so they have a big funnel of potential customers against whom they are developing differently priced ways of accessing their services to maximise take up.

Ricardo points out that having a subscription service that captures people with big productions is all very well, but there is also a lot of work to do to market differently via social media and word of mouth. Another difference in being online, particularly for public broadcasters are rules dictating what you can and can’t do. Play Suisse, for example, is not allowed to run advertising online and can’t bring things online more than 24 hours before linear. So the business model adapts around these rules, for instance by offering binge watching of a new series in the 24 hours before the linear release which as a more traditional two-a-week airing schedule.

Jörn moves to discussing content and viewer retention as the panel comes to a close. Ricardo says that you need to carefully consider how much you spend on original content. You can’t predict the upside of new content, but it needs to be good, long-lived content so it can be reused for broadcast after being online. This means being willing to pay for good writers and directors. Arturo points out that you can’t simply rely on exclusive content because your churn will be high and so will the cost. You can retain people if you have a deep catalogue for them to continue to explore after they’ve seen the content that attracted them in the first place. Pierre agrees that curating the content is a good way to retain customers which they do by finding different ways to curate and unearth older content. A great example of curating older content, and showing that it’s not simply a question of putting old episodes online, is that Media Capital Digital has been re-editing novellas/soap operas from 300 episodes down to 80. This gives them the opportunity to freshen up the feel of the show and make the episode lengths and formats more conducive to binge watching.

Watch now!
Speakers

Ricardo Tomé Pierre-Adrian Irlé
Project Lead, Play Suisse,
SRG SSR – Swiss Radio and Television
Arturo Larrainzar Arturo Larrainzar Garijo
Strategy Director,
Atresmedia
Ricardo Tomé
Head of Digital,
Media Capital Digital
Jörn Krieger Moderator: Jörn Krieger
Freelance Journalist