Delivering great quality, live video without breaking the bank is difficult. This talk looks at the different ways companies are dealing with this challenge.
NGCodec’s founder, Oliver Gunasekara, starts by quantifying the millions of dollars spent just by one company each year just on delivering their video and introduces the difficulties of CPU encoding compared to dedicated chips – ASICS and looks at how FPGAs fit in. Cloud-based FPGAs are available on AWS, Baidu, Alibaba and others.
After covering Twitch’s move to VP9 on FPGA, the talk finishes looking at on-premise implementation, Oliver looks at the cost of ownership of servers compared to Xilinx FPGA.
How can we make video more appealing to humans? We’ve evolved to live a certain way and this has defined – and will continue to define – our video technologies. MUX founder Jon Dahl talks to us here about the ways in which human physiology drives viewing habits.
Vertical vs. horizontal video, angular resolution and how the typical viewing distances of computers, TVs and other devices affects what resolution we can perceive are all discussed. Jon moves on to frequencies both of audio and video where frame rates and flicker are important and where physics comes into play alongside biology.
Even for the experienced, this talk is bound to bring something new and is a great tour of the fundamentals of the visual perception that our industry relies on and strives to please day in, day out.
This talk was given at Streaming Tech Sweden which is an annual conference from Eyvinn Technology. Streamed on their own video platform, talks are initially available exclusively to all conference attendees, but are released free-to-view during the subsequent year. Free registration is required to watch the videos.
Netflix has famously moved in to original content but less-known are its innovations behind the scenes in production workflows.
Eric Reinecke looks at the challenges in moving media and finding ways to correctly pick and choose the right media to move. He looks at the different ways of moving editorial data: the venerable EDL, Avid’s more recent AAF and Final Cut’s XML talking about the pros and cons of them all.
The talk then moves on to OpenTimelineIO which is an API and interchange format for editorial cut information which was designed to help departments in animation studios to work together. Hosted by Pixar, companies like Netflix are finding uses for the API outside of animation and Eric shows demos of how he’s using it within Netflix then ends with a call to get involved!
Everyone has a go-to program or three they use for problem solving. Here is a review of a whole swathe of diagnosis programs out there for live streaming.
There are known favourites like Wireshark, FFPlay and MediaInfo, free applications such as Eyevinn Technology’s Segment Analyser and the open source YUView. And this also covers paid programs like Elecard’s Stream Analyser and Telestream Switch.
This talk by David Hassoun CEO of RealEyes media is well worth a look because there is bound to be something there you didn’t know about – and who knows how useful that will be to you!
There continues to be fervent activity in codec development and it’s widely expected that there won’t be a single successor to AVC (h.264). Vying for one of the spots is AV1 but also MPEG’s VVC.
In this talk at SMPTE 2018, Julien Le Tanou from MediaKind compares the coding tools used by VVC and AV1 and explains the methodology he uses to compare the two codecs. We see the increase in decoding time compared to HEVC required for VVC as well as the famously slow AV1. We also see the bitrate savings with VVC performing better.
Julien also presents subjective results which are not correlated to the objective results and explains reasons for this.
Networking in the cloud, by rights, should be the same in your office but with it’s a lot easier when you’re led through it. From subnets to VPN’s, this talk from AWS makes sure you can get your VPC (Virtual Private Cloud) talking to other parts of your cloud infrastructure and your office.
Starting with the basics and building up, Perry and Tom take us through the IP address allocation, address choices, firewall configuration, security configuration and then on to Direct Connect, VPNs sharing VPC resources and much more.
From the AWS Summit 2019, this is a great talk for those who know networking well and are new to AWS, as well as those who are comfortable with AWS names, but are a little rusty on the finer points of networking.
Manipulating the manifest of streamed video allows localisation of adverts with the option of per-client customisation. This results in better monetisation but also a better way to deal with blackouts and other regulatory or legal restrictions.
Using the fact that most streamed video is delivered by using a playlist which is simply a text file which lists the locations of the many files which contain the video, we see that you could deliver different playlists to clients in different locations – detected via geolocating the IP address. Similarly different ads can be delivered depending on the type of client requesting – phone, tablet, computer etc.
Here, Imagine’s Yuval Fisher starts by reminding us how online streaming typically works using HLS as an example. He then leads us through the possibilities of manifest manipulation. One interesting idea is using this to remove hardware delivering cost savings using the same infrastructure to deliver to both the internet and broadcast. Yuval finshes up with a list of “Dos and Don’ts” to explain the best way to achieve the playlist manipulation.
Sarah Foss rounds off the presentation explaining how manifest manipulation sits at the centre of the rest of the ad-delivery system.
Server-Side Ad Insertion (SSAI) it’s the best defence against ad-blockers, but switching in an ad at source can be tricky particularly in low latency streams. This talk at the OTT Leadership Summit at Streaming Media East brings together leaders in the field to explain where they’re up to in delivering this technology and the benefits they see.
Magnus Svensson tells us about the instrumental role Eyevinn Technology, the consultancy who run the technical conference Streaming Tech Sweden , is played in Sweden creating an open standard for all the broadcasters to work to in order to agree how to track SSAI allowing the correct payments to be made. Magnus also talks about aligning SCTE insertion with MPEG structure and the importance of correct preparation of the source video.
Tony Brown from Newsy talks about the centralised nature of SSAI making management easier and gives ana overview of decisioning bringing together buys and sellers of ads. Tony also discusses other analytics such as adjacency and targeting.
Jason Justman of Sinclair Broadcasting Group, explains SCTE insertion and talks about the technical difficulties in reacting to live changes in programming.
Geir Magnusson, Jr. from fuboTV covers the difficulties of preparing the ads quickly enough for thousands or millions of streams to get customised, SSAI ads at the same time and discusses his strategy to start pre-fetching ads from the ad server to prepare them ahead of time. Geir also highlights the misunderstanding that can exist where streaming provides the same video and programme experience as traditional broadcast but ad buyers don’t all understand how much more targeting is possible – even with SSAI.
Delivering an all-IP truck is no mean feat. tpc explains what they learnt, what went well and how they succeeded in delivering a truck which takes no longer to fire up than a traditional SDI truck.
A common questions among people considering a move to IP is ‘do I need to?’ and ‘how can I get ready?’. Here at The Broadcast Knowledge we always say ‘find a small project, get it working, learn what goes wrong and then plan the one you really wanted to do.’ The Swiss broadcasting service provider ‘Technology and Production Centre’, known as ‘tpc’, has done just that.
tpc is currently working on the Metechno project – a large all-IP news, sports and technology center for Swiss radio and television. In order to acquire necessary experience with the SMPTE ST 2110 standard, tpc designed the UHD1 OB van ahead of time which has been used in TV production for 6 months now. In this video, Andreas Lattmann shares the vision of the Metechno Project and, critically, his experiences related to the design and use of the truck.
The UHD1 is a 24-camera OB van with all IP core based on Arista switches with non-blocking architecture. It is the equivalent of an 184-square UHD SDI system however, it can be expanded by adding additional line cards to network switches. The truck is format agnostic, supporting both HD and UHD formats in HDR and SDR. IP gateways are incorporated for SDI equipment.
The SMPTE ST 2110 specification separates video and audio into discrete essence streams which boosts efficiency and flexibility, but we hear in this talk that more attention to latency (lip sync) is required compared to SDI systems. Andreas talks about the flexibility this truck provides with up-/down-conversion, color-correction for any video plus how IP has enabled full flexibility in what can be routed to the multiviewer screens.
Anderas spends some time discussing redundancy and how IP enables full redundancy – an improvement over many SDI infrastructures and how SMPTE’s ST 2022-7 standard makes this possible.
The main GUI is based on a Lawo VSM control system which aims to deliver a familiar experience for operators who used to work in the SDI domain. Network training has been provided for all operators because troubleshooting has changed significantly with the introduction of essences over IP. This is not least because NMOS IS-04 and 05 standards were not mature enough during design of the truck, so all IP connections had to be managed manually. With more than 50 thousand IP addresses in this system, AMWA’s NMOS IS-04 which manages discovery and registration and IS-05 which manages the setup and take-down of connections would have helped significantly in the lean management of the truck.
Lattmann emphasizes importance of using open standards like SMPTE ST 2110 instead of proprietary solutions. That allows you to choose the best components and not rely on a single manufacturer.
The learning’s the Andreas presents us involve difficulties with PTP, IP training, the benefits of flexibility. From a video point of view, Andreas presents his experiences with HDR->SDR workflows, focussing in HDR and UHD.