VMAF is a video quality metric created by Netflix which allows computers to indicate what quality a video is. This is an important part of evaluating how good your encoder or streaming service is so it’s no surprise that Netflix has invested years of research into this. Other metrics such as PSNR and MS-SSIM all have their problems – and let’s accept that no metric is perfect – but what the industry has long grappled with is that a video that has a strong fidelity to the source doesn’t necessarily look better than one that less-faithfully replicates the source.
Imagine you had a video of an overcast day and one encoder rendered the video a bit brighter and a bit more blue. Well, for that clip, people watching might prefer that encoder even though the video is quite different from the source. The same is true of noisy pictures where replicating the noise isn’t always the best idea as some people, for some content, would prefer the cleaner look even though some details may have been lost.
As such, metrics have evolved from PSNR which is much more about fidelity to metrics which try harder to model what ‘looks good’ and VMAF is an example of that.
Zhi Li explains the history of VMAF and explains some of the new features which were released in August 2018, when this talk was given, which gives an insight into the way VMAF works. Plus, there’s a look ahead at new features on the road map. This talk was given at a SF Video Technology meet up.
Thursday February 7th, 10am PST / 1pm EST / 18:00 GMT Now available on-demand!
There is so much talk about HDR, wide colour gamut (WCG), ‘Better Pixels’ and all the TVs seem to interpolate motion up to 100Hz or above, that it’s good to stop and check we know why all of this matters – and crucially when it doesn’t.
SMPTE’s new ‘Essential Technology Concepts Webcasts’ are here to help and for the first webcast, David Long will look at the fundamentals of colour, contrast and motion in terms of what we actually see.
This promises to be a great talk and, the chances are, even people who ‘know it already’ will be reminded of a thing or two!
Ooyala heroically compile a report and webinar discussing the state of the media and broadcast industry each year and Jim O’Neill is here to talk us through it for 2019. The report itself discusses penetration of 4K screens, the demographics of online streaming, 5G, ATSC and much more and this webinar looks at:
The surge of major streaming services into the market
The multi-billion dollar expansion of original content creation
The acceleration of M&E and M&A activity as broadcasters look to build content empires
Limelight, Streaming Video Alliance and Videonet come together to discuss the introduction of WebRTC’s sub-second latency for live streaming which is opening the way for a ‘better-than-broadcast’ experience – enabling new ways to engage viewers and monetise them.
WebRTC provides real-time video delivery and can now be implemented in a CDN environment for large-scale distribution and has extremely low latency.
This webinar covers:
Making WebRTC part of your workflow
Compression, DRM & ad insertion
Innovation opportunities for broadcasters and challenger OTT providers
Special focus on increasing viewer engagement
creating new revenue streams.
New business partnerships
Optimisation for multiscreen television & connected TV devices
Date: Tuesday Jan 29th, 2018 11am PT / 2pm ET / 19:00 GMT
In this webinar Limelight discuss some of the challenges with delivering low latency video and take a deeper dive to look at what causes latency, the WebRTC protocol and how Limelight Networks delivers real-time streaming at global scale.
Topics that will be discussed during this webinar include:
Challenges delivering low-latency video
Various approaches for reducing latency (small chunk HLS, peer-to-peer, WebRTC)
Encoding and codecs
Stream access and security
How to implement interactivity into live streaming video
Technical Product Marketing Manager
Esports continues to be on the rise and is being picked up by ‘traditional’ broadcasters like ESPN. These broadcasters may well play a role in diversifying the sport beyond the predominantly young male audience which would benefit the sport and the viewer alike. Esports has also gained a place in the 2022 Asian Games alongside more usual sports like badminton, cycling and Judo.
Here on the site we featured, last year, this look behind the scenes in the transmission gallery at an esports event clearly showing that they are making TV just like anyone else. As we wrote at the time
“Esports is gaining more and more mindshare of broadcast-focused companies – and for good reason. As you watch event the setup, you’ll see why Presteigne sponsor the UK eSports awards. As you watch their gallery and spot familiarly-shaped equipment, you’ll see why the industry is increasingly taking note.” Check it out.
Here, some of the industry’s leading participants explain how esports is transforming live content and reaching new audiences as it crosses into the mainstream and catches the attention of the biggest media businesses.
In this webinar you’ll learn about:
• How esports is outgrowing traditional sports, reaching a global audience of 590 million by 2020, more than half of millennials
• The growing value of esports media rights and the opportunities for broadcasts and content platforms
• The esports ecosystem of teams, events, leagues, games publishers and platforms
• The role of live production technology to produce esports events for a huge international audience
Date: January 17th 2019
Time: 10am PT / 1 PM ET / 18:00 GMT
For many content providers and rights-holders, live streaming represents an exciting opportunity to connect directly with their target audiences plus drive new revenue streams.
This webinar discusses topics including the pros and cons of live streaming as compared with broadcasting, how to measure quality of experience and reliability, which business models are being used, current best practices, ongoing challenges, critical initiatives, and much more.
Join Alec Hendry, Senior Director of Technology Convergence for Viacom, Will Richmond, Editor and Publisher at VideoNuze, and Henrik Eriksson, Service Line Manager at Akamai, for a roundtable discussion covering:
The state of live streaming today
How to measure quality in live streaming and ensure a positive user experience
Successful business models for live streaming
Best practices associated with live streaming
Senior Director of Technology Convergence,
When? 10th Jan 2019. 1:00 PM EST / 10:00 AM PST / 18:00 GMT
TR 1001-1 from the JT-NM (Joint Task Force on Networked Media) gives guidance on protocols, configuration and architectures to use when setting up large ST-2110 systems.
John Mailhot and Brad Gilmer, both well trusted industry figures who are in the thick of creating and testing ST-2110 and the surrounding specifications, will lead us through what it is, what it tells us and, ultimately, how we can best go about creating a large ST 2110 system.