Video: Colour

With the advent of digital video, the people in the middle of the broadcast chain have little do to with colour for the most part. Yet those in post production, acquisition and decoding/display are finding it life more and more difficult as we continue to expand colour gamut and deliver on new displays.

Google’s Steven Robertson takes us comprehensively though the challenges of colour from the fundamentals of sight to the intricacies of dealing with REC 601, 709, BT 2020, HDR, YUV transforms and all the mistakes people make in between.

An approachable talk which gives a great overview, raises good points and goes into detail where necessary.

An interesting point of view is that colour subsampling should die. After all, we’re now at a point where we could feed an encoded with 4:4:4 video and get it to compress the colour channels more than the luminance channel. Steven says that this would generate more accurate colour than by stripping it of a fixed amount of data like 4:2:2 subsampling does.

Given at Brightcove HQ as part of the San Francisco Video Tech meet-ups.

Watch now!

Speaker

Steven Robertson Steven Robertson
Software Engineer,
Google

Video: SNMP is Dead

SNMP has long been widely used in the broadcast industry and is a great example of the industry using a technology which is there but has never quite satisfied all the needs not least security. Here, Rob Shakir and Carl Lebsack from Google explain their dissatisfaction with SNMP and tell of the system, gRPC, Google has written and implemented in response to stream telemetry at a high frequency. As larger facilities move to uncompressed essences over IP, this should solve a number of issues for the broadcast industry.

This talk given at NANOG 73 covers:

  • SNMP inefficiencies
  • The requirement for time-accurate data collection
  • The need for finer granularity
  • Inability of SNMP to contain large amounts of data
  • Reasons streaming the telemetry works better
  • Discussion around deployment of gRPC

 
Speakers

Rob Shakir, Rob Shakir
Network Management & IP Architect,
Google
Carl Lebsack Carl Lebsack
Technical Lead for Network Streaming,
Google

Top Video of 2018: HEVC vs AV1 and the Future of the Codec Battle

 

As the first post of 2019, please allow me to say Happy New Year and to thank you for the time you spend coming to the website, following by email and/or following on social media. Your visits, interest and recommendations are very important and highly appreciated. 2018 ended with being nominated for the Royal Television Society Website of the Year. Whilst the hardworking and knowledgable people at The Broadcast Bridge won, and deservedly so, I hope you’ll be as mighty pleased as I was to see a non-commercial site pitted against the best in the industry. Be assured that The Broadcast Knowledge always aims higher than before so what better motivation than to top that!

As we set our sights on 2019, there’s time for a brief look back at the top video linked to here on The Broadcast Knowledge in 2018. Looking back at the stats, it has the most page visits and the most clicks, so let’s revisit this panel on AV1 and HEVC. It’s not often you get the likes of Facebook and Harmonic sharing their latest research on stage with companies like Harmonic and Bitmovin who are very active in the Codec community, so it’s no surprise this piqued the interest of many.

This panel took place during NAB 2018 when AV1 had just ‘released’ the AV1 codec at the show but the points discussed are as relevant today as they were then including the adoption of HEVC in the marketplace. Having said that, do check out the AV1 and HEVC tags to see what more recent discussions there have been including a discussion of the future of video codecs at Streaming Media East 2018

Sit back and watch HEVC vs AV1 and the Future of the Codec Battle!

Speakers

Jan Ozer Moderator
Jan Ozer
Principal

Doceo Publishing

Thierry Fautier Mr Thierry Fautier

VP, Video Strategy

Harmonic

Michael Coward Mike Coward

Director of Engineering

Facebook

Christopher Mueller Christopher Mueller

CTO

BitMovin

Matt Frost Matt Frost

Head of Strategy and Partnerships

Google Chrome Media

Video: High Dynamic Range in AV1

Google and University of Warwick explain AV1, its current status and how its can support HDR with WMG’s trueDR at the IABM’s Future Trends Theatre at IBC 2018.

Matt Frost from Chrome Media takes the stage first giving an overview of AV1’s goals, objective quality tests and where we are in AV1’s timeline as well as answering many questions from the audience.

Next Alan Chalmers from University of Warwick explains how they added HLG, HDR10 (PQ) to AV1. Also added are new, scene-referenced, HDR methods which Alan explains the works of and reasons for.

Watch now!
Speakers

Alan Chalmers Alan Chalmers
Professor
WMG & trueDR, University of Warwick
Matt Frost Matt Frost
Director, Product Management,
Google Chrome Media

Video: HEVC Vs AV1 and the Future of the Codec Battle

In this debate from NAB 2018, the panel discusses the video codecs which are competing to be the next-generation standard in the OTT environment and, notably, HEVC and AV1 being the front-runners. The debate on which video standard is best suited to our industry is in full swing especially as the Alliance for Open Media released AV1 at the NAB Show and Apple is supporting HEVC in its products and has decided to join the Alliance for Open Media as a founding member. This panel discusses the pros and cons of HEVC and AV1, and also put in perspective content-aware encoding techniques with AVC that might be a strong challenger in the short term for OTT distribution.

Watch now!

Speakers

Jan Ozer Moderator
Jan Ozer
Principal

Doceo Publishing

Thierry Fautier Mr Thierry Fautier

VP, Video Strategy

Harmonic

Michael Coward Mike Coward

Director of Engineering

Facebook

Christopher Mueller Christopher Mueller

CTO

BitMovin

Matt Frost Matt Frost

Head of Strategy and Partnerships

Google Chrome Media

VIDEO: AV1 status update

How ready is AV1? Jai Krishnan from Google explains what AV1 is, why it was developed and what’s next for the codec.

See also Jan Ozer’s Keynote on the status of most current codecs:
https://wp.me/p9gRAY-6m

Watch AV1 Status Update