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.
HEVC, also known as H.265 is often discussed even many years after its initial release fro MPEG with some saying that people aren’t using it and others saying its gaining traction. In reality, both sides have a point. Increasingly HEVC is being adopted partly because of wider implementation in products and partly because of a continued push toward higher resolution video which often gives the opportunity to make a clean break from AVC/H.264/MPEG 4.
This expert-led talk looks in detail at HEVC and how it’s constructed. For some, the initial part of the video will be enough. Others will want to bookmark the video to use as reference in their work, whilst still others will want to watch the whole things and will immediately find it puts parts of their work in better context.
Wherever you fit, I think you’ll agree this is a great resource for understanding HEVC streams enabling you to better troubleshoot problems.
VP9 is a well-known codec, but it hasn’t seen many high-profile, live deployments which makes Twitch’s move to deliver their platform using VP9 in preference over AVC all the more interesting.
Here, Yueshi Shen from Twitch, explains the rationale for VP9 by explaining the scale of Twitch and looking at their AVC bitrate demands. He explains the patent issues with HEVC and VP9 then looks at decoder support across devices and platforms. Importantly, encoder implementation is examined leading to Twitch’s choice of FPGA to provide live encoding.
Yueshi then looks at the potential of AV1 to Switch_Frame to provide low-latency broadcast at scale.
Zhou Wang explains how to compare HEVC & AVC with AV1 and shares his findings. Using various metrics such as VMAF, PSNR and SSIMPlus he explores the affects of resolution on bitrate savings and then turns his gaze to computation complexity.
This talk was given at the Mile High Video conference in Denver CO, 2018.
Jigsaw24’s Chief Engineer, Phil Crawley, explains video codecs from the fundamentals up. Codecs touch every part of the broadcast chain and are a vital part of the industry as much as of day to day life. So it’s worth brushing up or learning the basics to help you to fully understand what’s happening with today’s codecs, whether that be HEVC, AV1, JPEG XS or trusty MPEG4.
Thierry Fautier, speaking at SMPTE 2017, explains the planned advances in Codecs for the next 5 years explaining the new techniques and likely future abilities of the different codecs. Based on his technical paper, Thierry explains efforts to ‘boost’ HEVC and, in the future JVET which complements his comprehensive look across VP9, HEVC, AVC, JVET and AV1.
11th October 2018, 18:00 BST
Location: IET London, Savoy Place
Whilst many of us in the broadcast industry know current technology well, we would be wrong to overlook learning from the past and few can say we remember it all. This talk Former BT Chief Science Officer, Mike Carr, and current President of the IET promises to be a great reminder of the achievements of the past and why, for better or for worse, they have given us the technological landscape we work in today.
This Presidential address will overview the highlights and evolution of video compression engineering, starting with the relative simple schemes of the late 1970’s through to latest sophisticated techniques demonstrating how digital compression has played such a key part in enabling video as we use it today.
The talk is free to attend at Savoy Place, near Embankment, Central London. To register, you need to sign up for a free IET account. Following the talk is an optional paid dinner. Access to the talk is free and requires only registration!
Mike is the former Chief Science Officer for BT and responsible for the company’s world-leading research and commercial exploitation unit, including patent licensing and corporate venturing activities
During his first 15 years with BT’s Labs his career has focused on the research, development and practical design of real-time audio/visual and multimedia communications systems.
He has several patents to his name in the field of video compression and is the holder of two prestigious BT awards; the Martlesham Medal for R&D (1992) and the BT Gold medal (1994) for leading multimedia product developments.
In 1998 he was elected President of the Digital Audio-Visual Council (DAVIC) a non-profit association based in Switzerland and representing 160 companies in more than 25 countries, focused on developing specifications for audio-visual systems. From 1999 Mike was based in Silicon Valley, California, USA where he established BT’s US Technology office and Corporate Venturing activity.
Mike is a Fellow of the Royal Academy of Engineering. He received an OBE for “services to innovation” in 2017.
Thursday 27th September 2018, 19:00 BST / 11am PT / 2pm ET
Encoding and transcoding are at the heart of every video service and solution, and the codec and format landscape has never been more crowded. Publishers are wringing the most efficiency out of H.264 while making the move to HEVC/H.265 and AV1—and keeping an eye on other proprietary codecs. On top of all that are considerations like video optimization, bitrate ladders, and per-title encoding.
Join this expert panel as they discuss the latest in encoding and transcoding, including the following:
The state of the art in encoding efficiency in 2018
How per-title encoding and machine learning can increase quality and decrease delivery costs
How to build flexible and cost-effective encoding solution
The latest developments in video encoding platforms and infrastructure
The benefits of contribution to distribution encoding and transcoding
The next big advances in encoding and transcoding, including AV1