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BBC Research & Development use case for EOSC-DIH

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BBC Research & Development use case for EOSC-DIH

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BBC Research & Development use case for EOSC-DIH

  1. 1. BBC Media & AI Large Enterprise Use Case Luka Murn, Graduate R&D Engineer 11 April 2019 EOSC-hub Week 2019 | Prague
  2. 2. Contents Introduction BBC R&D Video Compression Use Case for High Performance Computing BBC Media & AI
  3. 3. Introduction BBC Media & AI
  4. 4. British Broadcasting Corporation • Oldest and largest national broadcaster in the world, established in 1922 with over 20,000 staff • 96% of UK adults use BBC TV, radio or online each week • 300 million requests for iPlayer, Internet streaming catch-up TV, each month • BBC Archives is one of the largest broadcast archives in the world with over 12 million items BBC Media & AI
  5. 5. BBC R&D BBC Media & AI
  6. 6. BBC Research & Development • At the forefront of developments in broadcast technology, from colour TV to High Definition TV • 200+ highly specialist research engineers, scientists, designers and producers • Work on every aspect of the broadcast chain – Audiences, Production, Distribution, Programmes • Participate in many successful EC- funded projects and contribute to the setting of international standardsBBC Media & AI
  7. 7. Our Vision of the Future • A new broadcasting system with storytelling and IP at its core • Mass audience mobile services enabled by 4G & 5G broadcasting • Content tailored for individual’s circumstances, preferences and devices BBC Media & AI
  8. 8. Enabling Technologies • Ultra High Definition TV (UHDTV) format will enhance users’ quality of experience o Spatial resolutions 3840×2160 (4K) and 7680x4320 (8K) o Frame rate up to 120 fps, extended colour gamut and bit depth up to 12 bits per pixel BBC Media & AI UHD HD SD
  9. 9. Enabling Technologies • 4K UHD TV shipments exceeded 100m units, an increase by 32% in 2018 • 4K UHD TV market will continue to grow at a double-digit compound annual growth rate (CAGR) throughout its forecasting period to 20221 • BBC delivered FIFA World Cup 2018, Wimbledon 2018 and the Royal Wedding in UHD HDR BBC Media & AI 1Source: Futuresource, 2018
  10. 10. Enabling Technologies • Distribution of high resolution video content to a large number of users requires transmission of extremely large amounts of data • Only made possible by the application of video codecs that reduce the size of content sufficiently to be stored and distributed on a mass scale. BBC Media & AI
  11. 11. Video Compression BBC Media & AI
  12. 12. Video compression standards • H.265 / HEVC – High Efficiency Video Coding o Current state-of-the-art ITU-T / MPEG standard for video compression. o Targets all previous applications (low resolution) right up to UHD • AV1 – AOMedia Video 1 o Developed by the Alliance for Open Media (AOMedia). o Aims to provide a royalty-free video coding specification • VVC – Versatile Video Coding o Since April 2018 - standard under development by ITU-T/MPEG (beyond HEVC). o The goal is to reduce the bitrate by 50% compared to HEVC BBC Media & AI
  13. 13. Joint Video Experts Team (JVET) • Founded in April 2015 • Tasked with developing a new video coding standard - VVC • Contributors: BBC Media & AI 0 100 200 300 400 500 600 700 800 900 1000 OCT-15 FEB-16 MAY-16 OCT-16 JAN-17 MAR-17 JUL-17 OCT-17 JAN-18 APR-18 JUL-18 OCT-18 JAN-19 MAR-19 Numberofcontributions VVC Development
  14. 14. Versatile Video Coding • Performance results o Subjective evaluation on a UHD sequence o RD curves used for comparison (PSNR and Mean Opinion Score - MOS). • HM – HEVC test model • JEM – experimental software, basis for VVC BBC Media & AI 0 1 2 3 4 5 6 7 8 9 10 0 20 40 60 MOS Bit-rate [Mbps] Manege, 3840x2160, 60 Hz HM JEM AV1 “An Overview of Recent Video Coding Developments in MPEG and AOMEDIA” in Proc. IBC 2018, Sept. 2018. (DOI: 10.5281/zenodo.1494930)
  15. 15. BBC R&D’s Video Coding team • Contributes to development of both HEVC and VVC standards • Performs core fundamental research, looking at new ways of performing compression based on Artificial Intelligence and content analytics BBC Media & AI Media & AI Video Coding Standardisation BBC R&D Video Compression Research
  16. 16. COGNITUS H2020 • End-to-end platform to aggregate User Generated Content (UGC) during events, enhance to Ultra- High Definition (UHD) quality and provide semantic enrichment to facilitate the smooth integration in broadcast productions • http://cognitus-h2020.eu/ BBC Media & AI
  17. 17. JOLT H2020 • Harnessing digital and data technology for journalism • Optimization of quality of delivered video • Advances in ML application to large video content databases • http://joltetn.eu/ BBC Media & AI
  18. 18. Use Case for High Performance Computing BBC Media & AI
  19. 19. Compression vs. Complexity • Raw RGB video, 10 bits per pixel, 2160p60 = 14.93 Gb/s • Highest average broadband speed in Europe (2017/18) = 46 Mbit/s (Sweden)1 • Fast implementation can drastically compromise the compression efficiency • Advances in ML/AI open numerous new ways to improve compression further BBC Media & AI 1Source: Cable.co.uk and M-Lab, 2018
  20. 20. CPU Resources • Video coding is a CPU-intense process, parallelizing processes is a must • Longest encoding run time of 1 test point = 4.8 days • Encoding run time of all test points = 288.8 days BBC Media & AI
  21. 21. GPU Resources • Machine learning algorithms see increased use in broadcast scenarios (video content adaptation, enhancement, production, quality evaluation, delivery) • Training 1 shallow neural network with a UHD sequence on 1 consumer GPU = 0.5 days • Training 1 deep neural network with a UHD sequence on 1 consumer GPU = 0.8 days • ML is heuristics-based = need for multiple network configuration testing BBC Media & AI
  22. 22. Our reasons for involvement • A requirement to create a new broadcasting infrastructure o Need for a flexible, transparent, provider-independent, auto- scalable solution, deployed over either private or public infrastructures • Dynamic inspection and setup change based on performance • Scalability testing o Large size of digital media libraries makes it very important to provide guidance as to the level of resources needed BBC Media & AI
  23. 23. Thank you www.bbc.co.uk/rd Email: luka.murn@bbc.co.uk Twitter: @BBCRD BBC Media & AI

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