1 / 11

XP EU Peering Forum More webcasting?

This presentation by Brandon Butterworth explores the growth of BBC webcasting from its early days in 1995 through key milestones like the Hong Kong handover and the 2004 Olympics. Highlighting the challenges and technical innovations, it discusses the shift towards broadband and multicast streaming, including plans for future content delivery and collaboration with ISPs. Butterworth emphasizes the importance of scalability and audience engagement, particularly focusing on UK-centric broadcasts and the need for business cases to drive technical advancements.

rey
Télécharger la présentation

XP EU Peering Forum More webcasting?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. XP EU Peering Forum More webcasting? Brandon Butterworth

  2. BBC webcasting growth • 1995 <100 concurrent streams • 1997 take off - election, Hong Kong hand over (1st video), Diana funeral (syndicated) • 1999 120M 8K streams - Cricket • 2002 1.2G 24K - Budget, Queen Mum • 2003 2.2G 44K - Saddam statue fall • 2004 ? - Olympics

  3. Webcasting the Olympics • BBC has acquired UK broadband rights to a number of events • This is new direction and expected to grow • Conditional on UK only users - access via BBCi Broadband providers http://www.bbc.co.uk/broadband/ • No international access allowed

  4. Webcasting the Olympics • Limiting to UK reduces potential audience • Previously peaked 42K streams (2.4Gbit/s) for toppling Saddam statue • That was narrowband, UK & international • Olympics predicted 50K concurrent UK streams

  5. Legacy Unicast • Regular unicast Real Media and sometimes Windows Media streams continue • Starting to get to the limits of sensible scalability • 50K @ 250kbit/s = 12.5Gbit/s • Private peers added to avoided congesting our IX ports • Anyone who needs a PI contact peering@bbc.co.uk. Some of you need to do this (largest peer estimated will be 2.5Gbit/s) • Some propositions avoided due to scale

  6. Multicast Trial • Previous trials and conference presentations through 2001 showed technical interest • Lack of business need meant no pressure to overcome technical limitations • BBC to start presenting content multicast only, providing that business need • Technical obstacles remain and are understood, the purpose of the trial is to encourage solutions • Equipment has matured, ADSL now widespread • Broadband is the target, POTS survived on unicast

  7. Multicast Trial Plan • Work with a number of pioneer ISPs, all welcome multicast-tech@bbc.co.uk • Olympics will include 6 streams some available only on digital tv • Regular broadband rates • 225Kbit/s with some extreme 500K or 1Mbit/s • Mostly delivery trial so content will be Real 10 • Some content trials too • Other platforms with limited user base will be run in parallel (e.g. H264/AVC, perhaps BBC video codec)

  8. Multicast Trial Plan • Stand alone infrastructure, new ASN • Dedicated IX ports, PIs in Telehouse North if required (desire higher QoS than unicast) • UK only routes as per BBCi Broadband • Non UK use will be policed (unicast too) • Sustaining services - at least 24x7 radio stations, more to come

  9. Beyond the Olympics • R&D led project, not a production service • Lots of details still being worked out • We reserve the right to try things that don’t work out • We encourage people to join in as predictions may be wrong swamping unicast platform • Feedback welcome, we’ll have engineer time allocated to working with ISPs and understanding issues

  10. Beyond the Olympics • BBC Charter - we’ve committed to broadband • Convergence will be collision • IMP - internet PVR • PVR - PC crossover

  11. Questions

More Related