In Broadcast - July 2012 - 26
WWW.INBROADCAST.COM | ISSUE 10 - JULY 2012
London Games Broadcast Infrastructure Cont.
Sound will be in 5.1 surround
Super Hi-Vision coordinated by the BBC, NHK and OBS. Six public 50-foot screens – three in the UK, three in Japan – will feature live and looped footage from three cameras, with a further VIP viewing site being hosted at the Olympic IBC and using Panasonic and NHK’s jointlydeveloped new 145-in 8k plasma screen. The world feed will hop to Japan via a series of high-speed, private academic networks, such as the UK’s JANET, taking one route via the US (where a VIP/audience reaction test screen is being set-up in Washington DC) and one via Asia for diversity back-up. NHK is specially shipping an OB truck over from Japan for the occasion, where the signal can be
switched – wipes and dissolves don’t happen in real-time on 8K streams just yet – and will be piped to Television Centre or the IBC via dual diversity dark ﬁbre. From TVC it will be compressed into IP packets – 16 x 1080i signals converted into 8 x 1080p signals – and sent to the public screens as two MPEG transport streams. Interestingly enough, the recording medium for SHV was originally hard drive but has now been switched to 16x Panasonic P2 recorders working in parallel.
Distribution & Data
Away from the madness of SHV, all signals to be distributed outside of OBS will pass through the
Transmission Centre. The Broadcast Distribution Network transmits the ITVR and the unilateral audio, video, commentator and coordination circuits from OBS to international gateways for worldwide delivery to the RHB’s home countries. The Transmission Centre also sends any necessary return video circuits to venues or other sites. OBS is also providing 11 readyto-air HD channels available for worldwide distribution via encrypted satellite. 10 are of live Olympic sport – with the company anticipating that it will feature 2200 hours of live coverage and 500 hours of editing packages and highlights this year – while the 11th is a rolling 24/7 news channel for the duration of
the games which will double as an additional source of clips material for RHBs. What is interesting, and a powerful development being exploited to the max by many broadcasters, is the Broadcast Data Feed (BDF) embedded in the live coverage. The Broadcast Data Feed is produced by OBS and is essentially a data feed designed for RHBs that includes the Olympic Data Feed (schedules, start lists, results and medals) alongside broadcast specific information (IBC distribution channels, logging information, ONC rundowns and RHB news bulletins). This feed is being used to drive any number of Digital Olympic services, as broadcasters look to exploit the second screen and also automate some of their traditional, linear processes. Italian data specialist deltatre, for instance, is combining the ODF with RHB-speciﬁc data to generate a service that it dubs the Olympic Results Platform, which processes the extremely large resultant datasets and renders them for multiplatform use. The BBC (NBC, France Télévisions, South America’s Terra and more are also using the service in some way) is using this to drive all of its broadcast graphics, as well as employing the company to develop and deliver its online interactive video player for its Games coverage. And it’s here that you get to one of the biggest numbers of all. Not so much the 1bn online viewers that are being – slightly hysterically – predicted, or even the 1.5 billion site visits that the London 2012 website is bracing itself for, but 24 – the number of live HD streams that the BBC is making available and Sky, and others, are broadcasting. Every event from every sport from every venue for two weeks...Topping that at Rio 2016 will take some doing. ■
BBC, NHK and OBS are set to bring Super Hi-Vision