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Super High Vision Trials: Networking

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Ant Miller Ant Miller | 12:00 UK time, Thursday, 27 January 2011

In the final film about the Super Hi Vision trials in TC Zero we have explored in depth the technologies used to transmit the huge amounts of data generated over the internet between London and Tokyo.  In some regards this was the most critical part of the tests, and represented a genuinely new acheivement for us in terms of the volume of data moved.  It's also an area where we can expect innovations made today to have impact in the very near future, as demand for online content races ahead, and the bandwidth demands can potentially outstrip supply very quickly.


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In this film John Zubrzycki and Chris Chambers describe the techniques used in the tests, and their potential future use for live events in the coming months and years.




  • Comment number 1.

    This is a clear misuse of licence tax payers money. This research is begin done in order deliver the Olymics in Super Hi Vision to the Japanese when the BBC has no intension of delivering this to British licence payers. Why should Licence Payers pay to enable the Japanses to see better quality than we can receive in th UK. It is even more of an insult when BBC viewers have to put up with substandard 1440x1080 pictures at extremely low bit rates.

  • Comment number 2.

    Very interesting, I hope you follow up with reports on your efforts.
    I have a similar problem to solve, in my case I need to send
    a MPEG2 program stream with low latency across the Internet.

  • Comment number 3.

    At the open source x264 project, we have done preliminary research into 4K internet transmissions in conjunction with our partners at a large European ISP and a non-profit US TV station with access to Internet2 for R&D purposes. We have managed to do Realtime 4k@50fps on a 12-core server. Four of those could do decent quality SHV and possibly splitting up the stream more could help you hit that 100Mbit/s target because x264 encoded footage will probably end up looking better than the hardware encoded footage. You could probably also modify the x264 source code to improve the quality even more.

    We did actually ask NHK for some SHV footage but they declined so we're stuck with 4K for now.

  • Comment number 4.

    With Japan proposing 120Hz for the SHV/UHDTV standards (ITU-R WP6C?) recently, and there being no objections, will that mean that European UHDTV broadcasts will also use 120Hz, and if so, what will that mean for incorporating 25/50Hz content, and also what about 50Hz lighting (or mains, if that's still relevant)?

    I read there is going to be another (ITU-R) meeting about SHV/UHDTV at the end of September this year where they say "any objections [about 120Hz] should be made known". Will the BBC be attending, and if so will they be objecting to 120Hz becoming the sole frame rate for SHV (or the only one above 60Hz?). Will they be recommending any additional frame rates to it (eg. 100Hz or 150Hz)?


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