ARLA/CLUSTER: BBC vai fazer testes em TV de Ultra-Alta Definição - (UHD) TV

[João Costa > CT1FBF]

Ultra-high definition TV trial

The BBC Research & Development Blog brings news of the BBC's plans for
Ultra-High Definition (UHD) TV

The BBC will trial the distribution of Ultra-High definition
programming over both DTT and IP.

BBC R&D is actively working on Ultra-High Definition (UHD) in the
various standardisation bodies. The World Cup gives us an ideal
opportunity to practically test out some of that work. We set
ourselves the goal of demonstrating an end-to-end live UHD broadcast
over both a traditional DVB network and an adaptive bitrate delivery
approach over IP.

The UHD production will be received in the UK from an H.264/AVC
satellite contribution feed. For both DTT and IP we will be using Main
Profile HEVC to compress the video to distribution bitrates that can
be sustained within a DVB network and a super-fast broadband line. The
frame rate being used is 59.94Hz as that is the standard in Brazil.

The DTT trial will be transmitted from Crystal Palace (London), Winter
Hill (Manchester) and Black Hill (Glasgow). The transmissions are just
starting up now. As are using the same T2 modulation parameters that
are used for HD multiplexes the signal can be received on current
consumer equipment, I’m not aware of any equipment which can decode
the video. Though some existing HD models may tune the service and
decode the audio.

The stream will use the latest DVB-DASH profile and is geo-IP locked
to the UK only.
http://www.bbc.co.uk/rd/blog/2013/09/mpeg-dash-test-streams

Over the coming few weeks the BBC would like to share with you some
more technical details of the trial.

Read the full post at
http://www.bbc.co.uk/rd/blog/2014/06/bbc-r-d-ultra-high-definition-trials