BBC UltraHD trial goes live
Editor | 30 June 2014
The BBC has revealed that it used the World Cup game between Columbia vs. Uruguay on 28 June to transmit in UltraHD at a resolution of 3830x2160 over both DTT and MPEG-DASH at a bitrate of 35Mbps on both standards.

Recently the BBC R&D's department announced the corporation's intention to trial UltraHD over both DTT and IP networks and in the test it says it was able to successfully receive and decode the DTT transmissions from Arqiva's Crystal Palace site at its West London research laboratory in BBC Centre House. Transmissions also took place from the north of England and in Scotland.

The UltraHD coverage was up-linked from the Estádio do Maracană in Rio de Janeiro by Eurovision. Globecast provided the downlink facilities and the BBC used Ateme satellite receivers to decode the quad high definition AVC/H.264 signal.

During the trial the BBC also used specially modified receivers from three as yet unnamed major consumer equipment vendors, plus development boards from a chipset vendor. It also decoded a two-representation MPEG-DASH stream over the open Internet at both our site and at the R&D site of a project partner. For decoding the MPEG-DASH streams the BBC used development boards from different chipset vendors and one of the implementations used software developed by its R&D team.