Advanced Television

Eutelsat helps world’s first 8K channel

December 3, 2018

By Chris Forrester

Eutelsat carried live 8K signals from Rome’s Vatican City to Japan in order to help launch the world’s first 8K channel for NHK, the country’s public broadcaster.

NHK partnered with Eutelsat on December 2nd from the Vatican where images were transmitted to Tokyo via Eutelsat 12 West B satellite with a mobile uplink provided by M-three Satcom. “This momentous event by NHK has broken new ground for 8K contribution via satellite,” said a joint statement.

To achieve the technologically challenging feat, NHK relied on DVB-S2X modulation, in 16APSK, and HEVC encoding. The images (7680 pixels over 4320 lines, an astounding 33.3 million pixels per image) were shot at 60 frames per second in BT2020 colour space, with 10 bits of colour depth (1 billion colours) and high dynamic range HLG (Hybrid Log Gamma), combined with 22.2 channel audio.

NHK’s 8K transmissions are now on air for viewers to its BS8K satellite channel, which is featuring 8K Ultra HD footage of major cultural and sporting events, museums and natural landscapes, providing viewers with a fully immersive experience which will be broadcast 12 hours a day. The channel will allow for further experimentation with 8K prior to the large-scale deployment of the format for the Tokyo Olympics and Paralympics games in 2020.

Gerry O’Sullivan, EVP/Global TV and Video at Eutelsat, said: “Eutelsat has been a pioneer in delivering HD and Ultra HD formats since their inception, and this broadcast confirms satellite’s unique position as one of the vital technologies capable of broadcasting 8K signals. We look forward to working hand in hand with customers such as NHK as they continue to raise the bar higher for the broadcasting industry, to deliver the best possible video experience to viewers.”

Categories: Articles, Satellite, UHD