What format will the Sky HD system use?
Sky ‘s HD broadcasting system and new HD Box will support two HD formats: – 720p/50 (Progressively Scanned picture, 50 frames per second) – 1080i/25 (Interlaced, 25 frames delivered by 50 interlaced fields per second) Broadcasters planning on launching HD services on the digital satellite platform will be able to choose whether to broadcast content in 720p/50 or 1080i/25 Sky HD will also utilise the advanced compression technology MPEG4 (also known as h.264). MPEG4 is a more efficient means of compressing the data in a TV picture than the MPEG2 system used today.