SBS is upgrading its HD format to 1080i from 720p on 5 June 2012.
Dear forum users,
Due to ongoing issues providing an accurate closed captions service across both SBS One HD and SBS One SD simulcasts, SBS will be moving to a full interlaced based workflow across all its production chains. All SBS One services (HD, SD and Analogue) are derived from a single HD play out system, with down conversion to SD and Analogue at the end of the play out and transmission chain. For some time, SBS has been unable to provide accurate closed captions across the required and simultaneous, progressive and interlaced formats. On 5 June 2012, SBS will progressively work across all markets to change the HD transmission format from 720p50 to 1080i50.
Due to unique spectrum limitations resulting in SBS having less available transmission bandwidth than other broadcasters, SBS has chosen a transmission raster of 1280x1080.
This raster choice comes from significant testing to determine the best overall viewer picture quality from the available bandwidth, across the various content types presented on SBS. As native 1080i50 content will no longer need to be cross-converted to 720p50, SBS viewers will see sharper high definition pictures on SBS One HD with closed captions available on required programs, making SBS One HD accessible for people who are deaf or hearing impaired.
Viewers who experience transmission issues are advised to re-scan their television or digital tuner as per the manufacturer's instruction manual.
SBS Broadcast Engineering
Edited by SBS Broadcast Engineering, 01 June 2012 - 11:43 PM.