By James DeRuvo (doddleNEWS)
One thing that’s been holding back 4K into being adopted is that while codecs like HEVC and VP9 are being standardized, the supporting standards for elements of color gamut and dynamic range have remained in flux. But in a recent report, the DVB Steering Board, which is tasked with adopting standards for television broadcast worldwide, has formally locked in the HEVC, with 10-bit color as its official standard, up to 60 frames per second. And that’s going to go a long way towards 4K picking up a huge head of steam.
“HEVC is the most recently developed compression technology and, among other uses, it is the key that will unlock UHDTV broadcasting. This new DVB–UHDTV Phase 1 specification not only opens the door to the age of UHDTV delivery but also potentially sets the stage for Phase 2, the next level of UHDTV quality, which will be considered in upcoming DVB work.” – DVB Steering Board Chairman, Phil Laven
HEVC has a two stage process towards it… with Phase 1 being 4K content delivery and phase 2 being the future, with the potential of being able to broadcast 8K signals at a frame rate up to 120 fps. With that kind of bandwidth, resolution and performance, you need an equally high performing spectrum with which to provide color that will do that sharp, ultra high resolution some justice. And according to the DVB Steering Board, HEVC is more than up to the task with its 10-bit capability.
In addition to adopting HEVC, the DVB Steering Board also approved standards for second screen syncing of broadcast, as well as codec adaptive nitrate technology for transcoding of that screen via MPEG-DASH. This standard was developed for streaming content over the Internet through servers and delivered via http. The server divides the load through two parts, the media presentation description (MPD) which offers a database of available content and its locations on the web with single and multiple bitstreams, and the DASH Client itself, which is able to evaluate the bandwidth available, digital rights management, and other content and then provide the streaming accordingly.
Hat Tip – RSN