流媒体 East '15: Streaming 4K May Arrive in U.S. by 2020
Despite all the hype around 4K at International CES, streaming 4K won't become a reality 在美国nited States until at least 2020. That opinion was offered by Thomas Edwards, vice president of engineering and development at 福克斯网络, during a 流媒体 East session on 4K and UHD streaming.
福克斯网络 is a member of the UHD联盟, and Edwards noted that today's average streaming speed 在美国.S. 大约11Mbps. "That's not good enough for 4K," he noted. While broadcasters could achieve 4K today by streaming a degraded image, 爱德华兹说 his employer wasn't interested in that. 而不是, Fox will offer 4K movie downloads through secure hardware devices that will be built into set-top boxes and TVs. These should hit the market by the end of this year. Also coming later this year are ultra-high definition Blu-ray discs that include greater luminance and an expanded color gamut. Those are touchstones of the UHD联盟, 爱德华兹说: Offering not just a better picture, 但是更好的像素, 也.
Currently, the average rate to stream 4K video is between 30 and 40Mbps. Edwards expects rates to drop with better compression technologies, and for home bandwidth to rise over time. The two rates should meet around 2020, 他说, an opinion that he clarified was his own and not his employer's. 4K video encoded at 15Mbps probably looks worse than HD video, he suggested.
High dynamic range (HDR) video will bring brighter brights and more detailed darks to viewers, 爱德华兹说. Adding HDR to video will raise compression requirements by 10 or 20 percent.
而美国.S. hasn't caught up with 4K yet, Japan is already pioneering 8K video, 爱德华兹说. NHK is doing the work, and will offer public demonstrations of 8K video 在美国.S. around the FIFA Women's World Cup tournament. The tournament runs from June 6 to July 5, and the 8K demonstrations will take place in Los Angeles and New York City.
Justin Kennington of Crestron Electronics and Thomas Edwards of 福克斯网络
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