High efficiency video coding or H.265 or finally, HEVC as it’s most commonly called is the next generation standard for compression of video transmissions that was developed with 4K resolution squarely in mind. However, despite some serious inroads into the world of 4K ultra HD display technologies, HEVC still has a long ways to go and its future still isn’t 100 percent clear.
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http://4k.com/news/hev-has-a-long-road-to-climp-before-wider-deep-adoption-in-4k-or-even-more-dynamic-hd-8418/