The number of HDR (high dynamic range) standards turning up in consumer devices and featured in home-video content will grow before the market decides—possibly—to scale back the selection over time.
HDR10 is ahead in content and consumer products, but in 2017, Dolby Vision gained ground, and Samsung’s HDR10+ emerged as a competitor. Hybrid log gamma (HLG) and Technicolor/Philips SL-HDR1 also advanced.
HDR10 is the early front-runner, thanks to its adoption as the mandatory HDR standard in the 4K Ultra HD Blu-ray format. HDR10 has also been adopted by all over-the-top (OTT) streaming services but one. This year, however, Dolby Vision’s influence grew as the technology spread to more 4K UHD TVs and appeared for the first time in a handful of UHD Blu-ray players and on a handful of discs.
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https://www.fiercecable.com/video/hdr-standards-competitive-tempo-picks-up-2018