That's a battle not likely to be won by an archaic physical media, no matter how shiny it's marketed as being. 4K is 4K to most people (and if you're reading this, I'm not counting you in the "most" group). Worse, most people won't know there's a difference. The compression issues we've seen with HD are just as possible with UHD, though how it's compressed is different. The fact is, most 4K Blu-rays will look significantly better than any streaming feed. Netflix, Amazon and others offer 4K streaming, and most offer HDR content as well. Though Blu-ray disc sales are still a big source of revenue for the studios, their popularity is rapidly declining. Should you care? 4K Blu-ray faces a lot of competition from 4K streaming. Sorry.Īudio: Expect formats such as Dolby Digital and True HD in their respective variations, and DTS in its various flavors, will all be there. These discs won't play in your current player. Greater capacity discs: Most current Blu-rays are 25GB, some are 50GB.
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Technically, you could fit a 4K movie on a current Blu-ray disc (size-wise), but at that level of compression, what's the point? Instead, there will be. H.265/HEVC: This is the latest codec, allowing 4K at "reasonable" bit rates. Still, that leaves some headroom for future concert videos or if you want to torture your brain with the HFR "Hobbit." Not a big deal, honestly, as nearly all movies are 24fps (and will certainly will be in their native frame-rate on 4K BD). At the very least, this means more steps of gradation - no banding, not that Blu-ray had much. Most 4K Blu-ray discs are available with HDR.ġ0-bit: Both HDR and expanded color are possible, thanks to a higher bit-depth of 10, greater than current HD's 8-bit. It means brighter highlights, expanded contrast ratios and more, on TVs that support it. High dynamic range: Most 4K Blu-rays have HDR data. For the current tech, check out: What is wide color gamut?
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For background info, check out Ultra HD 4K TV color, part I and Part II. 709, which dates back to the dark ages (of CRT). Either one is a big improvement over the current HD standard used on standard Blu-ray, Rec. 2020 standard in the future, though only the smaller DCI's P3 color range is available on today's discs.
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The 4KBD format has the ability to do the full extent of the Rec. The problem is, they'll need expanded color gamut content for this feature to be useful. Expanded color: Thanks to advancements such as OLED and quantum dots, a much wider color gamut is possible in many modern TVs.
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