So far Dolby Atmos has been the prevalent format on 4K disc releases, but DTS:X discs do exist. Some Blu-ray discs already support these formats, so it's not unique to UHD Blu-ray, but the next-gen audio soundtracks are more prevalent on Ultra HD Blu-ray discs. The UHD Blu-ray specification also includes object-based immersive soundtracks such as Dolby Atmos and DTS:X. HDR10 vs Dolby Vision - which is better?ĤK Blu-rays are encoded using the High Efficiency Video Coding (HEVC) standard (also known as H.265), use 10-bit colour depth and can cover the full spectrum of the Rec.2020 colour space.Nevertheless, it's fair to say that Dolby Vision is comfortably the more widely available of the two formats. Initially, HDR10+ had only Amazon Prime Video promising supported content on its streaming site, and although Amazon remains the only major VOD service to offer it, more and more 4K discs in HDR10+ have made their way to market. And what sets HDR10+ apart from Dolby Vision is its lack of licensing cost – TV manufacturers and content studios have to pay Dolby to use Dolby Vision and have little control over its development and implementation. What sets Dolby Vision and HDR10+ apart from HDR10 is the inclusion of dynamic metadata, a proprietary HDR technology that adapts its image frame-by-frame and, theoretically, renders each shot at its best. The majority of 4K discs come with the standard HDR10.
