ULTRAFLIX again From another Article Review: As for streaming: Netflix, Amazon Video, UltraFlix, Ultra (from Sony), Vudu and YouTube each have smaller by growing libraries of 4K Ultra HD content, and a handful even offer HDR and wide color gamut support. Many of these are available by apps available on the TVs smart TV platform, or can be added with outboard 4K UHD media adapters like: the latest premium Roku Ultra, FireTV, Google Chromecast, Nvidia Shield and other devices.