This is most obvious in darker images and color gradients, where compression results in flat textures or banding. While Apple's compression is pretty good-you still get 4K definition and high-quality audio-you do lose some detail compared to a 4K Blu-ray. This is far too much data for most people to stream or download using iTunes, so Apple compresses movies to about a tenth of that size. Typically, a Blu-ray movie takes up about 25GB to 35GB of storage. Movies from iTunes, and other digital stores, still fail to match the quality you get with a 4K Blu-ray. But you'd be mistaken if you thought that meant the video and audio quality was exactly the same across both formats. *Blu-ray playback is not supported with some AMD graphics drivers, NVIDIA graphics drivers higher than version 472.84, and graphics on Intel 12 Generation Core Processors (Alder Lake) and up.Most movies are available in 4K video with some form of Dolby surround sound for both physical Blu-ray purchases and digital iTunes purchases. Intel HD Graphics (4th Generation Core/Haswell) or equivalent for 4K playback.NVIDIA® GeForce® 500/400/300/200 or higher, AMD Radeon HD 6000 series or higher, Intel® H5x/G4x series or higher for Blu-ray 3D playback.NVIDIA G8x and above, AMD M7x and above, or Intel Core Processor Family integrated graphics for Blu-ray and HD playback*.Minimum: AGP or PCI Express graphic accelerator card with DirectDraw Overlay support for DVD disc playback.Minimum: 256 MB RAM for DVD disc playback.Intel Core i5 or equivalent for 4K playback.Intel Core II Duo T2400 1.83 GHz or AMD Athlon 64 X2 3800+ 2.0 GHz for Blu-ray 3D playback.Intel Core Processor Family or AMD Athlon 64 X2 3800+ 2.0 GHz for Blu-ray and HD playback.Minimum: Intel® Pentium® 4 2.8GHz or equivalent AMD Athlon processor for DVD disc playback.Windows 11, Windows 10, Windows 8.1, Windows 7, 64-bit OS highly recommended.
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