This post instructs how to install the HEVC (H.265) codec on Windows 11 for playing media files encoded in the HEVC format, primarily used in iPhones and some 4K Blu-ray discs. Users can purchase the codec from the Microsoft Store for $0.99 or opt for a free alternative by installing the VLC video player that comes with built-in codecs. The post also mentions how to install support for the increasingly popular High-Efficiency Image Format (HEIF) on Windows 11.