Apple officially ceased support for QuickTime for Windows in 2016. While you can still find legacy versions like QuickTime 7.7.9 on Apple's support site, it is not recommended for modern systems due to critical security vulnerabilities. Most Windows users should use the Windows Media Player or third-party alternatives. Playing MP4 Files in QuickTime
QuickTime Player is the native multimedia framework for macOS, and while it is built to handle many formats, users often find themselves searching for a "QuickTime Player MP4 download" due to compatibility hiccups or the need to reinstall the application. quicktime player mp4 download
QuickTime Player comes pre-installed on all Mac computers. If you cannot find it, press Command + Space and type "QuickTime Player" into Spotlight. If it has been deleted, it is typically restored through a macOS system update or by reinstalling macOS from Recovery. Apple officially ceased support for QuickTime for Windows
QuickTime Player natively supports the MP4 container, but success depends on the internal video and audio codecs. Quicktime does not play mp4-files - Apple Communities Playing MP4 Files in QuickTime QuickTime Player is