Refer to the documentation for QuickTime for more information about QuickTime settings.

Note: On Windows, the result may be dependent on whether QuickTime Player is set to display through DirectX or Safe Mode (GDI). However, the gamma adjustments that QuickTime Player makes are not consistent between Mac OS and Windows, meaning that the same file may not look the same in QuickTime Player on Mac OS and Windows. QuickTime Player bases the amount of gamma adjustment on the codec in use (if the file is not tagged with a specific gamma value). When QuickTime Player displays a movie file, it adjusts the gamma in order to make the image look correct. The specific amount of gamma adjustment required to make a video file look correct depends on the given codec, the operating system (Mac OS and Windows assume different default gamma values), and any adjustments made to the system's color management settings (for example, Apple ColorSync on Mac OS). Most video codecs require some gamma adjustment to look correct on a computer monitor.

Quicktime movie