Read on below to find out various solutions if QuickTime no longer plays videos in macOS Big Sur. If you encounter this trouble, don’t worry because there are several ways to get around this issue. These instances can be extremely annoying, especially if you rely mostly on QuickTime for media playback. However, there are times when the QuickTime player cannot open or play videos for some reason or another. It is so easy to use and does not require much setup. Apple’s QuickTime is one of the main video display services and is the default for macOS.
When you play a video or audio on Mac, it is played through QuickTime most of the time, unless you changed the default media player for your computer.