If the above solution does not work, you can try playing your video on other installed media player applications on your Mac. Use Other Installed Apps to Play Videos on Mac All you have to do is go to the 'Help' tab located on the QuickTime player window, select 'Update Existing Software.' Follow the instructions given on the screen and complete the update process. When it comes to updating QuickTime player applications, it is unnecessary to uninstall the app and then reinstall it again. So, how do I update QuickTime player on Mac? The QuickTime player might be too old, which is why it cannot read the file. When you cannot open your file with QuickTime player, it either means your application is either incompatible or outdated. Now, let us look at different solutions to fix 'QuickTime player not playing video' issues. The QuickTime Movie format supports video or audio tracks encoded using different types of codecs.Īpart from these formats, you can expand QuickTime to utilize more media formats by installing additional QuickTime components on your Mac. Some of them include MPEG-4 files (MP4, MP3, M4V, M4A), QuickTime movie files (MOV), DV Stream, MPEG-2, Mjpeg, AVI, and even some audio files such as AIFF, WAV, and AAC. QuickTime Player supports multiple file formats. What Format of Video Files Can QuickTime Player Open? Whatever the reason, you can overcome these problems using the right method and enjoy the video viewing experience. There can be several reasons for it, like codec issues, software issues, filename inaccuracy, and more. It can be discouraging to find out that QuickTime Player cannot open video files on your Mac. QuickTime Player Makes Video Files Not Open on Mac? Fix It So you need to resolve all the internal Mac errors and make sure to download reliable antivirus software that helps you scan all the issues and get rid of the virus that infected your computer. For instance, if your computer is infected with malware, it may prevent QuickTime player from opening your files.

A problem in your operating system may also cause QuickTime to stop working.

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