Why QuickTime Can't Play MP4 or MOV files?

The Core of The Problem

As we know, extension is the container format of a video/audio file. QuickTime first check the extension of the file and then automatically select a codec to encode the file. If the codec of your MP4 or MOV files is not supported by QuickTime, it still can’t read the file even if the extension is recognizable to QuickTime. The following part explains how to tackle this problem in an easy way.

Convert Video to QuickTime Format on Mac OS X

Step 1, Download and install QuickTime video converter

You can download it for free here:

To install it, simply mount the .dmg archive by double-clicking it, and copy the application to your applications folder (or wherever you want).

Step 2, Load video files

Drag & drop video files to the program. Or go to "File" menu, choose "Add Video/Audio files" to locate the files you want to add. This QuickTime video converter for Mac also supports batch conversion, so you can import and convert several multimedia files at a time.

load video, QuickTime video converter

Step 3, Choose "MOV" as output format

Select QuickTime, convert video to QuickTime

Note:Have several video files and want to combine all of them? Just check "Merge into one output file"

Or, you can also use the "split","crop","rotation" and "adjustments" function to edit videos before conversion.

QuickTime Settings, MOV settings

Step 4,Start video to Quicktime Conversion on Mac OS X

Click “Convert” to convert Video to QuickTime files on Mac.If you don't want to wait around during conversion, this smart program allows you to shut down the computer automatically after conversion.

This video converter is specifically designed for Mac OS users, including Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard on iMac, Mac Pro, MacBook, MacBook Pro, MacBook Air, etc.