QuickTime is a full-featured multimedia player and application framework developed by Apple Inc., capable of handling major formats of digital video, picture, sound, panoramic images and interactivity. However, since upgrading to Mavericks and then Yosemite, QuickTime won’t play MOV files anymore. As we all know, MOV is one of the most popular video formats, so it is incomprehensible for QuickTime users from Apple support community who encounter problems while playing movie files. Have you ever encountered the failure of MOV files on QuickTime? In this article, we would solve the problem for you.

Part 1: Possible Reasons for QuickTime Can't Open MOV File

Some users suddenly found their QuickTime doesn’t understand the movie file type; some said QuickTime won’t play videos downloaded from YouTube; some keep getting an error when trying to open an exported movie file in QuickTime that “The movie is not in a format understandable by QuickTime Player”; and still others failed to edit any movie file from a mini-DV camera. From all the above examples, we can conclude that those MOV files are not compatible with QuickTime. And that’s an encoding issue. If your MOV files are encoded with other video or audio codecs than MPEG-4 or H.264 video and AAC audio, QuickTime will refuse to play them. Why QuickTime can’t open MOV file?

These may happen because QuickTime player only supports MOV files encoded with AAC audio and H.264 or MPEG-4 video. If a .mov file recorded with a digital camera or an encoding received from another person has an incompatible audio / video codec or a .mov file downloaded from a website, then you may encounter QuickTime not playing MOV files or QuickTime only play audio without video problem. However, there is no need to worry because by using Remo Repair MOV tool, you can easily solve problems related to QuickTime MOV files. Another problem for this issue may also be the damaged MOV file. Please make sure the MOV file you have inserted is well-preserved.

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Part 2: Solution 1 - Installing K-Lite Codec Pack

Your first solution should be turning to video or audio codec pack for both Windows and Mac, i.e. K-Lite Codec Pack. K-Lite Codec Pack is a comprehensive selection of codecs which guarantees users will be able to play almost any video or audio file, including MOV files. It provides full decoding support for the new HEVC video format and even has DXVA2 hardware acceleration altogether with modern graphics cards. When the decoding process finishes, you’ll be able to play MOV files with QuickTime. That’s a good way to resolve the problem that MOV files won’t play on PC.


Part 3: Solution 2 - Convert MOV to MP4 File for Better Playback

Another solution is that you could convert MOV to MP4 or other formats with Leawo Video Converter for playback in QuickTime. Leawo Video Converter is an all-inclusive HD video converter program to convert video and audio between any formats for widespread users. With this powerful converter, you can convert any video to MP4. With Leawo Video Converter, you can personalize the MOV video including file merging, media editing, 3D movie creating, parameter adjusting, etc with the best output quality. Leawo Video Converter would worth a shot if you prefer powerful and efficient computer programs. As one of the top-rated video converters, Leawo Video Converter can play an important role in converting MOV to MP4. Leawo Video Converter not only converts MOV to MP4 videos, but also converts other video and audio formats, including AVI, MOV, MP3, AAC, etc. Besides, Leawo Video Converter also could convert 2D video to 3D and edit video.


Step 1: Please download and install Leawo Video Converter on your computer.

Step 2: Add target file to the program. In this step, you should open the Leawo Video Converter and enter the Video Converter segment. Add the video file to the converter by dragging or clicking the “Add video” button on the top left corner of the interface.

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Step 3: Choose output format. In this step, you will find a button on the left hand side of the big green “Convert” button on the interface. Click it and you will get a drop box. Click “Change” to enter the profile choosing panel.

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Step 4: Add features. Add features to the output videos. In this step, you should click “Edit” icon to open the edit window. After that, you can customize the output audio and video.

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By converting MOV to MP4 or other formats, the issue that MOV files won’t play in QuickTime or QuickTime can’t open MOV files can be easily resolved. As is known to all, there are a lot of videos nowadays in different formats causing incompatibility between videos and devices. An advisable solution is to convert it to a new format that’s compatible with your device. Obviously, MP4 format would be one of the best choices for widespread users, because it’s a cross-platform format supported by Windows, Mac OS, Android OS and iOS. But why choose Leawo Video Converter to do the format conversion? It’s a very reliable and effective program which supports converting video and audio between all formats, video editing features like Trim, Crop, Effect and Watermark, converting video from 2D to 3D, as well as adding external subtitle and selecting internal audio channel.

Part 4: Free Alternative to Play MOV File on Windows and Mac

If your MOV won’t be played in QuickTime, asides from converting MOV to other compatible formats, you can also turn aside to other powerful media players which support MOV format perfectly. And the third solution to resolve the “QuickTime Won’t Play MOV” issue is that you could turn to QuickTime Player alternative- Leawo Blu-ray Player, in order to play MOV files on Windows/Mac.

Leawo Blu-ray Player is all-inclusive media player software to playback Blu-ray/DVD disc, common videos and up to 1080P HD videos smoothly on Windows 8. As the best media player software combo, it has built-in various advanced audio decoding technologies like Dolby, DTS, AAC, DTS-HD and even more. It allows users to adjust audio tracks and videos as well as subtitles during playback, customize background pictures and change program skins. Users could even add videos to the internal playlist for continuous movie enjoying.


Leawo Free Blu-ray Player 

☉ 100% free movie player for Windows & Mac users to play Ultra HD 4K, 1080P and 720P videos.

☉ Free Blu-ray/DVD player to play 4K disc, folder and ISO file, regardless of disc protection and region code.

☉ Support multiple audio decoding systems like Dolby, DTS, AAC, TrueHD, DTS-HD, etc.

☉ Adjust subtitles, video and audio during media playback.

☉ Serves as a powerful Blu-ray/DVD to MKV converter to convert Blu-ray/DVD disc, folder and ISO image to MKV with lossless quality and high speed.

Step 1: Download and install Leawo Blu-ray Player.
To play MOV files with Leawo Blu-ray Player, you have to download and install his Blue-ray media player first. After that, you should launch the program.

Step 2: Load files to the program. You should load source media files for playback, which could be either video or Blu-ray/DVD disc. Click the left Open File box on the main interface of the program and the program would guide you to choose source videos.

Step 3: Make related settings for better movie enjoyment. During Blu-ray/DVD/video playback within Leawo Blu-ray Player, you could make use of several functional buttons on the playing panel in order to better visual experience.
For subtitle selection, you should click the subtitle selecting button on the playing panel for subtitle settings, which include Enable (Disable) subtitle, Subtitle offset, Subtitle selecting, Browse for subtitle.

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Step 4: Adjust video settings. For video settings, you should click the video setting button on the playing panel, and then you will enter the video settings panel, where you will be allowed to do settings for video playback.

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Step 5: Adjust audio settings. For audio settings, you should click the menu bar. Then several buttons will be presented for you to click.

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As is known to all, Leawo Blu-ray Player is the leading and powerful software to play MOV files on Windows/Mac. As a comprehensive media player, this Blu-ray playback software will surely gain more and more praise from widespread users.

Part 5: Conclusion

Due to the comprehensive codec issues or other damaged MOV files problems, MOV won’t be played in QuickTime is quite commonly seen in your life. MOV files encoded with AAC audio and H.264 or MPEG-4 video, and then if the downloaded MOV file has been encoded with the incompatible with QuickTime, users would encounter the MOV failure. But referring to the above article, the detailed information on how to convert MOV to MP4 QuickTime compatible format would help you to figure this problem out.

In comparison, if you prefer an easy and convenient way to obtain the MOV playback solution, changing to another new powerful MOV media player could be your wise choice. Trusting Leawo Blu-ray Player would not never let you down which can also allow you to set audio and video parameters based on your own preferences.