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QuickTime Apple media player has built with numerous types of codecs, such as MPEG-2, MPEG-4, H.264, H.263, H.26 and other general-purpose codecs. But, some professional and domain-specific codecs are not added in QuickTime media player. You have to add them separately if your video file demands.

When you are trying to play an unsupported media file on QuickTime, it shows you a specific error- “The document could not be opened. A required codec isn't available.” This message clearly indicates that the codec that is required to play this document does not exist on your computer. Sometimes, you get this error even when there is supported codec installed but that is incompatible to play your M4V file container.

Then, how to Fix QuickTime Codec Error?

Method #1: Installation of the Required Codecs

As this error mainly occurs when the required codecs are not available, so firstly you have to install the missing codecs. Before installing, you need to determine the codecs used. Here are the steps to find and install the missing codecs.

Step #1: Finding the Codecs

Open media file using QuickTime media player and then open Inspector window. In case, you failed to find the codec on this window, then go to Finder and open the Get Info window of the corresponding file to view the codecs.

Step #2: Installing QuickTime codecs

Codecs are placed inside /Library/QuickTime folder on the Mac machine. Once you find the list of codecs used in a QuickTime file, go to that folder and just copy the component file there. After copying the component file, re-launch the QuickTime.

Method #2: Fixing the QuickTime Codec Error using the Repair QuickTime software

Repair QuickTime Software helps to fix QuickTime file that is unplayable and showing errors. It doesn’t damage your original file while repairing as it works on a read-only mechanism.

How to Solve QuickTime Codec Error using the Repair QuickTime Software?

Step 1: Download and run the application on your system.

Step 2: Select the file which has to be fixed and healthy file using the Browse button

Unable To Play MOV File In QuickTime - Home Page

Step 3: Then click on the Repair button to start the repairing process

Unable To Play MOV File In QuickTime - Home Page

Step 4: After completion, you can view the file using a Preview option

Repair Unable QuickTime MOV File - Save QuickTime MOV File

Step 5: Now, select the location to save the repaired file and click on the Save button

You can use these steps even when your MOV, MP4 and M4V file gets corrupted or broken due to any reason. It solves CRC error and header corruption issues in QuickTime file. You can even make use of this tool to repair H624 movie file. Also, the tool comes handy to repair corrupted H624 movie file when it is damaged due to the virus or malicious program.