File Extension Search

.qdat File Extension

Developer: Apple
File type: QuickTime Install Cache File
You're here because you have a file that has a file extension ending in .qdat. Files with the file extension .qdat can only be launched by certain applications. It's possible that .qdat files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .qdat file?

The QuickTime Install Cache File is stored in the QDAT format and is affixed with the QDAT extension, and is used by the Quicktime software. These QDAT files are generally classified as proprietary data files that contain installation data used for installing QuickTime. They are used to provide input values like default fonts to the QuickTime installer, which uses those values when writing the QuickTime program to the hard drive. The QDAT file is primarily associated with a file called QuickTimeInstallCache.qdat and accompanied or bundled by an execution file known as QuickTimeInstaller.exe. These data files should be placed in a directory whose name matches the bundle identifier of the app. The software is used for creation and playback of movies and audio. The latest versions of the software are Quicktime 7 and Quicktime X. The Apple QuickTime software can be used in Microsoft Windows-based platforms and Mac Operating systems to access and view the content stored in these QDAT files.

how to open a .qdat file?

Launch a .qdat file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .qdat file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .qdat files aren't yet associated with it. In this case, when you try to open a .qdat file, you can tell Windows which application is the correct one for that file. From then on, opening a  .qdat file will open the correct application. Click here to fix .qdat file association errors

applications that open a .qdat file

Apple QuickTime Player

Apple QuickTime Player

Apple QuickTime Player is a multimedia player software that handles a variety of files of different formats from digital photos to panoramic images, audios to videos as well as interactivity. This multimedia player program is available for Mac OS X computers as well as later versions of Windows computers. This software product by Apple has Software Development Kits or SDKs which is available to the public as long as subscribed with the Apple Developer Connection or ADC. It has QuickTime framework, which is compatible with other free player applications, that provide several functions. These include the encoding of audios and videos, transcoding of those same files, decoding with the option to send a decoded stream to graphics subsystem or audio subsystem, and a component plugin architecture to support other codecs (third party like DivX). The latest version of this software is QuickTime Player 7 which is downloadable for free for Mac and Windows computers.

a word of warning

Be careful not to rename the extension on .qdat files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .qdat. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.
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