What is a .QTR file?
The file extension .QTR stands for QuickTime Extension Resource. This type of file is used in conjunction with QuickTime, a multimedia technology developed by Apple. Specifically, a .QTR file is a resource file that is used by a QuickTime extension file, which has the extension .QTX. These .QTX files enable QuickTime to support additional video codecs, which are tools used to encode or decode digital video.
The .QTR file contains what is known as a resource fork. In the context of Macintosh computers, a resource fork is a portion of a file that stores structured data specific to Mac OS, such as icons, images, and other types of resources needed by the application or operating system.
To open a .QTR file, you need to use Apple QuickTime Player. This program is designed to handle various types of multimedia files, including those associated with QuickTime extensions. When you use QuickTime Player, it automatically references the .QTR file as needed to support additional video codecs provided by the associated .QTX file. This process is typically transparent to the user, meaning you don't have to manually open the .QTR file yourself; QuickTime Player handles it as part of its operation.
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