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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
MOVIE - Extension Details
Date Added: January 01, 1970
File Extension:  .MOVIE
Description 1: .MOVIE file extension is linked with QuickTime Movie File. This is the movie file that has been formatted or saved in the Apple QuickTime format. .MOVIE file may utilize one of the various compress codecs such as H.264 video codec that uses highefficiency compression algorithm. QuickTime 7.0 was introduced together with H.264 support. It was released with Mac OS X 10.4 Tiger and it is also available with the Windows version of QuickTime.
File Type:   Movie, Video & Multimedia File
Mode: Binary
Program(s) to Open:  Windows & Mac: Apple QuickTime Player
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