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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
XVID - Extension Details
Date Added: January 01, 1970
File Extension:  .XVID
Description 1: .XVID is an extension used for movies or video clips encoded with Xvid. The XvidEncoded Video file refers to an opensource video code that was published under the GNU GPL license. This file format is handy for compressing video data using the MPEG4 technology. With it, data transmission is made faster and storage of video files is more efficient.
File Type:   Video file
Mode: Binary
Program(s) to Open:  Windows: Roxio Easy Media Creator, Xvid for Windows Macintosh: Roxio Toast Unix: Debian or Xvid for SuSE Linux
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