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Details of the .ac3 file extension

The table below provides useful information about the .ac3 file extension. It answers questions such as:

  • What is the .ac3 file?
  • What program do I need to open a .ac3 file?
  • How can the .ac3 file be opened, edited or printed?
  • Where can I find the specifications for .ac3?
  • Which MIME-type is associated with the .ac3 extension?
  • How can I convert .ac3 files to another format?
  • What are other, similar filename extensions to .ac3?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

.ac3 file extension details

AC-3 Compressed Audio

AC-3 Compressed Audio .ac3 file icon
AC3 file is an AC-3 Compressed Audio. Lossy format designed for the efficient encoding of surround sound, developed to support motion picture presentations in theaters and at home.
Category: Audio files
Application: AC3 Filter
Mime-type: audio/ac3
Magic number: -
Magic string: -
Sample: -
AC3 aliases:
AC3 related links:
AC3 related extensions:
Audio Interchange File

CD Audio Track

MIDI Music

MPEG Audio Layer 3 File

Real Audio Sound

Macintosh Sound Resource

Amiga 8SVX Sound

Creative Labs Sound Blaster Sound

Windows Waveform Sound

Free Lossless Audio Codec File

Other types of files may also use the .ac3 file extension.

.ac3 file extension error

The .ac3 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ace, a3c, ac, ca3, qc3, acr, ad3, acw, af3, c3

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

DICOM Bitmap Image
WinAce Archive
RailWorks ACE Texture
Alice v3 Class
Alan v3 Adventure Code
GNU Autoconf Input File
CaseWare Working Papers Client File
Casio WK-1800 Save All Data
Quick Chart 3 Map
ACRobot Script
open .ac3 file

Can't open a .ac3 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .ac3 file association, check the FAQ.

.ac3 file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .ac3 file extension, write to us!

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