File extension OPUS

File type Opus Audio Format
Developer Xiph.Org

What is OPUS file?

Files with the .OPUS extension contain audio data in a lossy compression in the “Ogg Opus” format. This type of compression uses SILK and CELT codecs and was devised for online streaming of sound of bit rates variable between 6 and 510 kilobytes per second, which is why it is used mostly in software requiring transmission of audio through the Internet – VoIP – videoconferences, and game chatrooms.

Since the transmissions are coded in real-time, it is a rare sight to find these files physically saved on data storage devices.

Program(s) that can open the .OPUS file


If you cannot open the OPUS file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable application that supports OPUS among those that are installed on your computer.

A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the OPUS file can be found below. Now just download and install the appropriate application.

This site also defines other possible causes causing the problems with OPUS files.

Possible problems with the files that are in the OPUS format

The inability to open and operate the OPUS file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Opus Audio Format file. Below is a list of possible problems.

  • Corruption of a OPUS file which is being opened
  • Incorrect links to the OPUS file in registry entries.
  • Accidental deletion of the description of the OPUS from the Windows registry
  • Incomplete installation of an application that supports the OPUS format
  • The OPUS file which is being opened is infected with an undesirable malware.
  • The computer does not have enough hardware resources to cope with the opening of the OPUS file.
  • Drivers of equipment used by the computer to open a OPUS file are out of date.

If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the OPUS file should operate with your programs without any problem. If the problem with the OPUS file has not been solved, it may be due to the fact that in this case there is also another rare problem with the OPUS file. In this case, the only you can do is to ask for assistance of a professional staff.

Similar extensions

.a2b Adlib Tracker II Instrument Bank
.a2i Adlib Tracker Instrument Format
.a2m AdLib Tracker 2 Format
.a2p Adlib Tracker Pattern Format
.a2t Adlib Tracker Tiny Module Format
.aa Audible Audio Format
.aa3 Sony ATRAC Audio Format
.aac Advanced Audio Coding Format
How to link the file with an installed software?

If you want to associate a file with a new program (e.g. my-file.OPUS) you have two ways to do it. The first and the easiest one is to right-click on the selected OPUS file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK.

Is there a universal way to open unknown files?

Many files contain data in the form of text or numbers. It is possible that while opening unknown files (e.g. OPUS) a popular Windows simple text editor, which is Notebook will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.