OPUS File Extension

OPUS file icon
Opus Audio Format
  • Developer
    Xiph.Org
  • Popularity
    3.9 (22 votes)

What is OPUS file?

Files with the OPUS extension contain sound of music tracks or human speech, compressed with a lossy method. For purpose of compression, both the SILK algorithm and an algorithm based on the MDCT CELT are used, thus providing a high level of flexibility and low complexity, which enables to use the format to encode sound recorded in real-time, ale using some of the relatively slower processors.

A unique feature of sounds stored within OPUS files is the fact, that their parameters such as:

  • Bitrate - from 6 kbps up to 510 kbps,
  • Bandwidth,
  • Complexity,
  • Type of algorithm

… can differ in each fragment (so-called „frame”, covering 20ms by default).

Additional information

OPUS file format is open source and standardised by the ITEF - Internet Engineering Task Force. It was created by the Xiph.Org organisation in colaboration with Skype Technologies, currently Microsoft. Reference implementation is contained within libopus, available on the New BSD license. Sound in this format can stored in one of five sampling frequencies of different bands, and also in 255 channels maximum. It was designed in order to be used within file containers, such as OGG.

We hope we helped you solve the problem with the OPUS file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the OPUS file (apart from the lack of the proper application installed).

First - the OPUS file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the OPUS file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the OPUS file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the OPUS file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the OPUS file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on OPUS file.

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