The .opus file extension is used for an audio codec format that was created by the Internet Engineering Task Force (IETF). These OPUS files contain digital audio data that is stored in an OGG container. Some VoIP tools generate these .opus files through its embedded set of telephony features and voice recording functions.These OPUS files are also used by some applications that provide interactive audio-related functions and real time Web streaming services for audio data. These include Web frameworks, music streaming programs and instant messaging (IM) tools with voice chat and audio recording features.VLC media player, which was created by the VideoLAN Project Team, can be used to open and view the audio content of these .opus files. This software has versions for Windows PCs, Mac OS X computers and even mobile device platforms like Android and iOS.
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If you have additional information about the OPUS file format or software that uses files with the OPUS suffix, please do get in touch - we would love hearing from you.