WHAT IS OPUS?
Opus is a lossy audio format created in 2012 by the Xiph.Org Foundation and then standardized by the IETS (Internet Engineering Task Force). The Opus format is usually used by music streaming services and messaging apps with voice-recording features. We’ve provided specifications below for the Opus file type and a list of programs that can play Opus files.
In Opus files, audio data is stored in an OGG container. Opus files are encoded with SILK (codec developed by Skype) or CELT (codec created by Xiph.Org) and support variable bit rates (6-510 kb/s). We’ve listed below some of the programs that support the playback of Opus files. Refer to this list if you’re not sure how to open this type of audio file.
VLC, Winamp, SMplayer, and AIMP