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OPUS, or OGG OPUS, is a free and open source audio file format. Developed by Xiph.org foundation and later standardised by the IETF (Internet Engineering Task Force), it uses lossy compression to shrink files, while maintaining a high quality sound with minimal degradation. OPUS files are encoded with SILK or CELT codecs and use the OGG container format. Originally built for online media streaming, this file format is very practical for real-time interactive and audio-specific web streaming services with low delay (latency).
It is a very versatile file format, accommodating both high and low bitrates. That said, OPUS isn’t as widely used compared to more well-known audio file formats, being sidelined by other formats such as MP3 and WMA. Typical uses for OPUS files include web-based audio and video streaming, video conferencing, gaming, and radio broadcasting. OPUS files can be opened using compatible browsers such as Chrome, Firefox and Opera, but can’t be played by typical Mac media players or by Windows Media Players prior to the 2022 version. Alternative multimedia players such as VLC, FFmpeg or AIMP, however, do support the OPUS format.
It is a very versatile file format, accommodating both high and low bitrates. That said, OPUS isn’t as widely used compared to more well-known audio file formats, being sidelined by other formats such as MP3 and WMA. Typical uses for OPUS files include web-based audio and video streaming, video conferencing, gaming, and radio broadcasting. OPUS files can be opened using compatible browsers such as Chrome, Firefox and Opera, but can’t be played by typical Mac media players or by Windows Media Players prior to the 2022 version. Alternative multimedia players such as VLC, FFmpeg or AIMP, however, do support the OPUS format.

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Convert from OPUS
Using Zamzar it is possible to convert from OPUS to a variety of other formats
- opus to doc (Microsoft Word Document)
- opus to docx (Microsoft Word 2007 Document)
- opus to json (JavaScript Object Notation)
- opus to pdf (Portable Document Format)
- opus to srt (SubRip file format)
- opus to tsv (Tab-separated values)
- opus to txt (Text Document)
- opus to vtt (Web Video Text Tracks)