What is a .OPUS file?
Opus is a modern, highly efficient lossy audio codec used for streaming and voice.
- Did you know
- Opus was standardised in 2012 and now powers voice chat in Discord, WhatsApp and Zoom.
- Opus was created by merging two codecs: Skype’s speech-oriented SILK and Xiph.Org’s music-oriented CELT.
- It scales from about 6 kbit/s narrowband speech up to 510 kbit/s high-quality stereo music in a single codec.
- WebRTC made Opus a mandatory codec, which is why it became the default for voice and video calls across web browsers.
- On the web a .OPUS file is served with the MIME type
audio/opus.
- What Analyser shows you
- Inspect the waveform, spectrogram, codec, bitrate, channels, and tags of MP3, WAV, FLAC, M4A, AAC, OGG, and Opus audio, and play Apple Core Audio (CAF) files such as iMessage voice messages, decoded on-device with FFmpeg where the browser cannot.
- Open a .OPUS file
- Drag a .OPUS file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.