Sample Files
Details
OPUS
Opus Audio File
About
What is .OPUS?
OPUS is a modern, highly efficient audio codec optimized for both speech and music. It delivers excellent quality at low bitrates, supports real-time communication, and is widely used in streaming, VoIP, and web technologies like WebRTC.
History
Origin of OPUS
Opus is an open, royalty-free audio codec developed by the xiph.Org Foundation in collaboration with the [IETF]. Standardized in 2012 as RFC 6716, Opus was designed to unify speech and music encoding under one highly efficient codec. It combines technologies from Skype’s SILK codec and Xiph’s CELT codec, resulting in a format capable of delivering low-latency, high-fidelity audio suitable for streaming, VoIP, gaming, and professional applications. Opus has become widely adopted in modern platforms including WebRTC, Discord, WhatsApp, and YouTube.
Learn more at: https://opus-codec.org
Benefits
Exceptional audio quality even at low bitrates
Royalty-free and fully open standard
Designed for real-time communication with very low latency
Wide bitrate range (6 kbps to 510 kbps) for flexible use
Automatically adapts between speech and music modes
Native support in browsers and WebRTC-powered apps
Usage
Play OPUS files using players like VLC or supported browsers
Use as input for WebRTC-based communication tools
Convert OPUS to MP3, WAV, or AAC using FFmpeg
Test audio compression performance at different bitrates
Use Cases
Common Use Cases
Here are the use cases for this file extension
Voice & VoIP Applications
Used by platforms like Discord, WhatsApp, and WebRTC for clear, low-latency speech.
Streaming Audio
Ideal for music streaming, podcasts, and real-time broadcasts due to its efficient encoding.
Game Chat & Real-Time Communication
Opus handles dynamic audio scenes and fluctuating bandwidth exceptionally well.
Compatibility
Supported By
This extension is compatible with the following platforms.
Windows
macOS
Linux
Android
iOS (via apps or conversion)
Web Browsers (native in WebRTC)
More Details
Technical Specs
Here are some technical details about this extension
File Extension
.opus
MIME Type
audio/opus
Container Format
Ogg (typically), but can be in other containers
Audio Support
Opus (SILK, CELT hybrid)
Bitrate Range
6 kbps – 510 kbps
Sample Rates
8 kHz – 48 kHz
Channels
Mono, Stereo, up to 255 channels
Typical Use
VoIP, streaming audio, gaming, podcasts, WebRTC
Related
You May Also Like
Here are some related extensions
Got Questions?
Get answers to common questions
Opus offers exceptional low-latency performance, a wide bitrate range, and high audio quality across speech and music. It is standardized by the IETF and fully open-source, making it ideal for modern communication platforms.