Opus

Name: Opus
Rating: 4.8 (6 reviews)

49 likes

Cost / License

Free
Open Source

Application type

Audio Codec

Origin

International

Platforms

Mac
Windows
Linux

Opus alternatives

49likes

5alternatives

2articles

Features

Low Latency
Royalty free

Comments and Reviews

Top Positive Comment

Jan Klass

★★★★★

Oct 28, 2023

Opus is incredibly versatile and its introduction was a leap in audio encoding.

Its multi-mode/configuration capabilities allow it to equally-well support low and high bitrate/data scenarios, as well as low and high latency scenarios. Various encoding options give incredible versatility and customizability to the user to their needs.

The compression ratio is leaps better than previous and proprietary codecs.

When you do audio encoding your best choices are FLAC for lossless and Opus for lossy (but inaudably lossy by your choice).

Ayoub Abedrabbo

CommentMar 10, 2024

Opus is amazing for everything, but APPLE, because they don't want to support it..

Azazel

★★★★★

Jan 12, 2021

EditedMar 11, 2024

The best codec for podcasts or any other speech-heavy content.

Apaosha

★★★★★

Sep 20, 2012

Seems to be very promising. First tests were really good. Nice compression, and excellent quality. Looking forward to it.

Featured in Lists

Audio

By mamanem5 appsUpdated Apr 6, 2019

AppStores & Other Links

What is Opus?

Opus is a totally open, royalty-free, highly versatile audio codec. Opus is unmatched for interactive speech and music transmission over the Internet, but also intended for storage and streaming applications. It is standardized by the Internet Engineering Task Force (IETF) as RFC 6716 which incorporated technology from Skype's SILK codec and Xiph.Org's CELT codec.

Technology

Opus can handle a wide range of audio applications, including Voice over IP, videoconferencing, in-game chat, and even remote live music performances. It can scale from low bit-rate narrowband speech to very high quality stereo music. Supported features are:

Bit-rates from 6 kb/s to 510 kb/s Sampling rates from 8 kHz (narrowband) to 48 kHz (fullband) Frame sizes from 2.5 ms to 60 ms Support for both constant bit-rate (CBR) and variable bit-rate (VBR) Audio bandwidth from narrowband to full-band Support for speech and music Support for mono and stereo Support for up to 255 channels (multistream frames) Dynamically adjustable bitrate, audio bandwidth, and frame size Good loss robustness and packet loss concealment (PLC) Floating point and fixed-point implementation

You can read the full specification, including the reference implementation, in RFC 6716.