Opus GDExtension

This addon lets you import Opus, a modern lossy audio encoding with excellent compression, in Godot 4.

Opus GDExtension adds AudioStreamOpus, which is almost identical in features to the built-in AudioStreamOggVorbis.

Features

• Import .opus files in the editor.
• Play the .opus files in the editor inspector.
• Load .opus files at runtime.
• Play .opus files at runtime.

How to Use

To convert a WAV file to Opus at 128 kbits/s, install FFmpeg and run:

ffmpeg -i input.wav -c:a libopus -b:a 128k output.opus

Recommended Bitrates

Opus is transparent (perceptually lossless) at 128 kbits/s for music and 32 kbits/s mono for voice.

If you're looking to save as much space as possible, Opus is very high quality at 96 kbits/s for music.

Format	Transparent Bitrate (Music)	Transparent Bitrate (Voice)
Opus	128 kbits/s	32 kbits/s mono
Ogg Vorbis	160 kbits/s	64+ kbits/s mono
MP3	192 kbits/s	96+ kbits/s mono

Supported Platforms

Opus GDExtension has a baseline of Godot 4.4 and aims to support every platform supported by Godot 4.4.

Note: Every supported platform has binaries for single (but not double) precision and debug/release mode.

Platform	Supported
Windows x64	✅
Windows x32	✅
Windows ARM64	✅
Linux x64	✅
Linux x32	✅
Linux ARM64	✅
Linux ARM32	✅
macOS Universal	✅
Android x64	✅
Android x32	✅
Android ARM64	✅
Android ARM32	✅
iOS ARM64	✅
Web WASM32	✅

Proposal

There is a proposal and pull request to add Opus into Godot core.

Please give them a thumbs up (👍) so it's more likely to be merged!

Credits

To use this library, you need to follow the license of the following repositories:

• Opus GDExtension by Joyless (MIT license)
• Ogg by Xiph (BSD-3-Clause license)
• Opus by Xiph (BSD-3-Clause license)
• Opusfile by Xiph (BSD-3-Clause license)
• Godot by Godot Engine contributors (MIT license)