Convert OPUS to OGG
Re-encode Opus audio as OGG Vorbis, the royalty-free format game engines like Unity and Godot expect. It all happens in your browser, and your file stays yours.
Why convert OPUS to OGG?
The usual reason for this conversion is game development. Unity and Godot both import OGG Vorbis out of the box, and lots of older middleware, mod tools, and game engines specify Vorbis while choking on Opus. Web projects and open-source software sometimes standardize on Vorbis too, for its long history of royalty-free use. If a pipeline, plugin, or asset spec says .ogg and rejects your .opus file, a re-encode to Vorbis is what gets it accepted. One thing worth knowing: both codecs can live inside an Ogg container, but they are different codecs, and our output is genuine Vorbis.
Quality and file size
Technically this is a step from a newer codec to an older one, since Opus outperforms Vorbis at any given bitrate. The re-encode adds a small generation loss on top, so give Vorbis plenty of headroom: a high quality setting around 256 kbps or above keeps the result clean for game audio and speech alike. Do the conversion once and keep your Opus original as the master, because repeated lossy round-trips compound the damage. For sound effects and dialogue, one careful pass at a generous bitrate keeps the loss small enough that it rarely matters in a finished game mix.
OPUS to OGG: common questions
Aren't .opus and .ogg the same thing?
Not quite, and the confusion is understandable. Ogg is a container that can hold either codec, but most tools that ask for .ogg mean Vorbis specifically. Our output is Vorbis, which is what Unity and Godot expect.
Will the OGG sound worse than the Opus file?
Slightly, since Vorbis is the older and less efficient codec and re-encoding always costs a little. At a high bitrate the difference is negligible for game assets and voice recordings.
Is my audio uploaded while converting?
Never. The entire pipeline is FFmpeg compiled to WebAssembly, running inside your browser. We have no server-side access to your file at any point.
Which engines and tools accept the converted file?
Unity, Godot, and most audio middleware import OGG Vorbis natively, and most desktop players handle it too. It is one of the safest open formats to target.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools are side experiments we wanted to share. No upsell, but if you're curious about the bigger thing, take a look.