Audio format
What is a .opus file?
A lossy codec designed to beat the others at low bitrates, and it’s the audio track inside WebM and Ogg Opus. VoIP apps and video calls adopted it because it keeps voices clear at bitrates where other codecs fall apart.
fileclay opens and writes Opus
When to use Opus
- Best for
- Calls, streaming, and lightweight audio.
- Advantages
- Sounds good even at very low bitrates.
- Disadvantages
- Less compatible with older software.
Convert Opus files
From Opus
All 18 output formats: .mp3, .wav, .m4a, .ogg, .aac, .flac, .oga, .m4b, .aiff, .aif, .wma, .ac3, .mka, .caf, .au, .tta, .wv, .mp2
Conversions run in your browser. Files aren’t uploaded.
Questions about Opus
How do I convert my files to .opus?
Open the fileclay converter, drop your file in and pick .opus as the output format. It runs inside your browser with WebAssembly, so nothing is uploaded, there’s no account and no watermark.
Which formats can I convert OPUS files into?
fileclay can write 19 formats from a OPUS file, including MP3, WAV, M4A, OGG, AAC and FLAC. Pick any of them as the output format when you drop the file in.
Is Opus lossless?
No. Opus compresses with loss: it discards detail to make the file smaller, and that detail can’t be recovered.