Convert AIFF to Opus Online Free
Convert large uncompressed AIFF files to Opus — the most efficient modern audio codec for web streaming, WebRTC, and mobile apps. Opus delivers excellent quality at a fraction of the AIFF file size.
ChangeThisFile converts your AIFF to Opus using FFmpeg on secure servers. Opus is an open royalty-free codec that achieves excellent audio quality at very low bitrates, making it ideal for web streaming, Discord bots, and WebRTC. Converting from lossless AIFF gives Opus the best possible source quality. Files are auto-deleted, free with no signup.
Convert AIFF to Opus
Drop your AIFF file here to convert it instantly
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AIFF vs Opus: Format Comparison
Key differences between the two formats
| Feature | AIFF | Opus |
|---|---|---|
| Compression | Uncompressed PCM | Lossy (best-in-class efficiency) |
| File Size (3 min) | ~30–60 MB | ~1–4 MB |
| Open Standard | Yes | Yes (IETF RFC 6716) |
| Browser Support | Limited | All modern browsers |
| WebRTC Use | Not applicable | IETF mandated |
| Quality at 96 kbps | N/A (lossless) | Excellent (near-transparent) |
| Minimum Latency | High (large files) | Ultra-low (2.5 ms) |
| Apple Device Native | Yes | Not natively in Music app |
When to Convert
Common scenarios where this conversion is useful
Web audio streaming from Logic Pro exports
Convert AIFF exports from Logic Pro to Opus for web streaming. Opus achieves transparent quality at 96-128 kbps, reducing large AIFF files to a fraction of their size for web delivery.
Discord bot music playback
Discord uses Opus natively. Convert AIFF music files to Opus for streaming through Discord bots with the best possible quality — starting from a lossless AIFF source.
WebRTC audio prompts and hold music
WebRTC mandates Opus. Convert AIFF audio announcements, IVR prompts, and hold music to Opus for deployment in WebRTC-based contact centers and communication platforms.
Mobile app audio from studio masters
Convert AIFF studio masters to Opus for mobile app audio assets. Opus at 96 kbps provides excellent quality while reducing asset sizes from 50 MB AIFF to under 3 MB Opus.
How to Convert AIFF to Opus
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1
Upload your AIFF file
Click the upload area or drag and drop your AIFF file. Files up to 50MB are accepted. The upload is secured with HTTPS encryption.
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2
Convert to Opus
Click Convert. FFmpeg encodes the lossless AIFF PCM audio using the libopus encoder. Converting from AIFF gives Opus the highest possible input quality.
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3
Download your Opus file
Download the Opus file, which will be dramatically smaller than the AIFF source. The file is auto-deleted from our servers after download.
Frequently Asked Questions
Yes. Opus is a lossy codec, so converting from lossless AIFF introduces irreversible quality reduction. However, Opus is exceptionally efficient — at 128 kbps, Opus quality is near-transparent to most listeners. Converting from lossless AIFF ensures maximum Opus output quality.
Dramatically smaller — typically 10-30x. A 50 MB AIFF file can become 1-4 MB as Opus at 64-128 kbps, making it highly practical for web streaming and mobile distribution.
Yes. All major modern browsers support Opus natively: Chrome, Firefox, Edge, Opera, and Safari 14.1+. This makes Opus excellent for cross-browser web audio delivery.
macOS Safari 14.1+ plays Opus in web pages. The Music app on macOS and iOS does not natively support Opus standalone files. VLC for iOS and macOS can play Opus files.
AIFF files are enormous (30-60 MB for 3 minutes) and have limited browser support. Opus achieves equivalent perceived quality at 1-4 MB and has universal browser support, making it far more practical for web audio.
Yes. Opus is fully open and royalty-free, standardized by the IETF. There are no licensing fees for using Opus in commercial products, apps, or services.
Opus internally uses 48000 Hz as its native sample rate. If your AIFF is at 44100 Hz, FFmpeg resamples to 48000 Hz for Opus encoding. This is standard and does not cause audible quality loss.
Yes. Files are uploaded over HTTPS, processed by FFmpeg on our server, and automatically deleted after download. We do not retain or access your audio content.
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