How to convert AIFF to Opus
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert AIFF to Opus
NexMedia converts AIFF to Opus on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About AIFF
AIFF (Audio Interchange File Format) was developed by Apple in 1988 on the basis of the Electronic Arts IFF format, and it normally stores uncompressed PCM audio in big-endian byte order.
Professional audio on the Mac: Logic Pro and GarageBand projects, sample libraries and CD-quality masters.
AIFF files are as large as WAV files, about 10 MB per minute of CD-quality stereo, and some Windows programs handle them less readily than WAV.
Convert AIFF to Opus online free, no account required — Opus is a modern open lossy codec for speech and music.
Change AIFF to Opus without losing quality — convert AIFF to Opus free in your browser.
Why is my AIFF file so large? Like WAV, it stores every sample uncompressed, so switching to a compressed format is the only way to shrink it — lossless ALAC keeps every detail, MP3 trades some quality for size.
About Opus
Opus is an open, royalty-free lossy audio codec standardised by the IETF in 2012 (RFC 6716). It handles both speech and music well, from very low to high bitrates.
Voice and video calls, WhatsApp voice messages, WebRTC, and the audio track of WebM videos.
Opus always decodes at 48 kHz, and some older players and devices do not support it.
Why convert voice recordings to Opus? It stays clear at very low bitrates, so calls and dictation shrink dramatically without becoming hard to understand.
What changes when you convert AIFF to Opus
- The audio is decoded and re-encoded as Opus at the default settings, so the result is close to the AIFF but not bit-identical.
- Opus uses lossy compression: the encoder discards the detail that is least noticeable, so the file is smaller than the AIFF but cannot be turned back into the original.
Settings you can change
Before you convert AIFF to Opus, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted Opus file is kept for 2 hours, then deleted.
AIFF to Opus: questions and answers
Does converting AIFF to Opus reduce quality?
The audio is decoded and re-encoded as Opus at the default settings, so the result is close to the AIFF but not bit-identical. Opus uses lossy compression: the encoder discards the detail that is least noticeable, so the file is smaller than the AIFF but cannot be turned back into the original.
What is the difference between AIFF and Opus?
AIFF is Apple's uncompressed audio format. Opus is a modern open lossy codec for speech and music.
Can I change the settings when converting AIFF to Opus?
Before you convert AIFF to Opus, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Do I need an account to convert AIFF to Opus?
No. You can convert AIFF to Opus without an account; signing in raises the file-size and daily limits.
How long is my converted Opus file kept?
The Opus file you convert from AIFF is kept for 2 hours, then deleted automatically.
Will the Opus file be smaller than my AIFF?
Opus uses lossy compression: the encoder discards the detail that is least noticeable, so the file is smaller than the AIFF but cannot be turned back into the original.
When I convert AIFF to Opus, is the audio re-encoded?
The audio is decoded and re-encoded as Opus at the default settings, so the result is close to the AIFF but not bit-identical.