Opus: conversion steps
- Upload your Opus file to start.
- Convert Opus to AAC.
- Download the Opus file.
About Opus files
a modern open lossy codec for speech and music
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: what conversion changes
Converting Opus re-encodes audio.
Opus: settings to change
Before you convert Opus files, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits of the Opus format
Opus always decodes at 48 kHz, and some older players and devices do not support it.
Common questions about Opus
Why won't my car stereo or older phone play Opus files? The codec only became widespread in the last decade, and hardware that predates it usually decodes just MP3 — converting keeps the music compatible.
Why convert voice recordings to Opus? It stays clear at very low bitrates, so calls and dictation shrink dramatically without becoming hard to understand.