Convert OPUS to AAC offline by JavaScript

Convert OPUS to AAC offline

Convert local OPUS files to AAC files offline by JavaScript in your web browser without any software downloads or file uploads!

Files:

Target:

Audio bitrate:

Sample rate:

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OUTPUT FILES:

#	File Name	File Size	Actions

How to convert OPUS to AAC offline

Choose local OPUS files, choose "AAC" as target audio format, then click the "CONVERT OFFLINE" button to start offline conversions in bulk. File size can be up to 2GB. Please note this offline audio converter only works in web browsers that support new technologies such as WebAssembly, Shared Array Buffer and Site Isolation.

Name	OPUS	AAC
Full name	Opus Audio Format	Advanced Audio Coding
File extension	.opus	.aac
MIME	audio/opus	audio/aac
Developed by	IETF codec working group	Bell Labs, Fraunhofer Institute etc.
Type of format	Audio file format	Audio compression format
Introduction	Opus is a lossy audio coding format developed by Xiph and standardized by the IETF, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low end ARM3 processors.	Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates. AAC has been standardized by ISO and IEC, as part of the MPEG-2 and MPEG-4 specifications.