Convert MP4 to AAC offline by JavaScript

Convert MP4 to AAC offline

Convert local MP4 files to AAC files offline by JavaScript in your web browser without any software downloads or file uploads!

Files:

Target:

Audio bitrate:

Sample rate:

Show conversion logs

OUTPUT FILES:

#	File Name	File Size	Actions

How to convert MP4 to AAC offline

Choose local MP4 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	MP4	AAC
Full name	MPEG-4 Part 14	Advanced Audio Coding
File extension	.mp4, .m4a, .m4p, .m4b, .m4r, .m4v	.aac
MIME	video/mp4	audio/aac
Developed by	International Organization for Standardization	Bell Labs, Fraunhofer Institute etc.
Type of format	Media container	Audio compression format
Introduction	MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.	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.