MP4 to AAC Converter

Select files for conversion or just drag and drop them to the upload area

How to convert MP4 files to AAC online?

Step 1.

Upload MP4-file

Click "Choose File" button to select a mp4 file on your computer. MP4 file size can be up to 50 Mb.
Step 2.

Convert MP4 to AAC

Click "Convert" button to start conversion.
Step 3.

Download your AAC

Let the file convert and you can download your AAC file right afterwards.

Information about MP4 and AAC file formats

Name MP4 AAC
Full name MP4 - MPEG-4 Part 14 AAC - Advanced Audio Coding
File extension .mp4, .m4a, .m4p, .m4b, .m4r, .m4v .aac
MIME type video/mp4 audio/aac
Developed by International Organization for Standardization Bell Labs, Fraunhofer Institute etc.
Type of format Media container Audio compression format
Description 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.
Technical details Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org). AAC supports inclusion of 48 full-bandwidth audio channels in one stream plus 16 low frequency effects channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisfactory to modest requirements at 96 kbit/s in joint stereo mode; however, hi-fi transparency demands data rates of at least 128 kbit/s.
Associated programs Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player foobar2000, AIMP, DirectShow, QuickTime, VLC media player.
Wiki https://en.wikipedia.org/wiki/MPEG-4_Part_14 https://en.wikipedia.org/wiki/Advanced_Audio_Coding