AAC to MP4 Converter

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

How to convert AAC files to MP4 online?

Step 1.

Upload AAC-file

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

Convert AAC to MP4

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

Download your MP4

Let the file convert and you can download your MP4 file right afterwards.

Information about AAC and MP4 file formats

Name AAC MP4
Full name AAC - Advanced Audio Coding MP4 - MPEG-4 Part 14
File extension .aac .mp4, .m4a, .m4p, .m4b, .m4r, .m4v
MIME type audio/aac video/mp4
Developed by Bell Labs, Fraunhofer Institute etc. International Organization for Standardization
Type of format Audio compression format Media container
Description 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. 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.
Technical details 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. 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).
Associated programs foobar2000, AIMP, DirectShow, QuickTime, VLC media player. Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player
Wiki https://en.wikipedia.org/wiki/Advanced_Audio_Coding https://en.wikipedia.org/wiki/MPEG-4_Part_14