Convert audio files online
|#||Output File||Source File||Action|
NEW! Download Audio Converter for Android to convert audio files on your phone offline.
1. Click "FILE" or "URL" button to switch local file or online file. Click "Choose file" button to select a file on your computer or enter an online file URL. The source file can also be video format. Video and audio file size can be up to 200M.
3. Click "Convert Now!" button to start conversion. It will automatically retry another server if one failed, please be patient while converting. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.
Compare MP4 with MP3:
|Full name||MPEG-4 Part 14||MPEG-1 or MPEG-2 Audio Layer III|
|File extension||.mp4, .m4a, .m4p, .m4b, .m4r, .m4v||.mp3|
|MIME||video/mp4||audio/mpeg, audio/MPA, audio/mpa-robust|
|Developed by||International Organization for Standardization||Fraunhofer Institute|
|Type of format||Media container||Digital audio|
|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.||MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players.|
|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).||The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source.|
|Associated programs||Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player||VLC media player, MPlayer, Winamp, foobar2000.|
|Wiki||MP4 on Wikipedia||MP3 on Wikipedia|