M4A File Format

M4A files Format

The M4A file type is primarily associated with 'MPEG-4 Audio Layer'. Files in. M4A format are actually the audio layer of (non-video) MPEG 4 movies. It a multimedia container format used to store compressed audio and video data; contains audio encoded with either the Advanced Audio Coding (AAC) codec or the Apple Lossless Audio Codec (ALAC). M4A files only contain audio data. The use of the ".m4a" extension arose due to the confusion between MPEG-4 video files and MPEG-4 audio-only files.

The iTunes Store provides songs in the M4A format. These songs are encoded using AAC compression, which significantly reduces the size of each file. Songs that include copyright protection have an .M4P extension. Windows Media Player 11 requires the K-Lite Codec Pack in order to play M4A files. Windows Media Player 12 (included with Windows 7) provides native support for the M4A format. Audio converter and Audio Converter for Mac allows you to convert .m4a audio to .mp3 etc with ease.

M4A Compression: MP4 vs M4A / MP3 vs M4A /

Other File Formats: 3GA / MOV / MP4 / MPG / WMV / 3GP

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