How to Convert a Blu-ray for Playback on Android Phone
MPEG-4 Audio (M4A) is a container format managed by Motion Pictures Experts Group. It is actually an audio-only compression file and a filename extension created as a subtype of the MP4 extension. M4A is developed to distinguish from MP4 which contains both video and audio data since it has been widely introduced by Apple iTunes and iPod, specified to handle audio formats only.
Typically, audio with the M4A file extension is encoded with AAC (Advanced Audio Coding) lossy compression and Apple's ALE/ ALAC lossless compression. So the major music hardware support for AAC has been growing commonly and indeed, AAC M4A is the default format for the hot gadgets, including iPad, iPhone, iPod, iTunes and more.
Generally, compared with MP3, M4A is partially designed to replace MP3 (MPEG-3 Audio) as the most popular audio format, with advantages like higher quality, low bitrates and file size.
Advantages and Disadvantages of M4A
Compatible Devices and Players