MP3 vs M4A

MP3 file type is primarily associated with MPEG Audio Stream, Layer III which is an audio-specific format that was designed by the Moving Picture Experts Group as part of its MPEG-1 standard and later extended in MPEG-2 standard.

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.

Summary:
1: M4a is actually an audio-only Mpeg-4 compression file.
2: M4a is developed to have better audio quality in a lesser space than the mp3.
3: Obviously, mp3 remains to become more popular of audio formats including the lesser known m4a.
4: Mp3 was the first to come out and m4a was partly developed to actually take away mp3′s throne as the most popular audio format.
5: Mp3 had reached the distinction that it can be played anywhere, with almost any playback device while m4a has not reached that point just yet.

Other Comparison: 3GP vs 3G2 / MP4 vs FLV / MKV vs MP4 / MP4 vs MP3 / 3GP vs MOV / 3GP vs FLV / M2TS vs MP4 / MP4 vs 3GP

Related Post of MP3 File formats

Related Post of M4A File formats