Recommended Videos What is an MP3? Before we can tackle the differences between MP3 and MP4, let’s do a quick recap of an MP3 file and its uses. MP3 is a short form for MPEG-1 Audio Layer 3.

Debating the versatility merits of MP3 vs. MP4 doesn’t really answer the question of which is better for audio purposes or whether you should seek out one type over the other.