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What Is the Difference Between Mp3 and Mp4?

Mp3 (mpeg layer-3) and Mp4 (mpeg layer-4) are both audio compression formats. These two formats of audio compression are based on psycho acoustic compression techniques. While they are similar in the history they share, Mp4 has done much to progress beyond the common ground that led up to Mp3.

Therefore, an MP3 file is limited with regard to the method of compression and can only store audio. MP4 on the other hand, can store video as well as audio. It can even store subtitles for a video file. Also, since Mp4 is a container, it can store audio and video that have been compressed in different fashions. In fact, an Mp4 file could be audio that has been compressed as an Mp3.

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