Mp3 is a file with audio coding format, which is the standard audio layer compressed by experts in moving pictures. It aims to greatly reduce the amount of audio data. Using the technology of MPEGAODIOLAYER 3, the music is compressed into a small file, but for most users, the sound quality of the music played is not significantly lower than that of the original uncompressed audio.

Computer files are different from ordinary file carriers. A computer file is a collection of information stored on the computer with the computer hard disk as the carrier. Files can be text documents, pictures, programs and so on. Files usually have a three-letter file extension to indicate the file type.

The difference between mp3 and mp4

1, mp3 is audio format, mp4 is video format, mp3 player can play mp3 music, mp4 player can play mp4 video format, but now there are many MP3s that can play video wav, and mp4 is better at playing video.

2. MP3 can only listen to songs, and its storage capacity is small, while MP4 is different. Listening to songs and watching movies has a large storage capacity.

3. The screen of 3.mp3 is basically very small, and the definition is very low. The resolution, brightness, response time and storage medium of mp3 are generally small, while mp4 optimizes these shortcomings.

4. The encoding algorithm of 4.MP3 music compression format is taken from MPEG- 1AudioLayer3, that is, it is a part of MPEG- 1 Audio encoding algorithm. MP3 has high compression rate and high fidelity of compressed music, which is very popular among netizens. On the other hand, MP3 also brings the problem of copyright protection, so many companies are studying new music compression formats that can effectively protect copyright.