Mp3 or mp4 is better.

It depends on your main needs. If you just want to listen to music, choose MP3.

If you want to buy videos, movies, etc. Then MP4 is the first choice.

If you want to buy a low-priced MP4, you might as well buy a better MP4, because if the MP4 capacity is below 5 12M, it has no practical significance, and the playback effect of low-priced MP4 is not very good.

Introduction to MP3:

Mp3 player (lgb mp3 player), as its name implies, is a music playing tool that can play MP3 format. The compression ratio of MP3 player can reach 1: 12, but it doesn't sound distorted to human ears, because it removes sounds other than human ears from digital audio without changing the most important sounds. In addition, MP3 players can upload and download computer files in any other format, and MP3 players have the function of mobile storage.

MP3 player is actually a small computer with specific functions. In the small body of MP3 player, there are MP3 player memory, MP3 player display, MP3 player CPU or MP3 player decoding DSP (Digital Signal Processor) and so on.

Introduction to MP4:

MP4 can also be understood as MP4 player, which is a common marketing term for portable media players from Chinese mainland. MP4 player is a multifunctional player integrating audio, video, picture browsing, e-books and radio.

MP4, full name MPEG-4? 14 is a multimedia computer file format with MPEG-4 extension, which mainly stores digital audio and digital video.