What does the mp4 format look like?

The mp4 format is an encapsulation format, not an encoding format; to simply understand, it is just an extension, and the content inside is variable. MP4 was originally an audio format and has nothing to do with MPEG-4. , just like MP3 and MPEG-3 have nothing to do with each other.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

MP4 is actually an encapsulation format, not an encoding format. To understand simply, it is just an extension, and the content inside is variable.

MP4 was originally an audio format and has little to do with MPEG-4, just like MP3 has nothing to do with MPEG-3. MP3 is the abbreviation of MPEG-1 Audio Layer 3; and MP4 is MPEG-2 AAC, which is completely an audio compression format.

Extended information:

Features of MPEG-4

1. Different methods can be used for different objects. encoding algorithm, thereby further improving compression efficiency;

2. Objects are relatively independent, improving the reusability of multimedia data;

3. Allowing users to operate on individual objects, providing unprecedented Interactivity;

4. Allows flexible allocation of code rates between different objects. Important objects can be allocated more bytes, and minor objects can be allocated fewer bytes, thus It can achieve better results at low bit rates;

5. It can easily integrate natural audio and video objects and synthetic audio and video objects.

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