Are mpeg4 and mp4 formats the same?

The mpeg4 and mp4 formats are different; mpeg4 is a coding standard, mainly used for online streaming, CDs, voice transmission, and television broadcasts, etc., while mp4 is a file format, which is a set of audio and video information. compression coding standard.

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There is a difference between MPEG4 and MP4, the specific differences are as follows:

1. MP4 is a file format, while mpeg4 is a coding standard. The two are not the same concept. It can be understood that mp4 is an audio and video file that supports the mpeg4 standard, and there are many file formats that support the mpeg4 standard, mp4 and avi being one of them.

2. MP4 is a set of compression coding standards for audio and video information. It is established by the "Moving Picture Experts Group" (MPEG) under the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). The first version was adopted in October 1998, and the second version was adopted in December 1999.

3. The main uses of the MPEG-4 format are online streaming, optical discs, voice transmission (video phone calls), and television broadcasts.

4. MPEG-4 includes most of the functions of MPEG-1 and MPEG-2 and the advantages of other formats, and adds and expands support for Virtual Reality Modeling Language (VRML) , object-oriented composite files (including sound effects, video and VRML objects), as well as digital rights management (DRM) and other interactive functions.

Extended information:

Features of MPEG-4

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

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

3. Allows users to operate on a single object, providing unprecedented interactivity;

4. Allows users to operate on different objects The code rate can be flexibly allocated between objects. More bytes can be allocated to important objects, and fewer bytes can be allocated to minor objects, so that better results can be obtained at low code rates;

5. Natural audio and video objects and synthetic audio and video objects can be easily integrated.

MP4 (also called MPEG-4) is a type of MPEG format and a compression method for moving images. This compression provides higher image quality with smaller files and is currently one of the most popular video file formats, especially on the web.

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