What format does mepg mepg 1 mepg 2 mepg 4 refer to?

MPEG-1 is used for the approximate rate of digital storage** image and sound coding, and strives to store Video on CD-ROM discs, that is, Video-CD; MPEG-2 is a high-speed coding standard for high-quality picture and sound*** and HDTV; MPEG-4 is a narrow-bandwidth audiovisual codec used for network audiovisual communication; MPEG-7 is not encoding, but a multi-content description interface, describing features to facilitate content-based retrieval; MPEG-21 is also not a code, but a multi-frame, trying to harmonize various multi-technology standards and establish a standardized multi-framework to support a variety of applications.

There are three main differences between MPEG-1, MPEG-2, and MPEG-4.

1. The formulation time is different.

MPEG 1: Formulated in 1992.

MPEG 2: Formulated in 1994.

MPEG 4: Formulated in 1998.

2. The compression standards are different.

3. The application is different.

The differences between MPEG1, MPEG2, and MPEG4 are different formulation times, different applications, and different compression standards.

First, the formulation time is different.

1. MPEG 1: formulated in 1992.

2. MPEG 2: formulated in 1994.

3. MPEG 4: formulated in 1998.

Second, the application is different.

Third, the compression standards are different.

He compresses differently, without a 3

MPEG1 is a VCD, MPEG2 is ***, MPEG4 is a highly compressed format, the file is smaller than MPEG1 and MPEG2, and the image is clear.

I'll explain it to you in layman's terms.

mpg is just the suffix of the ** file, and the suffix encoded in mpeg1 and mpeg2 are mpg; MPEG1 contains VCD and MPEG1, and MPEG2 contains *** and MPEG2 code stream used in TV broadcasts.

is the suffix of an audio file, and its encoding is MPEG-1 Audio Layer 3

MPEG4 is a kind of encoding, including xvid, divx, Microsoft's MS MPEG4 encoding, MP4 is a hardware device, that is, a handheld device that is played in the hand, but it's ** files encoded in MPEG4, so that consumers mistakenly think that MPG4 is MP4, which is confusing.

Generally, it is MPG-1, which is in VCD format.

1.If you don't use tools, you can look at the volume of **, MPEG2 is the largest, a 100-minute ** will occupy about 4G space, and MPEG1 format ** will occupy less than 1G space. The smallest is the MP4 format, which is much smaller than MPEG2 and MPEG1 (I won't calculate how much smaller it is).

Take watching a 90-minute movie as an example, the volume of more than 2G is generally MPEG2, the volume below 1G should be MPEG1, and the 200-400M should be MP4 format.

MPEG3 is abbreviated as ***.

MPEG stands for Moving Picture Experts Group.