What exactly does VCD mean, what does VCD mean

What is CDCD is the abbreviation of Compact Disc in English, which means laser record, and its diameter is 12 cm. Laser discs (LDs) and CDs are often referred to collectively as compact discs. The main differences between them are:

The image part of the laser disc is recorded in analog mode, and its sound part is recorded in analog or mixed analog and digital mode; CD-type sound and images are all recorded digitally. In terms of function, CD is mainly used to record and play back sound, while LD is mainly used to record and play back images.

What is VCD

VCD is the abbreviation of English video compact disc, which translates into Chinese"Compressed platter", actually, it is"Discs"。It is the same size as an ordinary CD, and there is no difference in structure, but it is stored on film and television programs, so it is commonly called"Video discs", and because it is smaller than the LD video disc used on the laser disc player, it is also called"Small DVD"。Its audio** quality is better than that of a videotape, but slightly worse than that of a large disc.

What is ***

The full name of the English is Digital Video Disk, that is, digital ** disc or digital video disk, which uses MPEG2 compression technology to store images. It is also known as Digital Versatile Disk, which is a digital multi-purpose disc, which integrates computer technology, optical recording technology and film and television technology, etc., and its purpose is to meet people's needs for large storage capacity and high-performance storage. CD-ROM has not only been widely used in the field of audio technology, but also will drive the development of publishing, broadcasting, communications, www and other industries.

It is very versatile, as can be seen in the five specifications it sets:

ROM - a computer software read-only CD-ROM that is used similarly to a CD ROM;

Video - home audio and video discs, similar to LD or Video CD;

audio - **platter, similar to **cd;

r (or *** write once) - *** written once, similar to cd r;

RAM (or *** rewritable) – a disc that can be read and written multiple times, similar to MO.

VCD is the abbreviation of Video Compact Disc, translated as "** compressed disc", it is the same size as ordinary CD, there is no difference in structure, using MPEG1 compression method to store 74 minutes of live ** image and sound signal on a disc with a diameter of 12cm, so it is commonly known as "video disc", and because it is smaller than the LD video disc used on the laser disc player, so it is also called"Small DVDIts audio** quality is better than that of a videotape, but slightly worse than that of a large disc. VCD discs can be either directly on a VCD machine or on a computer equipped with an optical drive.

VCD is the meaning of video and audio disc, a disc from a long time ago.