Video CD

Video CD is the frequently used VCD and SVCD. DVD is not belonged to the CD format. The feature of VCD Optical track: There is one session with multiple Optical tracks. It is set with directory structures, which is VCD file system. The file system is on the first Optical track. Then, each video will have one corresponding optical track. In the standard VCD, music material can be stored either by mixed with flash or static image or store as the VCD format.

The above diagram is the structure of a VCD. It has one session with three Optic tracks. The first track is the VCD file system. The second and third is the content of VCD program. This is a typical structure; the second picture shows the rights declaration, company logo and so on. The third track is the content of the whole story. Of course, the two parts can be edited to be one track. But there would be reputation of the logo, version rights. The two track style can make sure that the content of story shall be played once during the process of reviewing. VCD is set with directory structure that can be displayed on computer. As the picture shows the name of this VCD is "Video CD", and four file directory. One thing needs to pay attention to is that VCD composed by different software shall have different directory structure but they must be tally with the ISO9660 standard.

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