difference in VCD's ???????

[saravan]

Hai everyone !

i have a doubt in VCD creation !!

why the VCD's created in CD-R or CD-RW are not compatible in DVD players which are not compatible to read CD-R & RW ??

then, how come it can play VCD's sold in shops ?

so, what is the difference between VCD's we create in computers and the VCD's selling out in shops ??

[Craig Tucker]

Originals are pressed, copies are burned, the burned discs have a different reflectivity wavelength than pressed discs hence the lasers on some DVD players cant read them. Many DVD players have dual lasers to overcome this problem. One for the wavelength of DVD's and original VCD's, and the other for CDR's

Craig