What does DVD-R mean?
Some say DVD stands for Digital Versatile Disc. Others say DVD stands for Digital Video Disc. • Why can you record more information on a DVD-R disc than on a CD-R disc? The extra capacity of a DVD-R disc comes from smaller track pitch and smaller data marks (pits). The track pitch on a 3.95 GB DVD-R disc is 0.8 microns, one-half the track pitch of a CD-R. The track pitch on a 4.7 GB disc is 0.74 microns. Hardware changes in the recorders allow the creation of data marks approximately one-half the size of those made on CD-R media (0.40 microns versus 0.834 microns). The recording laser’s wavelength and focusing lens’ numerical aperture were changed. Because of this, a CD-R/CD-RW drive cannot be used to write DVD-R media. Additionally, DVD-R substrates are injection molded to one-half the thickness of a CD-R. Two DVD-R substrates are bonded together creating multiple recording surfaces. • What recording speed does DVD-R media support? Data is written to a DVD-R disc at 11.08 megabits per
The DVDs we sell at Mr. Video are burned DVD vs stamped DVD. When you rent a movie, these DVD are replicated by the 1000’s. This process of replicating guarantees it will play on all DVD players. There are two formats for burning DVDs: DVD-R and DVD+R, pronounced “DVD dash R” versus “DVD plus R”, right now in the DVD world, there is a debate going on regarding what format to be standard. We at Mr. Video believe the DVD-R format will reign the winner. Remember when VHS and Beta had the same war in the 80’s. We believe this is going on right now. DVD player manufactures are changing technology to play either format, however, occasionally players will not play the ‘dash R’ format. If you want to learn more about this, go to the following link: http://www.customflix.com/Customer/Compatibility.jsp If you have problems playing your DVD, the link above has a list of DVD players by make and model numbers that will play DVD-R. The number of machines that DON’T play the DVDs is diminishing. If y
