DVD Demystified

DVD Overview
TABLE 4.4
Cont.
Examples of
Compatibility
Problems
Problem Incompatibility Explanation
151
A DVD player cannot Physical If the disc is recorded on CD-R
play a Video CD or media, the player may not be able
a Super VCD. to physically read it.
Application Even if the player can read the
disc, the manufacturer may have
chosen not to add firmware and
circuitry needed to play other
video formats.
A DVD computer Application Although the computer can read
cannot play a the data, it does not know how to
Sony PlayStation DVD. execute the application or
interpret the proprietary file
formats.
A computer cannot Application Most movies are encrypted with
play or copy some CSS. This prevents direct copying
movies. of files without an authentication
process between the decoder and
the drive. If the computer does not
have a software player and
decoder that implements CSS, it
is not able to decrypt and play
the files.
Implementation Bugs may be present in the
computer driver or player software
that prevent proper playback, or
the data may have been incorrectly
formatted on the disc.
A DVD player Application A DVD-Audio–only player cannot
cannot play certain play movies. It was not designed to
movies. read the DVD-Video files.
Implementation The disc may have been authored
or encoded in a way that is not
compliant with the DVD
specification, or the information on
the disc may be compliant with the
specification but not handled
properly by the player.
continues