DVDs can be very particular about which DVD players they work in. DVD players are often coded to the region they’re produced in, as are DVDs. These codes have to match. For instance, DVDs produced for the United States must be played on DVD players also produced for the United States. Those same DVDs would not display on players produced for China or Europe. You can get around this restriction by making a DVD region-free. Because the region code is physically burned into the DVD, however, this process requires you to create a new DVD without regional restrictions.
