Symptom
When watching a movie from a DVD-Video disc, the sound stutters, the movie plays in slow motion (two or three frames per second), or it completely stops playing.
Solution
1. Make sure you have installed the latest version of the Mac OS and Apple DVD Player software.
2. If you are using latest version of Apple DVD Player, use the tips in article 58383: "Apple DVD Player: Troubleshooting Video Issues" to eliminate any other possible causes.
If the DVD-Video title uses "Concealment Motion Vector" (CMV) encoding, a type of encoding used in some countries, including Japan, the video will appear to play very slowly in Apple DVD Player. Download and install
Apple DVD Player 2.7 or later to correct this issue.