Glossary: DVD Basics
1x, 2x, 4x DVD DVD recording or playback speed in relation to spindle
speed of the DVD on video playback
1x = 1.385 MB/s
2x = 2.77 MB/s
2.4x = 3.324 MB/s (only DVD+R/+RW)
4x = 5.54 MB/s ^^^^^^^^^^^^^^^
8x = 11.08 MB/s