DVD+R is capable of storing up to 8.5GB of data or four hours of video with 2.4X recording speed. In addition to four hours of DVD quality video, the media has a capacity of 16 hours of VHS-quality video and one hour of high-definition-quality video on one side of the disk. Unlike conventional DVD, double layer technology utilizes a laser with a variable focal length to encode and read the data on the disk. One focal length writes and reads to the top layers, while the other deals with the second layer, nearly doubling capacity. For recording with DVD+R double layer burners. Read compatible with DVD-ROM drives and DVD players.