Providing double the storage capacity of a standard DVD-Recordable disc, DVD+R Double Layer and DVD-R Dual Layer discs can hold up to 8.5GB or approximately 4 hours of DVD-quality video on a single disc. Compatible with double-layer writers from leading manufacturers, these discs are ideal for archiving home movies. DVD+R DL and DVD-R DL are one-time record discs, ensuring that your movies, video clips or other data will not be erased. While requiring a dual-layer recorder, these discs are compatible for playback with most standard DVD video players and DVD-ROM drives.