Martel's solid state DVD Police Digital In-Car Video System records directly to DVDs inside the police car, and plays the DVD on a regular dvd player. The system has no hardrives to error or crash, and the unit is so advanced it records dvd files as the unit is recording, NO Trans coding. Users can burn DVD's while driving. Records Directly onto DVD-Video Disc 8.5 Hours of recording time on one DVD Plays back on a Regular DVD Player. An ideal solution for replacing old VHS systems. The DVD PARTNER can record to the following type of disc: DVD-R, DVD+R, DVD-RW, DVD+RW.