.DV File Extension
What is a DV file?
Recorded video file created by a digital video (DV) camera; saved to the camera's DV tape and uses a standard raw format for the DV video; supported by several video editing programs.
NOTE: The ".dv" extension is also sometimes used for other video formats such as QuickTime-DV or DV-AVI. In these cases, you will need to open them with their respective software programs.