This is a pet hate of mine , so indulge me for a few seconds.
This is just advertising jargon that suggest an inscribed but desirable amount of quality to the unsuspecting public. The term has been used with compact still cameras, mobile phones and other similar "movie capable" devices.
There is no minimum amount of quality that can be captured or played back on DVD. DVD is a standard that defines the compression type, maximum line resolution, frame rate and the like, nothing to do with minimum quality, the limit is the maximum quality ( IE see the difference between the same movie release on DVD and Blue Ray) . To explain, if you capture some video with the worst possible PC cam and burn that onto a DVD, that is DVD quality....