The best progressive DVD players have all three, selected automatically -- 3-2 pulldown sensing from flags inthe video data as a first choice, then cadence reading when the 3-2 pulldown can be sensed by analyzing the video but the flags were wrong, and motion adaptive video mode de-interlacing. The latter mode weaves in bits of scan lines from the next field for stationary subject matter while interpolating bits of scan lines from the neighbors for moving subjects. (Not weaving the entire screen or interpolating the entire screen.)
The worst progressive DVD player I heard of, a Pioneer 434, I am told has none of these three methods. Ihaven't auditioned one but it probably does nothing more than take single fields and interpolate the intervening lines, resulting in more jaggiesand a softer picture.
The best progressive scan in TV sets includes both 3-2 pulldown sensing using cadence reading, and motion adaptive video mode, selected automatically perhaps several times a second.
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