Take the 2-minute tour ×  One of my DVD plays jagged when
objects moves fast in the picture, I want to know what is this
effect called and hope someone could give a solution. I have
VLC. It is like this:   share|improve this question add comment
3 Answers  up vote 5 down vote accepted  This happens with
interlaced video. Interlaced video is drawn to the screen in two
passes, first the odd lines from top to bottom, then the even
lines from bottom to top.  This is a legacy thing inherited from
the days of good ol' CRT tubes when the dots on the screen was
drawn using a beam; and to optimize the physical limitations of
that the beam could not be all places at once this method where
used together with phosphoric layer to reduce flicker.  With
this you end up with two half frames (odd and even lines). Now,
this is also the way video is captured on many video cameras.
The exception is progressive recording where a single frame is
recorded at once, like with analogue film cameras.  The problem
you see happens when