This is very slow, but it tries to do the same than I would if I needed
to deinterlace a frame by hand... I would match two lines and
interpolate between those lines to fake a better resolution ... This is
....***....
----------- <-- missing line
***........
^
|
+--- match
Result of interpolation
....***....
..***......
***........
better (and slower) than mplayer -vop pp=ci but I don't know if it is
better then "mplayer -vop lavcdeint", but it might be as it is fully
motion-compensating... Please test it and ignore just for a moment that
it's so slow... If it really works better then lavcdeint (which produces
stairstepping-artefacts sometimes...) I will make it faster!
