I use big_buck_bunny_720p_stereo.avi. I don't think it is caused by
interlaced scanning. The raster thin lines are spaced vertically about
16 pixels I guess, macroblock size. Since the decoder copies slices
(16 pixels vertically) into video buffer each time, maybe edges are
not processed properly in case of motion. I don't see them in PC
mplayer.