distorted avi playback using win32 codecs in WO mode at 240 or 720 width

[anonymous]

When playing an avi requiring win32 codec (IV50, I263) in WO mode, output is distorted if line width is 240 or 720, but playing properly if line width is 320. Possibly WO is only cooperating properly with win32 codecs, if line width is a multiple of 32 (NVidia graphics chipset here). Btw, playback of XVID encoded avi in WO mode at widths of 240, 320 or 720 is ok.