You mean video plays scrambled..
Try the Daum Pot Player.
Otherwise Open VLC player and go to Tools>Preferences. Select the ‘Video’ tab to go to video specific settings. Under the ‘Display’ group of settings, turn off the ‘Accelerated video output (Overlay)’ option. Click ‘Save’ and try playing again.
If not there are other codec settings to manipulate as well. Try these first.