I downloaded videos but i get audio only, no picture

can someone please tell me what I need to do in order to get the video clips i have downloaded to display a picture also. I have audio but no picture, just lines on the screen. thanks

can someone please tell me what I need to do in order to get the video clips i have downloaded to display a picture also. I have audio but no picture, just lines on the screen.it says that i need “icm.xvid” codec tell the solution