What OS are you using? What software is playing the media?
Looks like it could be a compositing/screen tearing issue.
If possible, disable compositing in full screen to see if it helps.
Could also be a framerate / frequency issue.
Have you checked your display setting to verify it is at the proper/system preferred resolution/frequency? IE 1920x1080 @ 60hz not 1600x900 @59.8hz or something.