WHQL tests

Test various combinations of PanScan/Letterbox and 704/720 wide images:

• 16x9 video (704 or 720 wide), 16x9 subpicture (720 wide)
• 16x9 video (704 or 720 wide) Letterbox, 4x3 subpicture
• 16x9 video (704 or 720 wide) PanScan, 4x3 subpicture
• 4x3 video (704 or 720 wide), 4x3 subpicture