Zeiss Digital Camera Adapter Buyer Beware! I Shot Some Movie Clips Vertically On My Digital Camera. How Do I Rotate Them Horizontally To View Them?

I shot some movie clips vertically on my digital camera. How do I rotate them horizontally to view them? - zeiss digital camera adapter buyer beware!

I bought a Sony cyber-shot digital camera, Carl Zeiss started a year ago, and only short clips. I have some that need in the portrait shot, however, when presented in Windows Media Player, you have page views. How do I run that I did and so they can view from above?