Searching for a is a common request for users who find their videos recorded in the wrong orientation . However, the software itself is entirely free for its core functions, and most "keys" found online are either for premium versions with batch features or are unnecessary for basic use. Do You Really Need an Activation Key?
For Windows, you'll need the Windows Movie Maker app. It's a free download and will let you upload video clips to rotate and flip. Windows Movie Maker Adobe Express free video flip and rotate activation key