Free Video Rotator is a free app to rotate videos 90 degrees when taken with the wrong orientation.

Free Video Rotator has a relatively easy to use interface with a "user guide" provided in large text to point you in the right direction. There is also a link to their website called "How to use the software, " but that has the same information that's already in front of you.

It promises to open and rotate most popular movie formats including AVI, MP4, FLV, MOV, MKV

To open your video, you can Open a file, Browse, or Find Target. Find Target was a little unclear when we tried it because the app attempted to open our DVD drive. It took us a minute to realize this is the output folder. Your best bet is to use Open File or Browse. We found Open File shows your Video folder right away, so we recommend that.

Once you have your video open, click on Clockwise Rotation as many times as needed. If the video is upside down, for example, two clicks of the Clockwise Rotation will restore it right-side up. Most videos shot sideways will only need one click. Next up, click start and wait for it to process. In our very short test video, it took a minute to rotate a small, 6-second video. You will be notified that the file has completed and you might not be able to close that window and will need to force the app to quit by right-clicking on the icon in your system tray. On a second attempt, our video wasn't saved when we forced the app closed.

Our output test video was rotated but not the orientation.

While Free Video Rotator has a few bugs, they are easily overlooked when you need to rotate that video. We'd like to see a portable version as this is an app most people would use infrequently.