This Mute video tool is used to mute a video 90 degrees clockwise or counterclockwise.
Click on the Rotate video button to use the tool. A picker will be shown to select the input video.
In this screen, you can click on Rotate left or Rotate right button to rotate the video 90 degrees counterclockwise or clockwise accordingly.
Click on the Save video button to process the rotation. You can choose the output format (MP4 or WMV) and quality in the dialog. Then click on the Make movie button.
An other picker will be shown to select where to save the ouput video.
After the processing is complete, you can preview the output result.