Help with the VSE

I’m editing a video for my school and when I import the video to Blender (.mts), the video appears as expected but the sound clip is shortened, it is longer than the actual video clip. Any idea why is this happening and how to fix this?

Find the correct frame rate of the video (open it in a media player and check info for clip) then match that in the blender project settings. Before you add the video!