Video Editing (Removal of Black Frame from video)

Hello, i have around 16 videos of various length, and they were taken with a video camera that created a black frame around the videos (note, this is not the normal black frame of the video player, but another black frame) Anyways, your job is to remove the actual black frame from all videos. Additionally, below are a few other small tasks: -join 2 videos -cut a video clip from another one -replacement of the sound in 2 videos(if you can do the voice over yourself would be a plus) Thanks jo