Chroma-Key in Sony Vegas Pro

This video was edited as part of an academic project with video footage given under the Creative Commons. The project tasked us with adding the chroma-key effect resulting in the ocean scene in the background and then we were tasked with correcting the flaws in the video as much as possible, however this video was so poorly shot, and the green screen so poorly lit, that no-one was able to correct it 100%. The flaws were syncing the audio with the video, color correction, brightness and contrast correction, and cropping out the frames of the green screen.