Both of these issues are arising in this video. I'm just going to have him re-film it tomorrow.there are a few methods. You could try get better lighting as making the situation brighter as some cameras go fuzzy and create noise in the image in low light, an alternate solution would be to get a video editor with noise removal in the image, noise in image is the fuzziness, but really once the video is fuzzy you can't really change it to be completely crisp clear, only other option would be get a new camera
One that is already filmed, but it doesn't matter I'm going to just have him re-film it tomorrow.is this to improve a video that has already been filmed or one that you will film? :]