Cant render out video

Recently I've been unable to render anyfile. I started worrying when animate said that I would need quicktime installed in order to render some files, which is incorrect since I already have quicktime installed. Now whenever I try to render out a H.264 or Mov file it fails immediately with the quicktime setting even unable to match the orignal source of the video when customising the settings saying it dosent support it. Anyone have a potential fix?