I tried to import a video onto Windows Movie Maker and this is the error box I get: "The file C:\Users\owner\Desktop\TakeOut.mp4 cannot be imported because the codec required to play the file is not installed on your computer. If you have already tried to download and install the codec, close and restart Windows Movie Maker, and then try to import the file again."
What is a "Codec", what "Codec" do I need to install, and where can I install it at?