Where can i get a MP4 Codec and how do i install it in Windows Movie. I have Vista Ultimate 6. Windows Movie Maker , i want to edit my Go. Pro videos from my Hero 3, which is in MP4 format , Movie Maker says its not supported when i try to import the video, it says to get codecs, but it. MP4s. It says it supports MP4s right in this Microsoft link. NOT have the codec for MP4s, so i am confused, and it does not auto download one like everything says it should, and no one seems to ever post a link. This is the error i get when trying to import a MP4. IT/windows/windows-movie-maker-windows-vista/large/windows-movie-maker-8.jpg' alt='Codec S For Windows Movie Maker' title='Codec S For Windows Movie Maker' />Download Windows Live Movie Maker 16. Windows Movie Maker. The KLite Codec Pack is a free software bundle for high quality playback of all your music and video files. It is easy to use, but also very flexible with many options. The file C UsersJimsDocumentsMotorcycle Racing Riding PicsHelmet Cam Videos9 6 2. Clay PeakGOPR0. 00. 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. Windows Movie Maker, and then try to import the file again. My Questions are Were can i get the MP4 Codec i need to edit my Go. Pro 1. 08. 0 HD videos in Windows Movie Maker version 6. Go. Pros Movie Maker , its kind of a pain to use, or why wont my Windows Movie Maker accept MP4 videos to edit if everything. How do i get the codecs installed. How To Remove Limewire From Windows Vista more. I need direct links to the codec needed, please, or exact info on how to actually fix Movie Maker so it accepts MP4s, and info on how to actually get the codecs installed if i need them.