For the installation, is pretty simple, you just need to visit the Google WebM codecs download page, click the big-blue Download WebM for IE9 button, agree to the license and the installer will take care of the rest, and as a bonus from the WebM codecs installation, you also will be able to play WebM videos in Microsoft Windows Media Player 12, since it also uses Media Foundation technology. Asking yourself where to find WebM videos? OK, this is how you do it: To uninstall the WebM codecs: Just remember that this plugin still in the preview stages, in other words not yet completed as Google has noted some known issues that need to be resolved, so it might not work perfectly on all systems. If you are planning on using IE9, this a plugin that you want to have installed in your system as more and more WebM videos are showing up around the internet. Last, keep in mind that WebM video codecs will only work with IE9 because IE8 and previous versions do not support HTML5 technology. Source The WebM Project All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.