When I go to render a movie, I get a MS screen that recommends the Miro video conversion tool to convert WebM format to MP4. When I click the link to go to the Miro download page and press the download button, Norton immediately flags the site as a known site that provides "Adware", Crapware", Malicious software. Needless to say, I will not download or install Miro. Upon further research on the Miro install, there are numerous reports of the installer essentially hijacking the browser (Chrome, Firefox, IE, etc) to install adware that cannot be easily removed. MS should remove this recommended tool due to this. Is there an alternative software that can convert WebM to MP4 that does not install malicious annoying software?