To download right-click and select "Save...As". Installing software may be required to play these video files. The simplest way - clicking on this
link (opens in a new browser window or tab), placing a tick for 'K-Lite Codecs' and clicking 'Get Installer' at the bottom of the web page. Then allow it to "RUN" (or Save, then Run). Administrator rights to you computer are required for intallation.