OIPlayer inits and controls the video- or audioplayer made by modern browsers with the html5 video- or audiotag. It was developed for the Open Images Platform. It features a fallback mechanism and enables the use of three players in a generic way. It sifts through the sources inside the media tag to find a suitable player, replaces the mediatag with itself and enables some generic controls. Is supports the html5 media-tag itself, the Java applet Cortado for the ogg media format (ogv, oga) for browsers that have Java but don’t support the html5 media-tags and a Flash player, in this case FlowPlayer for (mp4, h.264, flv).