Multimedia components The multimedia components are used to reference audio or video content. AudioAudio is sound that the human ear is capable of hearing.FallbackFallback content is content to be presented when multimedia objects cannot be rendered.SourceThe media source specifies the location of an audio or video resource.TrackMedia track settings specify the location of supplemental, text-based data for the referenced media, for example, subtitles or descriptions.VideoA video is a recording of moving visual images.Video posterA video poster is an image that is displayed while a video is loading.Parent topic: Component reference