The sound, video, animation and interactive video in 3D is what is called multimedia. Some multimedia, called sequence, start playback as soon as you access the website. Others require pre-download the media file to your computer. The media often require that your browser use an add-on.
Plugins: Plug-ins are small software programs that extend the capabilities of its browser, allowing you play sound and video clips or do other functions such as automatically decompress files you download. Supplements may be included with your browser software or can be downloaded from websites. Some plug-ins enable the sequencing of audio or video, allowing you to listen or watch a multimedia file before it has been completely downloaded to your computer.
