An interactive option screen in video DVD, showing thumbnail images of various chapters in a video title. Users can select a particular chapter thumbnail, and start playback directly.

MP3 (MPEG-1 audio layer 3) is a compressed audio file format. Files are recognized by their file extension .mp3 or .MP3.

MPEG is an international standard for compressing digital video/audio content. In general, MPEG-1 is used for VCD and music. MPEG-2 is used for SVCD and DVD-Video. MPEG-4 is used for different forms of digital videos, such as DivX® films.