Though many resolutions and designs are supported, most consumer DVD-Video discs make use of either 4:3 or anamorphic 16:9 aspect ratio MPEG-2 video, stock up  at a resolution of 720×480 (NTSC) or 720×576 (PAL) at 29.97 or 25 FPS. Audio is normally stored using the Dolby Digital (AC-3) or Digital Theater System (DTS) set ups. This  ranges from 16-bits/48 kHz to 24-bits/96 kHz system with monaural to 7.1 channel “Surround Sound” presentation, and/or MPEG-1 Layer 2. Even though the specifications for video and audio supplies adjust by worldwide region and television system, many DVD players sustain all possible formats. DVD-Video also supports attributes like menus, selectable subtitles, numerous camera angles, and various audio tracks.