480p is the shorthand name for a video mode. The p stands for progressive scan, i.e. non-interlaced, while the 480 denotes a vertical resolution of 480 lines, usually with a horizontal resolution of 854 pixels and a 16:9 aspect ratio on high-definition television (HDTV), or 640 pixels and 4:3 aspect ratio on standard-definition television (SDTV).