Refers to 1080p High Definition video – the highest quality of HD video currently available. The number "1080" represents 1,080 lines of vertical resolution, while the letter p stands for progressive scan. 1080p can be referred to as full HD or full high definition to differentiate it from other HD video modes. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal resolution of 1920 pixels. This creates a frame resolution of 1920×1080, or 2,073,600 pixels in total.