In their circles
1080p is a set of HDTV high-definition video modes that are characterized by 1080 horizontal lines of vertical resolution and progressive scan, meaning the image is not interlaced as is the case with the 1080i display standard. The term assumes a widescreen aspect ratio of 16:9, thus implying a resolution of 1920 × 1080 (2.1 megapixels).
HDTV may be transmitted in various varieties:
- 1080p - 1920×1080p: 2,073,600 pixels (approximately 2.1 megapixels) per frame
- 1080i - typically either:
- 1920×1080i: 1,036,800 pixels (approximately 1 megapixel) per field or 2,073,600 pixels (approximately 2.1 megapixels) per frame
- 1440×1080i: 777,600 pixels (approximately 0.8 megapixels) per field or 1,555,200 pixels (approximately 1.6 megapixels) per frame
- 720p - 1280×720p: 921,600 pixels (approximately 0.9 megapixels) per frame
When transmitted at two megapixels per frame, HDTV provides about five times as many pixels as SD (standard-definition television).