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We’ll start with the abbreviations — 1080i is short for 1080 interlaced scan, while 1080p is short for progressive scan. The difference between these two formats is how they’re displayed on your...
1080i is a term used in high-definition television (HDTV) and video display technology. It means a video mode with 1080 lines of vertical resolution. The "i" stands for interlaced scanning method. This format was once a standard in HDTV. It was particularly used for broadcast television.
Both 1080p and 1080i have 1080 horizontal lines of vertical resolution which with a widescreen aspect ratio of 16:9 results in a resolution of 1920 × 1080 pixels (2.1 megapixels). It is not true that 1080i has a lower vertical resolution than 1080p.
1080i and 1080p are higher resolutions than 720, but the two are not the same. You might want to consider 1080p because of the more efficient way it projects images onto the screen.
The “i” in 1080i stands for interlaced scan, and the “p” in 1080p stands for progressive scan. These refer to two distinct methods of producing an image on a screen at 1920 x 1080 resolution. So, if both resolutions have 2,073,600 total pixels, what’s the difference?
720p and 1080i are both used in TV broadcasting, but what's the difference? Find out what these numbers mean in relation to what you see on the screen.
1080i represents 1920 pixels displayed across a screen horizontally and 1080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines (pixel rows), which are, in turn, displayed alternately.
1080i - Interlaced Display. 1080i represents 1,080 lines of resolution scanned in alternate fields consisting of 540 lines each. 1080i is the most commonly used HDTV format, and has been adopted by most television broadcast, cable, and satellite outlets as their HDTV broadcast standard.
1080i alternates lines to reduce streaming bandwidth, while 1080p shows all lines at once for sharper images. 1080p is already in a progressive format, so no deinterlacing is needed. Deinterlace 1080i when playing it on progressive displays for a smoother viewing experience.
Progressive (1080p) video is considered better than interlaced (1080i), but it's not always clear why; here's what's actually happening on your TV screen.