Difference Between 1080i and 720p (With Table)

The resolution of a pc screen or projector is critical for digital television. Because there are a maximum range of unique pixels that may be shown in each dimension. Because there are more dots in an image, it has a higher resolution and overall quality for any given screen size. Although 1080i and 720p are both in the same resolution family, their features and applications are rather different.

1080i vs 720p

The main difference between 1080i and 720p is that 1080i is a high-definition tv and digital image rate and progressive scan type combo. 720p, sometimes known as full-screen HDTV, is a revolutionary greater tv broadcast-type having 720 black lines and even a 16:9 ratio (AR). They serve a purpose in terms of resolution.

In 1080i, the letter I refer to bidirectional reading. It refers to methods for presenting an area of the image with a 1920 x 1080 pixel resolution (2,073,600 total pixels). These lines are positioned on the screen such that each pass covers 540 lines while keeping their resolution value.

A progressive HDTV signal with 720 horizontal lines is used in the 720p transmission format. On the screen, it has a dimension of 1280 x 720 pixels. The visual quality of a display improves as the amount of particles increases. The width x height format of a display’s resolution defines how many pixels it contains.

Comparison Table Between 1080i and 720p

Parameters of Comparison1080i720p
DefinitionIt’s a phrase used to refer to a type of image enhancement technology that works with high-resolution photos. These strategies are extensively used in streaming video to offer a better visual result to viewers.Widescreen HDTV is a high-definition television transmission format with 720 horizontal lines and a 16:9 aspect ratio that is known as Widescreen HDTV.
ResolutionIt features a 1920 x 1080 pixel screen with a width and height of 1920 x 1080 pixels, respectively. There are 1080 rows of pixels from top to bottom on a TV with a resolution of 1080 pixels.It has a widescreen aspect ratio with a horizontal resolution of 1280 pixels and a vertical resolution of 720 pixels.
Scan TypeThe 1080i picture is an interlaced scan type, meaning that each frame of 1080 lines is produced in two passes.It’s a progressive scan, which means the entire image is refreshed and updated with each cycle.
Picture QualityThe visual quality is sufficient for slow-moving stuff, but not ideal for fast-moving items.It has a higher quality because it has an HDTV resolution. A 720p television has double the resolution of an analogue television.
ExistenceOn current gadgets and televisions, whether LED TVs or UHD 4K TVs, it is no longer used.Videos in the 720p format are no longer considered high-definition. Any video with a resolution less than 1080p is referred to as Standard Definition.

What is 1080i?

Two sets of pixels are presented in the 1080 interlaced format, sequentially. In a 1080 interlaced format, one picture is distributed over the even lines of a pixel field, while the second image is distributed over the odd lines of images.

This implies that each frame of 1080 lines is displayed twice when a 1080i image is supplied as an interlaced scan picture. All of the odd lines numbered 1 through 1079, are drawn first. Then all the equal borders were drawn from 2 to 1080. A field is a name given to each of these passes, and one frame of 1080 lines is made up of two fields.

As a result, while viewing an interlaced image, our eyes take a little longer to see the entire frame. This technique helps to create the appearance of motion and can assist to alleviate issues like screen flicker.

Only 540 lines are supplied every 60th of a second in a 1080i format, with the remainder of the information broadcast every 30th second. The results of 1080 interlaced methods might differ depending on a number of things. With a smaller television, the differences between various scan-type formats can be minimized. It’s also important to think about how service providers manage data compression.

What is 720p?

It’s made up of 720 rows of 1,280 pixels in a single image. For example, 720 horizontal lines or pixel rows are displayed in sequence on a TV or other display device, or one line or row is delivered after the other.

It was the industry’s first HDTV resolution format. A 720p television, on the other hand, has double the resolution of a standard television. The complete image is updated on a timely basis once every 60th of a second or twice every 30th of a second. The total amount of pixels displayed on the complete 720p screen surface is 921,600, or little less than 1 megapixel in digital camera parlance.

Several criteria determine are several criteria that determine the number of hours in a video.   The duration of a 720p video is determined by several factors, including video compression, camera bitrate, and video frame rate. On average, a 32 GB memory card can hold 3 to 5 hours of 720p video.

The letter “ p ” for continuous scanning, is often known as non-interlaced video. When broadcast at 60 frames per second, 720p offers the highest temporal resolution achievable under the ATSC and DVB standards. It features a 16:9 widescreen aspect ratio, implying a 1280 x 720-pixel resolution.

Main Differences Between 1080i and 720p

  1. For the two resolutions, the display technology kinds are different. 1080i refers to the interlaced scan type, which is denoted by the letter i. However, 720p stands for progressive scan type, which is denoted by the letter p.
  2. When multiplied, 1080i has a resolution of 19201080 pixels, which equals two million pixels, but 720p has a resolution of 1280720 pixels, which equals less than one million pixels.
  3. It is broken into 2 groups of 540 characters per each 1080 progressive style, and it displays all images around the same time in 720p scan type.
  4. 1080i refers to a screen with 1080 horizontal lines, whereas 720p refers to a screen with 720 horizontal lines.
  5. Most television broadcast, cable, and satellite providers have chosen 1080i as the HDTV broadcast standard. In high-definition (HD) video quality, 720p is employed.


The two-screen resolutions of 1080i and 720p each have their own HDTV applications and usage. 1080i is an interlaced format with a resolution of 1920 x 1080 pixels. 720p is a progressive format with a resolution of 1280×720 pixels. The biggest difference between the two is their screen resolution and scan type format, which leads to various applications.


  1. https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9193/91930W/Ultra-thin-wafer-level-camera-with-720p-resolution-using-micro/10.1117/12.2061006.short
  2. https://dl.acm.org/doi/abs/10.1145/1854153.1854196