Animoto Blog. The resolutions you see—p, p, p, or p—represent the number of horizontal lines a video has from top to bottom. So, a p video is made up of lines stacked one on top of another, with each line being pixels wide. For comparison, a p HD video has lines that are each 1, pixels wide, meaning that it is more than twice as sharp as a the same video at p and can be viewed on a much larger screen.
Videos at p are well-suited to smartphones and other mobile devices since they use up less data, but may appear a bit blurry on larger screens. All the odd lines or pixel rows are sent to the TV first, followed by all the even lines or pixel rows.
Since a i is interlaced, only lines or half the detail are sent every 60th of a second, with all the detail sent every 30th of a second.
The total number of pixels in a complete i signal, once both interlaced lines or rows are combined, totals 2,, However, only about 1,, pixels are sent every 60th of a second. Although the number of pixels for p or i screen display remains constant regards of screen size, the size of the screen determines the number of pixels per inch. However, that does not mean you are seeing those resolutions on your HDTV screen. Most TVs that are labeled as p TVs actually have a built-in pixel resolution of x, which is technically p.
However, they are usually advertised as p TVs. Don't get confused; these sets will all accept p and i signals. What the TV has to do is scale the incoming resolution to its built-in x pixel display resolution. As a result of scaling, the quality of the image you see on the screen depends on how well the TV's video processor works. If the TV's processor does a good job, the image will display smooth edges and have no noticeable artifacts for both p and i input sources.
A sign that a processor is not doing a good job is to look for any jagged edges on objects in the image. This will be more noticeable on incoming i signals as the TVs processor only has to scale the resolution up to p or down to p or p , but also has to perform a task called "deinterlacing".
Deinterlacing requires that the TV's processor combine the odd and even lines or pixel rows of the incoming interlaced i image into a single progressive image to be displayed every 60th of a second.
Some processors do this very well, and some don't. Don't get bogged down with all the numbers and tech terms. If these types of TVs are advertised as a "i" TV it means that while it can input a i signal, it has to scale the i image to p or p for screen display. With just a few exceptions, p TVs have been relegated to inches and smaller screen sizes. You will also find a growing number of p TVs in that screen size or smaller as well but with 4K Ultra HD TVs getting less expensive, the number of p TVs in inch and larger screen sizes are also becoming less numerous.
Actively scan device characteristics for identification. Use precise geolocation data. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Matthew Torres. Former Lifewire writer Matthew Torres is a journalist who writes about television technology, consumer support articles, and TV-related news.
Updated on April 21, Lisa Mildon. Lisa Mildon is a Lifewire writer and an IT professional with 30 years of experience. Her writing has appeared in Geekisphere and other publications. Facebook Twitter LinkedIn. Article reviewed on Jun 08, Tweet Share Email. In This Article. Overall Findings. Screen Resolution. Final Verdict. Frequently Asked Questions. Interlaced: Split into two groups of lines each. Progressive scan: Draws all pixels at once. More expensive. Most expensive.
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