On this page, you’ll learn about pixel, including its definition, differences between pixel and resolution, and how to edit pixels.
Pixel is short for Picture Element, referring to the smallest unit of a graphic image or display.
Graphics monitors present pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected.
The number of bits representing each pixel determines how many colors or shades of gray can be displayed. For example, in 8-bit color mode, the color monitor uses 8 bits for each pixel, making it possible to display 2 to the 8th power (256) colors or shades of gray.
On color monitors, each pixel is composed of three dots - a red, a blue, and a green one. Ideally, the three dots should all converge at the same point, but all monitors have some convergence error that can make color pixels appear fuzzy.
The quality of a display system largely depends on its resolution, how many pixels it can display, and how many bits are used to represent each pixel. VGA systems display 640 by 480, or about 300,000 pixels. In contrast, SVGA systems display 800 by 600, or 480,000 pixels. True Color systems use 24 bits per pixel, allowing them to display more than 16 million different colors.
No, pixel and resolution are not the same, but they are closely related concepts in digital images and videos.
A pixel is the smallest individual unit of a digital image or video. Each pixel carries color information, usually represented by RGB (Red, Green, Blue) values.
Resolution refers to the size of the pixels, more specifically, the number of pixels in an image or video and it is usually expressed as width × height (e.g., 1920x1080).
The total number of pixels in a video depends on its resolution and the number of frames it contains. Here is a formula to calculate the total number of pixels in your video:
Total Pixels = (Resolution Width × Resolution Height) × Frame Rate × Duration (seconds).
For example, a 10-second 1080p video at 30 frames per second (fps): Total Pixels = (1920 × 1080) × 30 × 10 = 622,080,000 pixels
Yes, you can change the pixels of a video or image by altering its resolution. Here are some popular tools for resizing the pixels of images and videos:
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