Video resolution refers to the number of pixels displayed on a screen, determining the clarity and sharpness of the image. It is a crucial factor in determining the quality of videos and is measured in terms of width and height.

Common video resolutions include HD (High Definition) with 1280x720 pixels, Full HD with 1920x1080 pixels, and 4K Ultra HD with 3840x2160 pixels. Higher resolutions provide more detail and clarity, resulting in a more immersive viewing experience.

Video resolution impacts file size and playback performance. Higher resolutions require more storage space and processing power. However, lower resolutions may result in pixelation and reduced image quality.

When choosing video resolution, consider the device and display capabilities, as well as the intended use and available storage and bandwidth.