Resolution refers to the number of pixels that make up each frame of a video, typically expressed as width by height. Common resolutions include 1080p (1920 by 1080 pixels) and 4K (3840 by 2160 pixels). Higher resolution captures finer detail, which is valuable when operators need to identify objects, read text, or assess scenes from a distance. However, higher resolutions require significantly more bandwidth and processing power for live streaming.