<p></p>A webcam is a video camera that feeds or streams an image or video in real-time to or through a computer to a computer network, such as the Internet.<br><br>Webcams are typically small cameras that sit on a desk, attach to a user's monitor, or are built into the hardware. They can be used during a video chat session involving two or more people, with conversations that include live audio and video.<br><br>The maximum resolution of a webcam is also lower than most handheld video cameras, as higher resolutions would be reduced during transmission.<br>The lower resolution enables webcams to be relatively inexpensive compared to most video cameras, but the effect is adequate for video chat sessions. Resolution Ratio: 1920*1080; 1280*720; 640*480; 320*240<br><br>Webcams include a lens, an image sensor, support electronics, and may also include one or even two microphones for sound. The webcam has an Omni-directional microphone.<br><br>Webcam can be added to instant messaging, text chat services such as AOL Instant Messenger, and VoIP services such as Skype, one-to-one live video communication over the Internet has now reached millions of mainstream PC users worldwide.<br><br>Improved video quality has helped webcams encroach on traditional video conferencing systems. New features such as automatic lighting controls, real-time enhancements (retouching, wrinkle-smoothing, and vertical stretch), automatic face tracking and autofocus, assist users by providing substantial ease-of-use, further increasing the popularity of webcams.<br>