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A simple Webcam setup consists of a Digital Camera attached to your computer, usually through the USB port. The camera part of the Webcam setup is just a digital camera -- nothing out of the ordinary so far. The "Webcam" nature of the camera derives from the software. Webcam software takes a frame from the digital camera at a preset interval (for example, the software might grab a still image from the camera once every 30 seconds) and transfers it to another location for viewing.

If you're interested in using your Webcam for streaming video, you'll want a Webcam system with a high frame rate. The frame rate indicates the number of pictures the software can grab and transfer in one second. For streaming video, you need a minimum rate of at least 15 frames per second (fps), and 30 fps is optimal. To achieve high frame rates, you must necessarily have a high-speed internet connection.

Once it captures a frame, the software broadcasts the image over your Internet connection. There are several broadcast methods. Using the most common method, the software turns that image into a JPEG (compressed) file and uploads it to a web server using File Transfer Protocol (FTP). You can easily place a JPEG image onto any web page in this manner and post your webcam images on the internet.

If you don't have your own Web server or web site, you can also use your web cam to send a video email. First, launch the software that comes with the camera. Depending on the model, the process of e-mailing and recording your video messages may vary. Press Start or Record to begin the video message. Click Stop and then preview the video. You can then click E-mail or Send, which automatically opens your default e-mail program.

When sending a video e-mail, the longer the video message recorded, the bigger the attachment will be, so make sure the recipient's computer can handle the size. The recipient of the e-mail does not need special software to see your video message; they simply choose to open the attachment and the mini movie will play.

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