Hello!
Surveillance video and computer camera are two different concepts.
Video capture card (Video?Capture?card), also known as video card, is an analog camera, VCR, LD video disc player, TV output video signal output video data or video and audio mixed data into the computer, and converted into a computer can be identified as digital data, stored in the computer, to become a video data file can be edited and processed. According to its use can be divided into broadcast video capture card, professional video capture card, civilian video capture card, so monitoring will use the capture card.
Camera (CAMERA), also known as computer camera, computer eye, electronic eye, etc., is a kind of video input device, is widely used in video conferencing, remote medical and real-time monitoring. Ordinary people can also talk and communicate with each other via webcam with image and sound. In addition, people can also use it for a variety of current popular digital video, audio and video processing.
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But the stability is not guaranteed
Camera Video Master
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If you need to record video for a long period of time, it is recommended that you buy a professional device, a cheap hard disk recorder, and a hard drive.
If you use a capture card, it's even cheaper. You just need to buy a capture card and a surveillance probe, and you'll be able to do it for about 400 bucks
But you need to have a computer.