How to use video surveillance video surveillance
Forget to tell you, a decoder card (4 Road Dahua) 1200 yuan, 300 yuan conversion interface.
Then a video server, just fine ... ... video line above to be a three links
Whether it is Hai Kang, Dahua, Degas or Kang silver video capture card, their function is video capture, and then? Compression, otherwise, so much of the data stream burned the CPU, they are only responsible for the collection, that is, you can now achieve the function - video. To achieve the function you say is also very simple, according to your idea, have to buy a video decoder card, because the acquisition card data collected after compression can not communicate with the qq software (protocol is different), through the decoder card , The compressed data is reduced to analog (or digital) signal, through the USB interface can achieve what you said the function.
