Do webcams on the market now have to be equipped with corresponding brands of hard disk video recorders? Is it incompatible?

Do webcams on the market now have to be equipped with corresponding brands of hard disk video recorders? Webcam is the "camera" of all camera equipment, and it is the input device of a peripheral device. It can not only be equipped with a corresponding brand of hard disk video recorder, but also be used for any equipment designed according to it, which uses it as the hardware to obtain video input: monitoring, intercom, visual doorbell, even QQ ... The webcam just puts the "camera" here.

Cameras also have pixel count, digital, analog and brand. ...............................................................................................................................................................

Is it incompatible? If you need to equip the equipment with a' camera', you need to provide the supplier with information about your video recording equipment to prevent misunderstanding.

It should also be noted that there are analog and digital cameras.