Scalable in-vehicle video system and signal control apparatus

A scalable in-vehicle video system, comprising:

• a communication system providing a network connection to connect with an external system;
• multiple video recorders comprising at least one of an in-vehicle multi-view camera, a webcam, or multiple body-worn video recorders for recording audiovisual contents at different locations and with different viewing angles;
• and
• a signal control apparatus, which comprises:
• a control unit connected with a built-in memory module;
• multiple interfaces, electrically connected with the control unit, wherein the multiple interfaces connect with one or more built-in sensors for generating sensing signals and connect with one or more external circuits for receiving signals generated by the one or more external circuits;
• at least one communication port electrically connected with the control unit, wherein the at least one communication port is used to connect with the communication system that connects with the external system via a network;
• and
• multiple wireless or wired connection ports connected with the multiple video recorders for receiving audiovisual files generated by the multiple video recorders, wherein the audiovisual files are stored to the built-in memory module or transmitted to the external system.