A helmet- or head-mounted video recording system is provided for mounting on a piece of head gear such as a head-protective helmet. The system includes a camera module attachable to the head gear, including a first video camera integrated into the camera module for generating a video signal. A recording module is removably attachable to the head gear and is adapted to receive the video signal and store data representative of the video signal. A power supply module is removably attachable to the head gear and is electrically connectable to the camera module and the recording module.