This allows you to not only record using your camera, but also use the video/audio feed for FPV use in real-time.
Save weight by utilizing one camera and take advantage of the image quality from a Quality HD camera. The 90 deg adapter allows for a tight fit and the cable breaks out to individual pins, so you can easily configure it to any FPV transmitter connector.
Note: Some early GoPro cameras need a free firmware update from GoPro, to allow simultaneous live output and recording at the same time.
4 wire output L/R Audio and Video And ground