GoPro FPV Video Cables

ReadyMadeRc has a couple of pre-made cables for attaching a GoPro to an FPV transmitter.

X468 Flame Gear Camera Mt For GoPro

Atlanta Hobby is carrying this nice looking underbody multicopter GoPro mount.  250 grams, roll and tilt.  Uses HS-55 sized servos. $110.

Layer Lens -- GoPro lens cover

This looks like it might be quite useful!  The Layer Lens is a lightweight cover that fits over the GoPro lens.  Here's the GoPro Lens Replacement Kit.

GoPro FPV Setup (cables)

Output cable is: 2.5mm 4-pole jack
From inside, connections are: ground, video, audio, unused
yellow: video with shield (ground) , white: audio with shield (ground)
connecting to servo plug:

• two grounds together, to servo black ("ground")
• video, to white/bronw ("signal")
• audio: to red ("power")

Two versions of off-the-shelf cables from ReadyMadeRC:

• generic a/v
• immersionRC specific

Nice tutorial from RCTestFlight: