Why is there clicking in my video?

If your camera is producing a clicking or humming sound while taking video, check to see if image stabilization is turned on. If it is, turn it off and see if the video continues making the noise.

sometimes the camera may attempt to 're-focus' if the scene is changing the depth as you pan or with moving subjects that allow the background to become the prime focal area. minute movements create noise that are amplified by the compression strategy of the recording itself. soft gloves/hands will produce no annoying contact noises. rough handling as you control the movement of the camera will also add noise. these are extremely sensitive devices.

if you were zooming in and out constantly, then that may have been the clicking noise.