Does the gimbal motors make a noise that’s picked up by the microphone? The video’s below have the same noise over it that seems very much to be coming from a gimbal motor. I really think that the Osmo will REQUIRE an external microphone if its recorded sound is needed in the video.
Maybe the Osmo has a “Quiet Mode” like the Ronin does..
Worth noting that these videos will have been taken using a Pre-Production version.. Results may vary with production versions.