Rogue wrote:Sorry if its a bit of a thread hijack but I've been having real issues trying to get rid of that vibration. I've don't expect pro footage and only really started having a crack at video this summer so just learning but a lot of the stuff I've shot is barely passable as amateur footage in that high vibration phase of take off or landing. I only seemed to have limited success mounting foam in between the airframe and the mount but still not awesome and it deters me from putting much effort in getting footage. I just have a go pro 3+ and a 4, someone mentioned I'd be better off investing in two newer 5, 6's or some other camera with better stabilization but have been kind of discouraged I guess messing around with what I have. Any suggestions from guys that know about this stuff would be appreciated.
Rogue, first off I think your GoPro HERO 3+/4 are perfectly adequate. Don't bother upgrading at this point. I don't think digital image stabilization is going to help much on high frequency vibration like you get through a fuselage tube. That's my guess, anyway. I might be wrong. Physical stabilization is always superior.
If you're going for cockpit footage, I like to mount my using a RAM mount. That doesn't narrow it down much, but they have so many options. Mine was an old yoke mount to mount your PDA ("smartphones/tablets" circa 2002 for the kids) on the actual control column. I separated the portion that held the PDA, and the clamp just works as a general tube clamp for overhead tubes in Cubs, Scouts, etc. It has a ball arm on it that I then connect a socket arm, and finally to a ball mount for the camera. A picture is worth a thousand words, from this article:
https://backcountrypilot.org/photo-and- ... hoot-video.

I bought the 1/4-20 gopro mount and swapped out the standard gopro fork-style mount. That makes whatever mounting system you go with more compatible with other small cameras that use the standard 1/4-20 mount.
I shimmed the tube clamp with some viton, but you could use anything that will absorb or dampen vibration.
If you're using an ND filter to blur your prop, make sure it's just enough and not stopping down your exposure too much. As the GoPro sensor scan rate goes down (blurring the prop), its susceptibility to vibration induced effects goes up.