A virus for sure started the problem.
DSLR cameras such as Canon produce a high resolution image. say around 21 mega pixels, there is no electronic means to transfer that amount of data at even 25 fps so what they do is skip some of the lines alternatively to bring it down to around 2 mp. In a slow moving sequence that is not seen however if you venture beyond talking heads then you will see moire and allaising problems and also rolling shutter jellow. With all types of camera the only solution is to keep the camera stable. My system can hold .005 deg. With a Wookgong M it is theoretically impossible to go beyond .05 with a slight lag, which is good enough for what most people will ever want. With post stab and camera stab. fixing the final output. What happens with certain Cmos cameras is the image stabilising system becomes confused by the vibration and then the image is displaced in the wrong direction. A lot of distortion in a GoPro comes from the very wide angle lens which is not linear. There is even a software filter to fix that.that would be the first mac virus I have heard of. Sorry to hear that. And i dont think the Gopro 1 does 120fps. The gopro 2 does but in some unheard of crappy resolution. Isn't rolling shutter what causes the jello? In short CMOS sensors read from top to bottom( or other way around, cant remember) really fast. But unlike a CCD sensor that virtually captures the whole frame instantly, CMOS sensors will show any horizontal movement that moves faster than the sensor can grab the whole frame in before the movement. So by the time your scan line is at the bottom of the sensor, if your object has moved, you will see this as a horizontal line. Jello is basically the same thing only in a high enough frequency that it is "sine-waving" back and forth making things look jiggly.
From my experience, the jello effect comes from the camera being too loose on it's mount, or the mount rubbers are too soft. Please post some pics of your gimbal and how you have mounted the cam to the heli. It can probably be caused if the props aren't balanced as well, and the whole craft vibrates.
I have just tried my first video with the gopro mounted directly to the heli with no gimbal and there is no jello effect. It's just bolted straight to the frame.
Show us some pics and we can probably sort it out!
Gunter.
That gopro mount might be the problem. Try and move the camera and see if there's any play between the camera and mount. On all of my mounts, there is a bit of play. Try either a tripod mount with a screw from the top, or to start with, wedge a bit of cardboard between the camera mount and the other side, which is stuck to the frame. Ie hold the cardboard between the mounts as you are clicking them together.
Cheers, Gunter.
I would try to add some mass to the camera base plate in the first instance. You can get quite good results with the camera mounted solidly to the frame and that should get rid of those artifacts. You will of course not be able to correct the models pitch and roll accept though post stabilisation which can remove some of that. Do you want to have fun or produce top quality production work. If it's fun then mount it solidly to the frame. Some airframes do have a natural frequency oscillation that is always there.