To stabilize a clip, I analysed the movement with three trackers, and applied a camera matching the move.

It worked fine, preview was good. But after export, I encountered frames with ghosting artifacts. I have absolutely no idea on this. It is definitely not motion blur and there is neither frame blending nor optical flow applied... as I said everything was fine in the preview. Frame rate of clip and project are the same.

Ideas, anyone? Many thanks in advance!