Hi - I have two playback windows open (for bike fit analysis) with different videos in each - when I right click on one image I do not get the option "send image to other video". I can save an image and then open it as an observational reference in the other video. But I cannot change the opacity. I would like to able to use the opacity slider to compare one image overlayed on a video - for example to compare before/after bike positions... is this possible?