Erikstormtrooper said:
About the shake on the subtitles: If the picture element was shaking when the subtitles were originally added, then you've got 2 elements shaking independently. It's possible that by stabilizing the frame, the relative shake of the subtitles will be worse. I think the shake is good, but maybe you can just have a little less of it.
Hmm, that's actually a very interesting point. Harmy, have you considered that possibility?