I make videos created from pictures, for a better quality and dynamics I use "pan and zoom" for these pictures.
Anyway.... everything works fine when I create a particular video....
but... when I put head to head more than 3 videos (for a compilation for example) the pan and zoom for some pictures is shaky... not smooth as it is for that particular movie before I added it in the compilation... (so on the movie itself (alone) the pan and zoom is not shaky, but when I add 3 or more videos head to head to make a compilation, after the conversion, the pan and zoom which was ok on a single video, now is shaky, it shakes, tremble in a way...).
What is the problem, I had this issue in the past also....