Can we edit a movie that discribe the electron density variation when two atoms are getting closer?

Hi All,
 
Can we edit a movie that can discribe the orbital or electron density variation when two atoms, for example H atom, are getting closer? I have tried to do the orbital calculation and analysis firstly using DMol3, and then use script to add two structures(with different distance between two H atoms) into a trajectory file, however, it can just show the field data of the first structure, and the field can not change with the atomic position. So is there anyway that I can solve this problem? moreover, I think MS can do this because it can analyse the density field which can be changed with the structure when using Forcite ananlysis.
 
 
Regards,
 
Yadong