[PyMOL] How to print the time stample on each frame of the movie for molecular dynamics trajectory in Pymol?

[sunyeping <sun...@al...>]

Dear All,

I load a molecular dynamics (gromacs) trajectory into Pymol and wish to make a movie with it. The trajectory contains 2500 frames, corresponding to 200 ns simulation time, so each frame represents 80 ps. I wish to print time stample on each stample. For example, on the first frame, " 0 ns" is printed; on the second frame, "80 ps" is printed; on the third frame, "160 ps" is printed. How I cannot find any clue how to do this. Could you have any clue how to finish this task? 

Best regards,
Yeping Sun