Make a movie with camera rotation preceding trajectory

[HoaSoup]

Hello, I would like to create a movie for a 100-frame molecular dynamics trajectory of a protein-ligand complex. The problem is: before the trajectory starts to play, I want the camera to rotate from an overview of the whole complex to the ligand in 100 frames. Only after the rotation will the trajectory starts to play.
What I have tried is:

mset 1x200
scene 001 # overview
scene 002 # zoom into the ligand
mset store, 1, scene=001
mset store, 100, scene=002
mset store, 200, scene=002
load_traj traj.xtc, object=object_name, state=101

Finally, I exported png images via GUI so that I could set the image resolution.
Result: all the exported png images stuck at the same starting conformation of the complex.
What should I do?

[HoaSoup]

I managed to find a workaround by duplicating the first frame of the trajectory into 100 states.

# make system with 200 states. The first 100 states are inanimate, the last 100 states are trajectory.
create dum, m. system, 1, 0 # make dum with first state of system
create dum, m. dum, 0, -1 # duplicate to 2 states
create dum, m. dum, 0, -1 # duplicate to 4 states
create dum, m. dum, 0, -1 # duplicate to 8 states
create dum, m. dum, 0, -1 # duplicate to 16 states
create dum, m. dum, 0, -1 # duplicate to 32 states
create dum, m. dum, 0, -1 # duplicate to 64 states
create dum, m. dum, 0, -1 # duplicate to 128 states
delete_states dum, 101-128 # trim down to 100 states
create dum, m. system, 0, -1 # append states of system to dum

mset 1x200
scene 001 # overview
scene 002 # zoom into the ligand
mset store, 1, scene=001
mset store, 100, scene=002
mset store, 200, scene=002
mset store, 1, object=object_name, state=1
mset store, 200, object=object_name, state=200
movie.produce movie.mpg, quality=90

movie.produce does not allow me to choose image resolution, so I still prefer its GUI counterpart.

[JarrettSJohnson]

Do the width and height arguments in movie.produce not work for you?

[HoaSoup]

I have no idea this command has these arguments. Thanks!

[HoaSoup]

Or I could use mpng + ffmpeg in case I need a specific frame rate for my movie