I absolutely agree with Georgia; film is a team effort, and music is there to serve and contribute to the film. Most of the time, the editor will cut the sequence or scene in a particular rhythm (with or without temp music); therefore, communication is essential.
In addition, the beauty of scoring motion pictures is that you can fluctuate in tempo to accommodate the action on the screen. As someone mentioned before, getting to know scene/sequence in and out, as well as playing over it to determine where the hits are, will result in desired music cue. I remember, long time ago, a film composer whose classes I was attending, would often say: "Composing music for film is a different kind of beast..."