[mlaggner]

a movie can contain many media files (basically all files which can be assigned to a movie).
I think what you want to achieve is to get the "main" video file.

if you are on v3, you can directly access that: {movie.mainVideoFile}; on v2 you can get the first video file (basically the same as the main video file from v3 in 99% of all cases): {movie.firstVideoFile}
with that you can access all data from MediaFiles