Syncing music to visuals using Fruity Video Player
If you're brought onto a film production team early, the director may ask you to compose a song with key emotions necessary for the scene before it's filmed. You'll compose the song, and the editor adjusts the footage to fit the song whenever the footage is ready. This is the easiest scenario for you. It allows you lots of flexibility and freedom to experiment with minimal restrictions. If scoring for animation, music is almost always composed before the animating stage, meaning animators can design around the music.
Music does not always come before visuals though. This is especially true if you are brought in to score footage in postproduction. There are situations where the director will give you an edited cut of the film and tell you to score your music based on the footage. If the director disliked the music composed by a previous composer, it means you'll need to come in and either fix or rescore the film...