1. Concentration is one edge of a two edged sword. The other edge is relaxation. You use a balance of concentration and relaxation (not too tense, not too relaxed) and rest your awareness on your object of meditation. The breath, in this case, can be your object. Simply rest your awareness on the breath. Use concentration to keep your mind from drifting, and use relaxation to keep your mind from getting too tense. See: https://www.youtube.com/watch?v=GLjelIPg3ys

2. If you're watching the movie whilst being aware that you're watching it (watching yourself watching the movie), that is meditation. Otherwise, you're simply distracted from your basic awareness.