For the diegetic in Buffy, I found that on 16:50, the woman try to enter some place with identification. The sound of computer says that she could not enter the hospital. The breathing of this woman becomes rapid. I think this is the diegetic part in this movie. From the link that the professor provides, there is no video on it. When I hear these sounds I can imagine the scene, there is no person and the woman must be chased by something. She is trying to enter some place to shield herself, but she cannot enter without identification. This diegetic makes me feel the situation of her, and this does a contribution to the aesthetic of horror movie. This situation for a woman who is by herself is very scary. Especially, her rapid breathing shows that she is in tension.
For the non-diegetic in Buffy, I found that on 25:44. The background music begins. At first of this music, the temple is very rapid. It sounds like the person is in danger, and when you hear it you will get nervous. The sound of violin makes it creepier. The sound of the drum, once and once seems some scary things will appear. At the mid of this music the pitch of it becomes slower, but it is very weird and spiritual. This is the non-diegetic in Buffy. I think this part of music is doing more contribution than the diegetic thing. It will lead people’s motion to a nervous point. Not only watching the video, but also listening to the scary music. The music is easy to control the audience’s mood.
For the mise-en-scene in Buffy, this movie is taking on some school campus. The fighting scenes seems like happens in a theatre. This makes more interesting that the woman could climb or fall into the stage. The place that the movie picks is more like the place that we are easy to identify. This mise-en-scene could lead people to the environment. When people see this scenes, people will think some day they will meet a vampire. Mise-en-scene is very important to make a movie more attractive and realistic.