You'll have 2 Bibliographies
1. During the credits for the video itself - credit your music, media, images, or photos - basically any media you used.
2. For the content, include a written APA Style Bibliography.
Just a friendly reminder...
Here are a few excellent prize-winning student made videos. They were created for a different contest with different requirements and video length, but they are still great examples. Here's an article about that contest.