Rumours Tour - Live in Japan Footage

[Iktomi]

Hoping someone could shed some light on this silly question I have: so I've been watching several videos from the Tokyo, Japan concert and I really took a liking to some of the footage on Youtube, like of NGBA, GDW, Over My Head, etc., but I noticed that some of these videos have completely different angles and focuses. Does anyone know why? Like in one video of NGBA, the camera focuses on Lindsey's face, while in another video, it might focus on his guitar and John's bass. I noticed this happens for several of the other songs as well. I assumed they are from the same concert, but maybe I'm wrong?

Thanks for any help!