Parasomnia (1970)

Ami is a viral-seeking youtuber who doesn’t believe in ghosts. When she experiences sleep-paralysis, she records herself sleeping to prove that the sleep-paralysis demon is just hallucination. Ami is startled when she sees unexplained footsteps stepping on her body. Her sleep-paralysis worsens. She begins to have extreme seizures and painful bruises. A shaman tells her that she is being tormented by the demon Siampa.