Mood: The mood of the video appears to be mysterious and intriguing, with a sense of secrecy and suspense. The tagline 'Past is Present' and the title 'Kuch Raaz Hain' (which translates to 'There are some secrets') suggest that the video may explore themes of hidden truths, revelations, or unexpected twists. The overall emotion evoked is one of curiosity and anticipation.

Environment: The environment or setting of the video seems to be outdoors, with a blurred background that suggests a natural or urban setting. The exact location is unclear, but the presence of greenery in the background could indicate a park or a garden. The focus on the woman's face and the prominent display of the title and tagline suggest that the video may be a promotional or teaser video for a larger narrative.