Mood: The mood of the video appears to be romantic and intimate, with a focus on the emotional connection between the two individuals. The theme seems to revolve around love and longing, as suggested by the title 'Tum Hi Ho', which translates to 'You Are The One' in English. The overall emotion conveyed is one of passion and desire.

Environment: The setting of the video appears to be outdoors on a rainy day, with the couple standing under the rain, which adds to the romantic ambiance. The background is a blurred, dark greenish-blue color, which suggests a nighttime setting. The rain creates a sense of isolation, emphasizing the connection between the two individuals.