Mood: The mood of the video appears to be romantic and melancholic, with a sense of longing. The couple's intimate pose and the nighttime setting with a historic monument in the background suggest a sense of nostalgia and love. The theme seems to revolve around a past love or a lost opportunity, hinted at by the phrase 'Iss baar jo chale gaye' which translates to 'This time, they left'.

Environment: The setting appears to be a historic location, possibly the Taj Mahal, at night. The monument is visible in the background, and the couple is sitting on a brick wall or a low structure, with a cityscape or a dark sky visible behind them. The atmosphere is serene, with a sense of calmness and tranquility.