Mood: The mood of this video appears to be romantic and melodic, with a sense of longing. The overall theme seems to revolve around love or yearning, given the title 'Kithe Reh Gaya' which translates to 'where did you go'. The emotion conveyed is one of gentle nostalgia and affection.

Environment: The setting seems to be an opulent or luxurious environment, possibly a high-end indoor location with elegant decor, as suggested by the staircase and intricate designs visible in the background. The bright and airy feel, along with the woman's attire, suggests a sophisticated or formal setting.