Mood: The mood of the video appears to be romantic and dreamy, with a sense of longing. The theme seems to be related to love and nostalgia, given the title 'O Re Piya', which translates to 'Oh, my beloved'. The overall emotion conveyed is one of yearning and melancholy.

Environment: The setting of the video appears to be a serene and picturesque location, possibly a palace or a temple, with intricate wooden pillars and arches. The background features a starry night sky, suggesting a warm summer evening. The presence of trees and buildings in the distance adds to the sense of a peaceful and idyllic setting.