Mood: The mood of the video appears to be nostalgic and romantic, with a sense of behind-the-scenes exclusivity. The theme seems to revolve around the making of a beloved Bollywood film, likely showcasing unseen moments and stories from the sets of 'Dilwale Dulhania Le Jayenge'. The emotion evoked is one of warmth and fondness, hinting at a deep dive into the film's production and its enduring legacy.

Environment: The setting seems to be a blend of the film's promotional material and possibly a serene outdoor location, given the natural lighting and greenery visible in the background. The environment could be a film set, a picturesque outdoor location used in the movie, or a studio where 'behind-the-scenes' footage is typically captured.