Mood: The mood of the video appears to be nostalgic and informative, possibly showcasing the history and culture of Kolkata's transportation system. The theme seems to revolve around the city's heritage and daily life, with a focus on the iconic tram system.

Environment: The setting of the video is likely Kolkata, India, with the presence of a vintage tram and a colonial-style building in the background. The environment seems to be a bustling urban area with a mix of old and new infrastructure.