Mood: The mood of the video seems to be dramatic and intense, with a sense of urgency and possibly danger. The theme appears to be related to a romantic or social drama set in Calcutta, with the title 'Ekla Chalo Re' suggesting a sense of longing or separation. The overall emotion conveyed is one of passion and turmoil.

Environment: The setting of the video appears to be Calcutta, with the architecture and design elements suggesting a mix of traditional and colonial influences. The background features a large, ornate archway with intricate carvings, and the color palette is warm and rich, with shades of red, orange, and yellow. The overall environment seems to be one of opulence and grandeur, but with a sense of turmoil and upheaval.