Mood: The mood of the video appears to be casual and laid-back, with a hint of youthful energy. The theme seems to be related to a song or music video, likely a romantic or introspective one, given the title 'Chalte Chalte' which translates to 'While Walking' or 'As We Walk'. The emotion conveyed is relaxed and carefree.

Environment: The setting appears to be an urban or suburban area, possibly a college campus or a city street, given the architecture and the protagonist's attire. The background is blurred, but it seems to be a daytime setting with natural light visible.