Mood: The mood of the video appears to be lively and celebratory, with a hint of romance. The theme seems to revolve around a wedding or a festive occasion, given the title 'Shaadi Mein Zaroor Aana' which translates to 'You Must Come to the Wedding'. The overall emotion conveyed is one of joy and festivity.

Environment: The setting of the video seems to be an urban or semi-urban area, possibly in India, given the background which appears to be a cityscape with buildings and trees. The exact location is not clear, but it seems to be a vibrant and lively environment, possibly a wedding venue or a city street during a festive occasion.