Mood: The mood of the video appears to be romantic and celebratory, with a focus on the joy and love between two people. The theme seems to revolve around relationships and the significance of a partner in one's life, as hinted by the title 'Meri Zindagi Hai Tu' which translates to 'You Are My Life'. The overall emotion exuded is one of happiness and devotion.

Environment: The setting seems to be a festive or celebratory backdrop, possibly a wedding or a similar joyous occasion, given the traditional attire of the individuals. The presence of fairy lights and drapes suggests an intimate and decorated venue, likely indoors or a well-lit outdoor setting.