Mood: The mood of the video appears to be romantic and joyful, with a sense of euphoria. The theme seems to revolve around love and the significance of the person being addressed in the speaker's life, as indicated by the phrase 'Tu Meri Zindagi Hai' which translates to 'You are my life'.

Environment: The setting seems to be an outdoor location with blurred background elements that could suggest a cityscape or a scenic view, but it's not clearly defined. The focus is on the person in the foreground, suggesting that the video might feature a mix of close-up shots and possibly scenic views.