Mood: The mood of the video appears to be romantic and melodic, with a focus on the artist Nikita Ahuja. The theme seems to revolve around love and relationships, given the title 'Teri Hi Hoon' which translates to 'You are mine'. The overall emotion exuded is one of affection and intimacy.

Environment: The setting of the video seems to be a studio or an indoor location with a mottled brown background, suggesting a music video or a song recording. The focus is on the artist, Nikita Ahuja, who appears to be in a contemplative or romantic state.