Mood: The mood of the video appears to be romantic and melancholic, with a sense of longing. The theme seems to revolve around love, heartbreak, or separation, as hinted by the title 'Tujhe Bhoolna Toh Chaaha' which translates to 'I wanted to forget you'. The overall emotion conveyed is one of yearning and nostalgia.

Environment: The setting of the video seems to be a cold, possibly snowy, outdoor location, given the winter clothing worn by the individuals. The atmosphere is serene and calm, with a subtle hint of sadness. The snowy backdrop and the warm embrace of the two individuals on the right side of the image suggest a cozy and intimate setting.