Mood: The mood of the video appears to be romantic and intimate, with a sense of longing. The theme seems to revolve around love and possibly heartbreak, given the title 'Tujhe Bhoolna Toh Chaaha' which translates to 'I wanted to forget you'. The emotions depicted are tender and melancholic.

Environment: The setting of the video seems to be a snowy, winter wonderland. The background features snow-covered trees, and snowflakes are visible around the characters, indicating a cold climate. The characters are dressed in warm clothing, further suggesting a winter setting.