Mood: The mood of the video appears to be romantic and nostalgic, with a hint of melancholy. The theme seems to be a musical rendition or a cover of a popular Bollywood song, given the title 'Hum Tum LoFi Mix'. The emotions conveyed are those of love and longing.

Environment: The setting of the video seems to be an outdoor location, possibly a garden or a park, with lush greenery and a dark blue background that could represent a night setting. The environment appears to be serene and intimate, fitting for a romantic music video.