Mood: The mood of the video appears to be romantic and melancholic, with a sense of longing. The theme seems to revolve around heartbreak or unrequited love, as suggested by the title 'Dil Bachate Bachate'. The overall emotion conveyed is one of introspection and possibly heartache.

Environment: The setting of the video seems to be an urban or cityscape environment, likely at night, given the blurred background with yellow lights. The dark and muted color palette, along with the man's attire, suggests a sophisticated or modern setting.