Mood: The mood of the video appears to be melancholic and introspective, with a sense of longing. The title 'Humko Deewana Kar Gaye' which translates to 'You Have Made Me Crazy' suggests a theme of love and obsession. The use of the word 'Sad' in the title also implies that the video may be a sorrowful or heartbreaking one.

Environment: The environment appears to be an indoor setting, possibly a restaurant or a cafe, with a blurred background that suggests a bustling atmosphere. The presence of a sign with gold lettering and a white wall with windows suggests a modern and urban setting.