Mood: The mood of the video appears to be romantic and nostalgic, with a sense of longing. The title 'Lo phir yaad aagaye' translates to 'Here come the memories again', suggesting a theme of reminiscence and love. The overall emotion evoked is bittersweet, with a hint of melancholy.

Environment: The setting of the video seems to be a serene and picturesque natural environment, possibly a forest or a hill station, with trees and mountains visible in the background. The warm and soft lighting suggests that the video may be set during sunrise or sunset, adding to the romantic and nostalgic ambiance.