Mood: The mood of the video appears to be nostalgic and melancholic, with a hint of drama and romance. The use of sepia-toned images and a grayscale background suggests a classic or retro feel, while the prominent display of the title 'Kandathum Kanathathum' in orange font implies a sense of longing or yearning. The overall theme seems to be a romantic drama or a musical, possibly from the 80s or 90s.

Environment: The setting of the video appears to be a mix of modern and vintage elements. The woman in the pink shirt and long black hair seems to be in a contemporary setting, while the sepia-toned images and grayscale background suggest a nostalgic or retro environment. The images of men and women in the background appear to be from different eras, adding to the sense of timelessness and nostalgia.