Mood: The mood of this video appears to be lively and energetic, with a theme of fun and playfulness. The use of bright colors and bold graphics suggests a carefree and youthful vibe. The presence of multiple couples and the title 'Smashup' implies a lighthearted and entertaining tone, possibly a music video or a dance track.

Environment: The environment or setting of this video seems to be a modern, urban or party setting, given the attire of the individuals and the overall aesthetic. The colorful background and graphic design elements suggest a creative and vibrant atmosphere, possibly a nightclub or a music festival.