Mood: The mood of the video appears to be romantic and sentimental, with a focus on love and relationships. The overall theme seems to be a collection of romantic moments or songs, possibly from various movies or a specific movie. The emotion conveyed is one of affection and closeness, with the images of the couples' faces and profiles suggesting intimacy and tenderness.

Environment: The setting of the video is likely a mix of various locations, possibly including indoor and outdoor settings, given the varied backgrounds and lighting conditions in the images. However, the exact setting is not clearly defined, suggesting that the video may be a compilation or mashup of different scenes or songs rather than a narrative-driven video.