Mood: The mood of the video appears to be romantic and sentimental, with a focus on love and relationships. The images depict intimate moments between couples, conveying a sense of closeness and affection. The overall theme seems to be a celebration of love, with the title 'Love Mashup 2019' suggesting a collection of romantic tracks or moments from 2019.

Environment: The environment and setting of the video seem to vary, with different locations and scenarios depicted in each image. Some images appear to be set in public spaces, such as outside an ice cream shop, while others seem to be in more private settings, like a dressing room or a quiet outdoor spot. The backgrounds are not the primary focus, with the emphasis on the couples and their interactions.