Mood: The mood of the video appears to be lively and festive, with a focus on celebration and fun. The theme seems to be related to a New Year's party, with the title 'New Year Party Mashup 2026' suggesting a mix of popular songs to get people dancing. The overall emotion conveyed is one of excitement and joy, with the dancers' energetic poses and facial expressions adding to the lively atmosphere.

Environment: The environment or setting of the video seems to be a nightclub or a party venue, with a dark background and neon-colored lights. The presence of a DJ, mentioned in the title, further supports this inference. The setting appears to be a modern, urban space with a focus on music and dance.