Mood: The mood of the video appears to be intense and dramatic, with a sense of conflict or rivalry. The theme seems to revolve around a choice or a divide, as indicated by the text 'PICK A SIDE'. The emotions conveyed are likely to be strong and passionate, possibly related to a story of love, friendship, or loyalty.

Environment: The setting of the video seems to be a mix of dark and contrasting environments. The left side has a blue tone, suggesting a nighttime or indoor setting, while the right side has a red tone, indicating a possibly more aggressive or passionate atmosphere. The presence of people in the background, some of whom appear to be performing music, suggests that the video might be related to a musical or a film with a strong musical element.