Mood: The mood of the video appears to be casual and conversational, with a sense of excitement and anticipation. The theme seems to be an in-depth discussion or interview with Aamir Khan, a renowned Indian actor, as indicated by the title 'ON SET OFF SCRIPT'. The overall emotion conveyed is one of enthusiasm and curiosity.

Environment: The setting appears to be a studio or a behind-the-scenes environment, possibly on the set of a film or a television show. The background features a yellow-toned wall with some graphics and text, suggesting a creative or entertainment-related space. The presence of multiple individuals, including Aamir Khan, suggests a talk show or interview-style setting.