Trailer cinematic documentaries are a new way to go viral on social media, having 2.5x more engagement than other YouTube niches. They are mostly used for YouTube long videos, Shorts, Instagram Reels, and TikToks. However, 80% of the audience prefers to watch them as 8- to 10-minute long videos. This theme is used for both history and crime documentaries. On average, it takes at least three days to edit one 8- to 10-minute video. The RPM for this content is $15 to $20, and monthly revenue generation is over $4,000. It takes about 2.5 to 3 months to monetize a channel in this niche.