According to the Real SEO’s data from the past 30 days, videos on YouTube are about 10X longer than on Facebook. Facebook tends to host short type content into the feed, in opposite to YouTube, which prefers serving you longer and higher quality content. Stas show the average duration of a Facebook video is 81.22 seconds, and for YouTube is 870.89 seconds. Video posted natively to Facebook usually generates more engagement, while YouTube has a lower views to engagement. The average of viewer engagement for Facebook is 31.12 and for Youtube is 22.42. Videos posted natively to Facebook generate more engagement, but it takes fewer views for YouTube videos to generate the same engagement rate. The most engaged videos on YouTube are longer than the most engaged videos uploaded to Facebook.