What is facebook friendversary video?

Facebook Friendversary video is a personalized video created by Facebook to celebrate friendship anniversaries. It highlights the moments shared and memories created between two Facebook friends. The video includes photos and posts shared between the friends over the years, along with some animations and music. Facebook Friendversary videos are created automatically by Facebook and appear in the user's News Feed and Messaging inbox, usually showing up a few days before the friendversary date. Users can then share the video on their Timeline, or in a private message with the friend with whom they are celebrating the anniversary.