Facebook launches new app Riff that helps you make collaborative videos with friends

Facebook has launched another video camera app. Riff for the iPhone andAndroid allows collaborative looping video creation – a bit like Twitter’s Vine on steroids.

The free app allows one user to record a short clip similar to a Vine or Instagram video and publish it within the app or Facebook. Other users can then find and add to that clip with their own short clip, building a longer video that loops through.

The idea is that a collaborative story can be told across multiple view points and clips based around a topic.