Promising review: 'My son was given this for Christmas, along with an Amazon Fire tablet from Santa. One reviewer says it covers everything to help your video look professional: from the 'Lego walk' so your mini figures look 'real', to building extra props and sets from your Lego collection, to changing the heads to different facial expressions to show emotion.
Watch a YouTube video that the author made - it's where the screenshot above came from! It's best for ages 10+.