There’s an app for the iPhone (maybe other stuff) called Flipagram.  You can select your photos and make a video out of them to post on social media, especially Instagram. Except on Instagram I think it has to be cut to only 15 seconds.

You might have to be signed up for Flipagram (it’s free) to see this, I’m not sure, but here is the link of my first Flipagram I made of my Halloween decorations!

http://flipagram.com/f/LBg5c89ioj

Click to watch.