Social Media Today Writes:

Backcountry Yoga: Video in Carousel Facebook's Carousel Ads have become a favorite among retailers with multiple products to sell, but they've also been adopted by businesses looking to promote many angles of one thing -- whether that thing is a car, financial services app, or an adventure-packed ski trip. 

At first glance the Carousel Ad above looks like any other you might see in the Facebook Newsfeed, but look more closely and you'll see that the fifth panel is a video. If you look even closer, you'll notice that the images in the Carousel ad are stills from the video.

Not satisfied by attracting signups with a mere series of images, Backcountry Yoga has taken this ad to the next level by incorporating motion and sound. Lesson learned: If you've got a video, you've got an interactive Carousel Ad waiting to happen.