Hey, we have an iphone app [1] that turns video into 3d motion data. We're now launching an API that does the same. The API makes it suitable for integration into apps / platforms - we'd love to hear about your use cases so feel free to get in touch. Details and quickstart are at the url. More demos / details etc. on our web site. [2]
We're not quite ready for full self serve, but you can request an API key via this form. [3]