Decided this was too hard to I've just taken the html video out of react 🙂

Brian, even if there is an issue with rum/react, I'd move that formula out of component altogether, and rum/reacted on a single computation result (another atom, eg. derived one: https://github.com/tonsky/rum/blob/gh-pages/src/rum/derived_atom.cljc#L4)

In case anybody is having the same issue [SOLVED]: http://stackoverflow.com/questions/33208477/react-native-android-scrollview-scrollto-not-working