We have been building Horizon, a universal iOS app that brings an end to vertical videos, allowing users to always shoot horizontally. It is set to be released in the following days!
The resulting video can still be up to 1080p but it will be a portion of the original, depending on which mode the user will choose. The app supports both fixed & dynamic frame modes. The dynamic one will adjust the frame based on the device's rotation (much like the interactive demo you can see on our website) :)