I'd recommend Proto.io – it has timeline-based animation (very similar to After Effects where you can animate multiple properties on a single object), on-scroll animation, you can implement video, and preview everything in a web browser.
I think Atomic.io can do most of those things too (except using video), but I haven't tried it out in a while.
InVision Studio is good, as you can design and animate in the same tool, and its timeline animation is similar to Proto.io and After Effects. But you can't do on-scroll animation, which is why Proto edges it for me.
I'd recommend Proto.io – it has timeline-based animation (very similar to After Effects where you can animate multiple properties on a single object), on-scroll animation, you can implement video, and preview everything in a web browser.
I think Atomic.io can do most of those things too (except using video), but I haven't tried it out in a while.
InVision Studio is good, as you can design and animate in the same tool, and its timeline animation is similar to Proto.io and After Effects. But you can't do on-scroll animation, which is why Proto edges it for me.