iSpring suite is a Powerpoint add-in that lets you create and export courses and quizzes.
https://www.ispringsolutions.com/ispring-suite
But it's a bit pricey, albeit less than Storyline.
Hey, I strongly recommend you iSpring Suite then. All you need is to have PowerPoint program. You will be able to quickly add a video narration, shoot a screencast, insert a quiz, and much more. There is 14-day trial version :) https://www.ispringsolutions.com/ispring-suite
iSpring Suite is a great tool in my opinion. Very easy to use, and what I especially like is the built-in Quizmaker and dialogue simulations. Check it out: https://www.ispringsolutions.com/ispring-suite
iSpring Suite has a built-in Video Studio. I used it few times to record from the webcam and selected screen area simultaneously. It was quite easy to use and redact the video.
iSpring Suite is the right tool for content creators and developers. It allows users to create eLearning courses with quizzes. interactive assessments, video tutorials, screencasts. dialogue simulations, and even more. The greatest advantage is the integration with PowerPoint, so the tool is user friendly and extremely easy to use.
You can try iSpring Suite for free → https://www.ispringsolutions.com/ispring-suite
It does retain animation and interactivity. It's basically a plug-in you add to PowerPoint and convert from there. From looking at the website, it seems you have access to their Cloud Services that lets you share content, so no need to have your own hosting service: https://www.ispringsolutions.com/ispring-suite