Hi. This effects called “accordion gallery”.
This idea/pattern was more in “fashion” before
responsive design (How to implement this style on mobile?) - So, I don’t think it will be so easy to find update (2017 code) Plugin for this idea.
I think the best solution is to hide this accordion on mobile (and show regular video gallery).
OPTION ONE - jquery-plugin
First find the plugin you want & learn the docs - than you should add custom code, add CSS/JS (CDNs), Add the correct class and HTML structure and that’s it (Try to implement fullpage.js or slick (a lot of forum topics about this two)- to learn how-to integrate webflow with some JS-library) - and last initialize.
OPTION TWO - by webflow interactions
I dont know if this could be made by interactions, but give at a try
OPTION Three -freelancer
Its hard to solve this by forum answer -
Also you can find freelancer or forum freelancer