Hey. I have had a lot of experience building chrome extensions in the past. I think I have a very clear understanding of what you need as the final product. The extension will need to be able to authenticate the user using google Oauth2.0 to get the correct access tokens. The access tokens will be used to fetch the image files using google drive APIs. Once that is done, the extension can easily use the URL of the page it is on to fetch all the images in that folder, or from the nested folders and join them into a video stream.
Is there any detail that I am missing? Please contact me on chat and we can discuss further.