Hi all 
https://anysummary.app/ is the quickest way to grasp the essence of any content, free and without sign-in.
It can handle audio, video, docs, images… whatever you want! Try it out, maybe it’s useful. Let me know what you think! 
(for the Twitter folks here, you can also tag @anysummary there to summarize long threads for you)
I got motivated for this after wanting to understand a large number of user research interviews in detail without having to watch or read them all. Example of that use case here.