Comment by kanzure

Here are some playlists (not what OP requested):

cryptography lectures https://www.youtube.com/playlist?list=PLgO7JBj821uGZTXEXBLck...

Dan Boneh cryptography lectures https://www.youtube.com/playlist?list=PL9oqNDMzcMClAPkwrn5dm...

machine learning lectures https://www.youtube.com/playlist?list=PLgO7JBj821uGo_Up8MA7A...

theoretical computer science lectures https://www.youtube.com/playlist?list=PLgO7JBj821uGo_Up8MA7A...