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It's a super useful feature that YouTube has. You can upload a a video and then work on captions later. With the AI tools that are available now, transcribing a video is about 60-70% automatic and the rest manual. It depends on how technical and how fluid the speakers are.

Yeah, I tried that once with YT and it did amazing job, all I had to do afterwards was to correct few mistakes and capital letters and spaces. I remember I didn't have to spent much time at all with that!