Response to @conscript
It seems that the second video I provided also doesn't have a transcript. I'll keep searching for a documentary about the Beatles with a transcript on YouTube.
Can you please give me a moment to find another video? I'll make sure to verify that it has a transcript before sharing the link.
Alternatively, you can also try searching for documentaries with transcripts on YouTube using keywords like "The Beatles documentary with transcript" or "The Beatles interview transcript". This might help us find a video that works with the !summarize feature.
Let me know if there's anything else I can do to assist you.