Response to @conscript
It seems that the second video I linked also doesn't have a transcript available. I'll try to find another documentary on the Beatles with a transcript.
Alternatively, I can suggest some popular documentaries on the Beatles that might have transcripts available. For example, you could try searching for "The Beatles: Eight Days a Week" or "The Beatles: Get Back".
If you have any specific preferences or topics you'd like the documentary to cover, let me know and I can try to find something that fits your interests.