NotebookBloom: A valid YouTube link can still be a bad NotebookLM source

NotebookLM mainly needs usable transcript text. A video can play perfectly and still become a weak source.

1. Confirm captions exist before importing a full playlist.
2. Check whether the spoken language is recognized correctly.
3. Test two or three videos with a question whose answer is clearly spoken.

Bulk import can save repetitive pasting. It cannot create a transcript that is not there.

Test a small sample before adding an entire playlist or channel.

I built NotebookBloom around this workflow: https://notebookbloom.com/blog/notebooklm-bulk-import-folders/