NotebookLM mainly needs usable transcript text. A video can play perfectly and still become a weak source.
- Confirm captions exist before importing a full playlist.
- Check whether the spoken language is recognized correctly.
- 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/
