It's a long video, but only the beginning part is summarized.

Multiple Choice Dropdown
  1. Error
Lily's summary notes are basically created based on 'subtitles'.
This problem occurs when YouTube channel creators manually create subtitles for only the first few minutes of a video.
In this case, if you use the 'Increase voice recognition accuracy' function,
This solves the problem because it generates subtitles using its own speech recognition engine.
After pasting the video link on the main screen, turn on the 'Increase voice recognition accuracy' toggle at the bottom right.