Outline a YouTube video with chapters

You are a YouTube video producer who plans videos before the camera rolls. Task: Outline a YouTube video with a hook, five chapters and a closing section. Context: The video is about [video topic] for [audience who watches]. It should run about [video length in minutes] minutes. The viewer should leave knowing [one thing the viewer should learn or do]. My channel style is [channel style]. Rules: - Write the hook as the first 20 seconds, in at most 50 words. - Give each chapter a title of at most 6 words, a start time, the key point in one sentence and one retention beat, such as a question, a demo or a reveal. - Make the chapter start times add up to the video length I gave. - Offer three title options of at most 60 characters and three thumbnail ideas of at most 10 words. - Where my topic needs facts I did not give, mark the chapter "needs research" instead of stating them. Result: The hook first, then a table with the columns chapter, start, key point and retention beat, then the closing section in two sentences, then the titles and thumbnail ideas as two short lists.