{HOOK LINE — 100-150 chars, primary keyword in first 60 chars, restates
title intent, gives a click-for-more reason. This is the above-the-fold.}

{BODY — 3-5 paragraphs, 1,500-3,500 chars total. Explains what the
viewer will learn, why it matters, who it is for, what they will be able
to do after watching. Mentions all secondary keywords and 8-15 Knowledge
Graph entities from the topic cluster (people, brands, concepts, places,
products). Natural density. Uses short paragraphs for scan-reading.}

⏱️ CHAPTERS
0:00 {descriptive keyword-rich label}
0:XX {label 2}
X:XX {label 3}
...

🔗 LINKS MENTIONED
- {link 1 — labeled}
- {link 2 — labeled}

📚 RESOURCES
- {resource 1}
- {resource 2}

📺 RELATED VIDEOS
- {related video 1}
- {related video 2}

👋 ABOUT {channel name}
{1-2 sentence channel pitch} → Subscribe: {channel URL}

📩 BUSINESS INQUIRIES
{email}

{FTC disclosure if affiliate/sponsored}

#primaryKeyword #secondaryTopic #niche

primary keyword, secondary 1, secondary 2, long-tail 1, long-tail 2,
entity 1, entity 2, broad niche, channel brand

[0-2s]   VISUAL HOOK: {what is on screen}
         AUDIO HOOK:  "{first sentence, ≤12 words, payoff preview or
                       pattern-interrupt}"

[2-6s]   "{stake / why this matters — make the viewer feel the cost
          of not knowing}"

[6-10s]  "{credibility flash — 1 sentence, what gives you authority
          here}"

[10-15s] "{explicit promise — what the viewer will have by the end}"
         → CUT TO: first content beat

{
  "@context": "https://schema.org",
  "@type": "VideoObject",
  "name": "{title}",
  "description": "{above-fold description}",
  "thumbnailUrl": "{thumbnail URL}",
  "uploadDate": "YYYY-MM-DDTHH:MM:SSZ",
  "duration": "PT{H}H{M}M{S}S",
  "contentUrl": "{watch URL}",
  "embedUrl": "{embed URL}",
  "publisher": {
    "@type": "Organization",
    "name": "{channel name}",
    "logo": { "@type": "ImageObject", "url": "{logo URL}" }
  },
  "hasPart": [
    {
      "@type": "Clip",
      "name": "{chapter 1 label}",
      "startOffset": 0,
      "endOffset": 60,
      "url": "{watch URL}&t=0s"
    }
    /* ... one per chapter */
  ],
  "potentialAction": {
    "@type": "SeekToAction",
    "target": "{watch URL}&t={seek_to_second_number}",
    "startOffset-input": "required name=seek_to_second_number"
  }
}