The metadata standard: what goes in a title, a description, and a chapter list.
Nine blocks, in a fixed order, each one written for a specific reader. The first two are the only text most humans will ever see. Everything after them works for machines, and most of it is governed by documented platform rules that fail silently when you break them.
not 30. YouTube says tags play a minimal role in discovery (YouTube Help).
minimum, first at 00:00, 10 seconds each, or chapters do not render (YouTube Help).
the conservative budget for text visible before the cutoff. YouTube publishes no number.
Nine blocks, in this order.
| # | Block | Serves | Why it is there |
|---|---|---|---|
| 1 | One-sentence answer with the entity named, about 120 characters | Humans, AI, Google snippet | The only text guaranteed to be visible. Feeds og:description. Answer-shaped text is what gets lifted. |
| 2 | A single primary call to action on a short branded URL | Humans | Above the fold on every surface. Survives truncation and survives the link not being clickable. |
| 3 | Prose summary, 120 to 200 words, entity-rich | AI | Description length is the strongest measured correlate of repeat AI citation. |
| 4 | Chapters, spec-valid | YouTube and AI | Highest-leverage single block. Turns one video into several citable objects. |
| 5 | Key takeaways as bullets | AI | Extractable atomic facts. YouTube renders a hyphen list natively. |
| 6 | Two to four deep links, never the homepage | Humans, routing | More links means lower value per link and more rot to maintain. |
| 7 | Short About block, varied by team or product line | AI entity grounding | Identical boilerplate across 2,000 videos works against you. |
| 8 | Disclosure line, if one applies | Compliance | YouTube's external links policy covers spoken and on-screen URLs too. |
| 9 | Exactly three hashtags, at the end | YouTube | Only the top three surface. Over-tagging is a stated removal risk. |
Write to 200 to 350 words.
That band comes from Briggsby's study of 100,000 videos, which found it optimal for YouTube rank and performance degrading beyond 350 (Briggsby). It also happens to be roughly what an AI engine needs in order to have something worth lifting (Otterly).
YouTube will not tell you where the cutoff is.
There is no published character count for the "more" cutoff on any surface, so every specific number in circulation is uncited. Plan against a conservative 120 characters, which means the answer and the primary link both have to fit inside that budget. The field itself caps at 5,000 characters (YouTube Help).
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The title carries the entity first.
Entity and literal problem in the first 40 percent, then a separator, then the benefit or the curiosity clause. That order gives an engine the matching string where truncation will not reach it, and gives a human a reason to click at the end.
"Registration error 1102: why it happens and the three-minute fix." Not "Solving your toughest field problems."
Tags barely matter, and YouTube says so.
YouTube's own documentation: tags "play a minimal role in your video's discovery," and the stated use case is catching common misspellings. Title, thumbnail and description are named as the metadata that matters (YouTube Help).
A defensible standard is about five tags: brand, product or model number, and known misspellings and alternate part numbers. If your SOP still has a 30-tag research step, that is a line item you can delete this week. Anyone can check the source in ten seconds.
Related correction: zero tags on a video is a hygiene miss, not a findability crisis. An audit that flags untagged videos as a serious problem is weighting a field the platform has told you is close to irrelevant.
Chapters fail silently if you break the spec.
- At least three timestamps.
- Listed in ascending order.
- The first must be
00:00. - Each chapter at least 10 seconds long.
Break any one of these and chapters do not render. No warning, no error (YouTube Help). This is the single most common reason a team believes it has added chapters and sees nothing happen.
Add them to anything over about eight minutes, and name each chapter as the question it answers rather than as a section label. "Setting the instrument height" beats "Part 2."
Three hashtags, at the end.
YouTube shows only the top three most engaging hashtags by the video title. If a video or playlist carries more than 60 hashtags, YouTube ignores every hashtag on it, and over-tagging or misleading tagging can lead to removal (YouTube Help). The 15-hashtag limit quoted everywhere does not appear in the documentation.
Check Advanced features per channel, or your links are just text.
Clickable links in long-form descriptions require Advanced features, which need ID or video verification and are granted channel by channel (YouTube Help). Links in Shorts descriptions are non-clickable regardless (YouTube Help).
If your organization runs several regional or business-unit channels, check every one of them. A single unverified channel means every call to action on it is silently rendering as plain text.
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