YouTube Description Generator: Opening, Overview and Chapters
Paste the link to your video and the description generator writes 150–300 words from what you actually say: two opening lines worth reading, a short overview, and chapters with timestamps ready for YouTube Studio.
Download only videos you made or have permission to use. Tube Snip shows each video's license so you can check before you reuse it.
Understand any video without watching all of it
Each tool runs on the video you fetched. Costs are in credits; guests get a few free runs every day, and every account starts with free credits.
Fixes for the things that annoy you on other downloaders
We tested the popular sites and wrote down what went wrong. Each row below is something Tube Snip handles for you.
| What you need | Tube Snip | Typical downloader |
|---|---|---|
| Paste a bare video IDLike PdQ4n7wXy0s with no link around it | Works | "Something went wrong" |
| Share straight from the YouTube appInstall Tube Snip, then Share → Tube Snip | One tap | Copy, switch apps, paste |
| Sound in HD and 4K filesYouTube stores picture and sound separately in HD | Always merged | Silent files, unlabeled |
| An actual MP3Not an M4A renamed in the menu | MP3 128–320 kbps | M4A / WebA only |
| Just one part of a videoCut by time or by chapter, as MP4, GIF or MP3 | Built in | Download it all, edit later |
| AI transcript, summary and notesOn the same video, in the same window | 10 AI tools | Separate paid sites |
| Whole playlist at once | Pick videos, one queue | One by one |
| Error messages you can read | Says what to fix | Generic, wrong language |
Most people download a video to make something with it
So the next step sits in the same window. Run it on the video you already fetched.
Turn a long video into Shorts
Hook finder spots the best moments, then Snip a clip cuts them as 9:16.
Learn from a video without rewatching
Get the transcript, a timestamped summary, or study notes in seconds.
Ship your own uploads faster
Titles, tags, description and chapters from your own video, ready to paste.
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Updated
How to generate a YouTube description in 3 steps
- Paste the link to your video above. Public and unlisted videos both work: upload as Unlisted, write the description, then publish.
- Open the AI tab and choose Description. The tool reads the video's captions and writes a description in three parts: opening lines, overview and chapters.
- Copy it into YouTube Studio. Add your own links (shop, social, sponsor) at the end, and check the chapter titles read the way you'd say them.
A description run costs 2 credits. Without an account you get 3 free AI runs a day; a free account starts with 60 credits.
What the description looks like
| Part | What it does | Length |
|---|---|---|
| Opening lines | Say what the video gives the viewer, with the main search words early | The first two lines |
| Overview | A few sentences on what's covered and for whom | A short paragraph |
| Chapters | "0:00 Intro" lines that split the video into sections | One line per topic |
The opening matters most. Under the video, YouTube shows only the start of your description until someone taps more, and search results show a snippet of it too. Two clear sentences beat a wall of links.
Chapters: the part most descriptions skip
When a description has timestamps in the right format, YouTube turns them into chapters: the progress bar splits into sections, and viewers can jump to the part they need. YouTube's rules for chapters:
- The first timestamp must be 0:00.
- There must be at least three timestamps, in order.
- Each chapter must be at least 10 seconds long.
The description generator writes the chapters to fit these rules. If you only want chapters, the timestamp generator writes 4 to 12 of them on their own, for 3 credits.
Where do you paste the description?
On a computer (YouTube Studio)
Open YouTube Studio → Content, click the video and paste into Description on the Details page. Click Save. YouTube allows up to 5,000 characters, so there's plenty of room for your own links below the generated part.
iPhone and Android (YouTube Studio app)
In the YouTube Studio app, open the video, tap the pencil, tap Description, paste and Save. Tap Copy in Tube Snip first; the whole description, chapters included, goes to the clipboard in one go.
In other languages
Pick a language under Answer in to get the description in that language, then add it in YouTube Studio under Languages for the video, so viewers see it in their own language.
What should you add by hand?
The generator writes what the video says. You know what it can't:
- Links: your website, shop, newsletter, the products you mention.
- Sponsor disclosure, if the video is sponsored.
- Credits for music and footage you used, including Creative Commons attribution lines.
- Hashtags: YouTube shows up to three of them by your title, the ones it considers most engaging (YouTube Help).
- A pinned call to action, like "Subscribe for a new recipe every Friday".
YouTube description generators: Tube Snip vs other tools
When we asked Google's AI Overview and Perplexity for the best YouTube description generator in October 2026, vidIQ and Descript were among the tools they named, and many creators simply use ChatGPT. Each tool's facts below were checked on its own website on 19 October 2026. Whatever you use, YouTube's own tips for video descriptions still apply: describe the video in the first few lines, and use your main words in both the title and the description (up to 5,000 characters).
| Tool | What it is | Price | Install | Best for | Watch out for |
|---|---|---|---|---|---|
| Tube Snip | Web app | 2 credits a run: 3 free runs a day without an account, 60 credits with a free account | Nothing | 150–300 words written from what your video says, with chapters that follow YouTube's rules | The video must be public or unlisted, with speech or captions |
| vidIQ | Web app and browser extension | Free with a daily limit; paid plans for unlimited use | Optional Chrome extension | A quick draft from a title or topic | It writes from what you type, not from the video, and does not add chapters |
| Descript | Video editor (app and web) | Free plan with 100 AI credits a month; Hobbyist $16/month billed yearly | Desktop app or web | Creators who already edit in Descript: description and timestamped chapters from the transcript | Built into a full video editor, which is more than you need for one description |
| ChatGPT | General AI chatbot (web and app) | Free plan; paid plans | Nothing | Rewriting a description from notes or a transcript you paste in | Not made for YouTube: you give it the transcript, keywords and chapter format yourself |
Pick by situation. For a description and chapters from a video that is already online, Tube Snip. For a fast draft before you film, vidIQ. If you edit your videos in Descript anyway, use its built-in generator. If you already have a transcript and want to rewrite it by hand, any chatbot will help.
More tools for the same upload
- Titles: the title generator writes five titles under 70 characters from the same video.
- Tags: the tag generator writes 15 tags with a 500-character counter.
- A transcript for a blog post or show notes: the transcript generator.
- Captions in other languages: the subtitle translator turns your captions into SRT subtitles in 50+ languages.
Why description generation fails, and the fix
| What you see | Why | Fix |
|---|---|---|
| "This video has no captions" | The video is too new, or has no speech | Wait an hour after uploading, or upload your own captions |
| Chapters don't show on YouTube | Fewer than three timestamps, or the first isn't 0:00 | Keep the generated 0:00 line and at least three chapters |
| A chapter title is off | The topic change was subtle in the captions | Edit that one line in Studio |
| The video can't be found | It is Private | Switch it to Unlisted while you prepare it |
| "You have used today's 3 free runs" | The guest limit | Make a free account for 60 credits |
Who uses it
- Solo creators who'd rather spend the time on the next video than on writing descriptions.
- Podcasters who upload full episodes and need chapters for every guest topic.
- Teachers posting lessons where students jump to one part before an exam.
- Agencies managing many channels, with the same structure on every upload.
The rules
Descriptions should describe the video honestly; misleading descriptions break YouTube's spam and deceptive practices policies. Credit any footage or music you didn't make: your own, Creative Commons or used with permission.
Questions about this tool
Is the YouTube description generator free?
You get 3 free AI runs a day without an account. A description costs 2 credits, and a free account starts with 60 credits.
How long is the generated description?
Between 150 and 300 words: an opening, a short overview and chapters. YouTube allows up to 5,000 characters, so you can add links below it.
Does it add chapters automatically?
Yes. The chapters start at 0:00 and follow YouTube's rules, so the progress bar is split into sections once you save.
Why don't my chapters show on YouTube?
YouTube needs the first timestamp at 0:00, at least three timestamps in order, and chapters of 10 seconds or more.
Can I generate a description before publishing?
Yes. Upload the video as Unlisted, wait until YouTube has made its captions, then paste the link here.
Can I get the description in another language?
Yes. Choose one of more than 50 languages under Answer in, then add it in YouTube Studio under Languages.
What should I add myself?
Your links, any sponsor disclosure, credits for music and footage, and up to three hashtags.
Before you download
Why do some downloaders give me HD video with no sound?
In HD, YouTube serves picture and sound as two separate streams. Tube Snip downloads both and joins them, so every file in the Video tab plays with audio.
Can I paste just the video ID?
Yes. Paste the 11 characters after v= and it works the same as a full link. Shorts links, youtu.be links, embed links and links with a start time all work too.
How do I share a video from the YouTube app?
Install Tube Snip from your browser menu ("Add to Home screen" or "Install app"). Then in the YouTube app tap Share and pick Tube Snip; the video opens here, ready to download or summarise.
What are credits?
Credits pay for AI work. A transcript costs a few credits and a script blueprint costs more; the table above shows each tool. Downloading never uses credits. Unused monthly credits do not roll over; credit packs never expire.
Is downloading YouTube videos allowed?
Download your own videos and videos you have permission to use. Each result shows the video's license. Creative Commons videos can be reused with credit; standard-license videos need the creator's permission. We remove videos after valid copyright requests.
Which AI models do you use?
We route each tool to the model that does it best, from providers like Anthropic, OpenAI and Google. Best quality uses a stronger model and costs twice the credits.