AI content creation12 min/youtube

YouTube tools: Shorts, Reels and thread chains

Cut long video into vertical clips on your own machine, and turn a video into a thread chain on the web.

Last reviewed 2026-07-20

There are two separate YouTube tools, and they solve different problems.

  • YouTube → Threads — runs in the web app at /youtube. An AI watches the video and writes a thread from it. Costs 0.2 credit per generated thread.
  • YouTube → Shorts/Reels — runs in the Dukun Ads desktop app at /clip. It cuts long video into vertical clips with burnt-in subtitles, processed locally on your own computer.

Step by step

  1. Turn a video into a thread chain

    Open /youtube and paste one video URL per line into ➕ Add video, then press + Add Video.

    To work in bulk, use 🔎 Or extract every video from a single YouTube page: paste a channel URL (like youtube.com/@name/videos), a playlist or a search result, press 🔎 Extract URLs, then pick from the thumbnail grid and press + Add Selected.

  2. Configure the generation

    Under ⚙️ Generation settings, write the prompt that describes the thread you want — what to extract from the video and in what voice. Choose the Gemini model that watches the video, and set Max characters / post (200 to 480; 400 is a good default).

    Optionally add an Affiliate product: a product name and link. When set, the AI weaves in a soft-sell and places your link in the final post of the chain rather than the first.

    Press ⚡ Generate All New. Each video takes roughly 20 to 60 seconds while the model watches it, and a progress bar tracks the batch. Do not close the page during generation.

  3. Edit and publish the chain

    The page has three tabs — 🎬 Video Added, ✅ Post Ready and 🚀 Posted — with counts. Open a ready row with View / Edit to see one editable textarea per part of the chain. The first part automatically carries the YouTube thumbnail.

    Choose the Threads account, then either 🗓 Schedule Chain with a start time or ⚡ Post Now. Parts are numbered and published two minutes apart so the chain reads in order.

  4. Cut clips: choose the source

    In the desktop app, open 🎬 Youtube → Shorts/Reels. Step 1 offers three sources:

    • YouTube URL — paste a link. You also select which browser's sign-in cookies to use, because YouTube may require a logged-in session.
    • Upload long video — choose a file from your computer. Use this if a URL is blocked.
    • 📥 Downloaded — reuse a video you already pulled down, without downloading it again.
  5. Cut clips: set the options

    Then configure the cut:

    • Clip length — 10–20s, 20–30s, 30–60s or 60–120s.
    • Max clips — how many to produce.
    • Which parts?🤖 AI picks best moments for unscripted talks, or ✂️ Sequential chunks for tutorials where order carries the meaning.
    • Subtitle accuracy — a fast light model or a slower, more accurate one. The model downloads once, then runs offline.
    • Aspect ratio — keep the original, pad to fit the target ratio, or crop to fill it. Ratios available: 9:16, 4:5, 1:1, 16:9, 4:3.
    • Base caption — the caption applied to clips before you edit them individually.

    Press ⚡ Cut clips. Cut more than you need — judging clips is fast, producing them is not.

  6. Style the subtitles

    Step 2 is subtitles and captions. Choose the subtitle type (generated from speech, a caption plus part number, or none) and style them: position, size, colour, font, and a nudge slider for vertical position.

    You can generate subtitles per clip or for all clips at once, and each clip has a live preview with an editable caption.

  7. Schedule the clips

    Step 3 queues everything. Pick the accounts to post to — Facebook Pages and TikTok accounts are supported here — set a start date, how many clips to publish per day (1 to 6), and the posting times in Malaysia time.

    Press ✅ Upload & schedule and the clips are spread across the days accordingly. Two clips a day from one video covers most of a week.

Tips

Limitations to know

  • Thread chains are currently one post per chain — sequential chains are marked coming soon.
  • The first post of a chain always carries the video thumbnail.
  • Clipping requires the desktop app; the web page explains this rather than offering a fallback.
  • Clip scheduling targets Facebook Pages and TikTok accounts.

Keep reading

Browse all 11 tutorials, or read the blog for strategy and background.