TikTok micro-series teaser: cut a vertical trailer from an episode

A micro-series teaser is a short vertical clip cut from an episode that ends before the payoff. TikTok's June 29, 2026 Growth Max post describes micro-series as snackable episodes, published either in the Minis Center or through the Drama Center, then promoted with Growth Max. That page gives no teaser specs, so the file rules come from TikTok's ad pages for the placement you buy. Sume can cut the teaser with Video trim, or generate an opening shot with Seedance 2.5.

What does TikTok say about micro-series?

The post says micro-series can be discovered organically through touchpoints such as Search and the For You feed. Brands publish in one of two ways, and both are described with monetization options. It cites a 52% increase in incremental audience reach beyond off-platform acquisition campaigns, and a 10x increase in advertiser scale for promoting on-platform Mini Dramas plus off-platform apps, with footnotes that point to TikTok's internal data.

What makes a good teaser cut?

The aim is a clip that works for a viewer who has not seen the series: a hook line in the first seconds, one clear conflict, and a cut before the answer. Choose a 10 to 20 second range from the middle of an episode and put the most legible line first. Avoid scenes that depend on earlier episodes unless the on-screen text explains them.

The page does not say how long a teaser should be, so check the ad specs of the placement you book, such as the Spark and Reach and Frequency pages, before you fix the length.

How do you cut it with Sume?

Video trim takes a clip on media.sume.com and cuts the range you give with start plus one of end or duration (0.2 to 900 seconds) for $0.02 per job. Pass output with a width and height from 256 to 2160 and fps of 24, 25, 30 or 60 to get a vertical file, and audio: "keep" to keep the sound. An Idempotency-Key is required.

To join two ranges from different episodes, put both in Timeline as slots with a fade between them; that renders 1080x1920 by default at $0.10 per output minute, rounded up.

curl -X POST https://api.sume.com/v1/video-trim \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: teaser-ep3-001" \
  -d '{
    "video_url": "https://media.sume.com/artifacts/artf_demo/episode3.mp4",
    "start": 41.5,
    "duration": 15,
    "audio": "keep",
    "output": {"width": 1080, "height": 1920, "fps": 30}
  }'

Can you generate an opener instead?

If you have no episode yet, Video Router can pin seedance-2.5, which accepts 4 to 30 seconds at 480p, 720p or 1080p, with aspect_ratio set to 9:16. The doc's example is a 720p, 12 second, vertical clip. Billing is the provider list price times 1.25. For new integrations the doc recommends POST /v1/videos with model: "sume/auto", which defaults to 720p and 8 seconds.

A generated opener makes a trailer, not an episode, so label what the viewer is getting. Keep the same look in your episodes and the generated shot, and use the same title text in both so the series reads as one.

How many versions should you cut?

A series gives you many trims from one source. Cut three teasers from three episodes, or three ranges from one, and name them by the line they open with. Each trim is $0.02, so a set of six costs twelve cents before any Timeline join. Run Video inspect on each result to confirm the probe shows audio and the expected duration.

TikTok's page frames Growth Max as using ad automation and onsite signals, so it is reasonable to give the system several creatives rather than one. The page does not state a creative count for micro-series, so check the setup flow in Ads Manager for that.

What should you check before you promote it?

Check the teaser against the ad policy that applies to any in-feed video: audio that is clear, legible text, no QR codes, and a caption that matches the video. Then confirm in Ads Manager which placements your Growth Max setup uses, and format to those pages. Keep the teaser's last frame on the series title so a viewer knows what to look for.