To make Japanese and Korean short video ads with Seedance 2.5, follow these steps:
- Write one brief per market.
- Generate 3–4 vertical 9:16 shots in Seedance 2.5, with no on-screen text.
- Keep the same character and product references across every shot.
- Add localized copy and subtitles in a video editor.
- Have a native speaker review each version before launch.
Seedance 2.5 produces the footage. The Japanese and Korean words are written and checked by people.
As of Oct 12, 2026. Model background: ByteDance Seed announced Seedance 2.5 on its official blog on July 31, 2026 (seed.bytedance.com). Always check each ad platform's official spec page before exporting.
What is a Seedance 2.5 short video ad?
A Seedance 2.5 short video ad is a vertical clip, usually under a minute, built from AI-generated shots for feed-style platforms. The shots come from text prompts or reference images. Ad length and file specs differ by platform, so this guide doesn't assume any fixed limit.
Why do Japanese and Korean ads need their own workflow?
- Subtitles: Japanese and Korean subtitles need different line breaks and reading pace than English. Word-for-word translation often sounds unnatural.
- Generated text: AI video models can draw broken characters when asked to render text. That's why this workflow adds all text afterwards.
- Tone: Politeness level, claims and humor vary by market. A native reviewer should approve the script.
How do I write the brief for each market?
| Field | Japan (example) | Korea (example) |
|---|---|---|
| Audience | Office workers, 25–35 | University students, 19–25 |
| One message | "Lunch prep in 5 minutes" | "Your study desk, upgraded" |
| Call to action | 購入はこちら | 지금 구매하기 |
| Tone | Calm, polite | Upbeat, casual |
These rows are teaching examples, not research data. Replace them with your own audience data.
How many shots does a short ad need?
Plan 3–4 shots:
- A hook
- The product in use
- A detail close-up
- An end card
How do I generate the shots in Seedance 2.5?
- Open Seedance 2.5.
- Choose a 9:16 aspect ratio.
- Write one prompt per shot: subject + one action + camera move + lighting + "no text, no captions".
- If you have a product photo, start from that image so the product keeps its real look.
Japan hook prompt:
Vertical 9:16. A young office worker in a bright Tokyo apartment kitchen opens a bento box and smiles. Slow push-in, soft morning window light, realistic, no text, no captions.
Korea hook prompt:
Vertical 9:16. A university student at a tidy desk in a small Seoul studio places a lamp and notebook, then nods. Gentle handheld orbit, warm evening light, no text, no captions.
For more phrasing, see Seedance 2.5 prompt examples.
How do I keep the same person and product in every shot?
Reuse the same reference image and the same written description in every shot. Change only the action and the camera.
How do I add Japanese and Korean subtitles?
- Write the source script.
- Have a native speaker translate and localize it.
- Re-break the lines for each language.
- Burn the subtitles into the video, or export a subtitle file if the platform supports one.
The full process is in How to add subtitles in English, Japanese and Korean.
Seedance 2.5 vs. a traditional shoot: which fits which task?
| Task | Seedance 2.5 | Traditional shoot |
|---|---|---|
| Testing several visual concepts | Fast to iterate | Each concept needs a shoot day |
| Exact product labels | Check and sometimes repair | Reliable |
| Local talent and dialogue | Limited; add voice and text afterwards | Native talent on set |
| Localized copy | Written by people | Written by people |
What should I check before launch?
- ☐ 9:16 frame, with the subject inside the safe area
- ☐ No AI-drawn text in the footage
- ☐ Subtitles approved by a native speaker in each language
- ☐ Product looks the same in every shot
- ☐ Every claim can be backed up
- ☐ Call to action and end card in the local language
- ☐ Commercial-use rights confirmed for your plan
FAQ
Can Seedance 2.5 write Japanese or Korean text inside the video? Don't rely on it. Generated characters can come out wrong. Add the text in an editor.
Do I have to write prompts in Japanese or Korean? No. Describe the scene clearly, and localize the copy separately.
How many versions should I make? At least one per market, with local casting and settings. Test the versions against each other on the platform.
Which aspect ratio should I use for Japanese and Korean short video ads in Seedance 2.5? Use 9:16 vertical and keep the subject inside the safe area. Check each ad platform's official spec page before you export.
When was Seedance 2.5 released? ByteDance Seed announced Seedance 2.5 on its official blog on July 31, 2026.
Next step
Generate your first 9:16 hook shot in Seedance 2.5, then localize it with the subtitle steps above.
About Seedance2Video
Seedance2Video (seedance2video.io) is an independent website for creating AI videos with Seedance 2.5 from text prompts or reference images. It is not affiliated with ByteDance. You can start on the Seedance 2.5 tool page.
