Seonhwa · BrainsForYou

Explainer video maker

From one link to a video sized for each platform

Open the app · free →

Say "Make a 30-second TikTok explainer from this link" and it summarises the content, splits it into scenes, adds captions, narration and pictures and renders a video. Paste text or upload a document or photo instead.

Choose the size and length for YouTube (16:9), Shorts, Reels and TikTok (9:16), Instagram feed (1:1), Facebook (4:5), LinkedIn, X or KakaoTalk, from 15 seconds to 3 minutes. The finished video is shared together with ready-to-post title, caption and hashtags.

What you can do with it

Try saying this in the app

Make an explainer video: [link]Portrait 30 seconds for TikTokPost it to YouTube

Frequently asked questions

Can I make it on a phone?

Yes. It is built inside the browser and saved or shared as a file.

Can I use my own voice?

Narration is an AI voice; you can also use captions only.

What about copyright?

Videos from your own text and photos are yours. Use other people's links within summary and quotation.

How this differs from other AI apps

It remembers you. Names, family, appointments, tastes — say it once and it carries into the next conversation. Memory is stored on your own device, never on our servers.

Free, and meant to stay free. No ads, no third-party tracking. Only when heavy thinking is needed does that single question go to the AI provider you chose (Gemini, Groq, etc.).

31 languages, on phone or PC. Opens in the browser with nothing to install, and can be added to your home screen like an app.

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