★★★★★
AI caption accuracy blew past my expectations. CapCut used to mangle words; now it usually passes on the first pass. I save nearly an hour of timeline work on every video.
✦ Core feature 01
AI caption generation
From speech or on-screen text
After upload you can transcribe speech (Mandarin / English) or read hard-subs on screen, then get timed captions. Review line by line, tweak styles, and export SRT / VTT or burn into MP4 — all in the browser.
- Speech-to-text: Mandarin and English
- Or read on-screen text, or import SRT / VTT
- Visual caption editor with live style preview
- Export captioned MP4, SRT, VTT, and more
- Fully custom fonts, colors, position, and background
AI caption preview
00:05 → 00:09Hey everyone, welcome to my channelEditable
00:09 → 00:14Today I'm sharing a tool that...AI generated
00:14 → 00:19really 10x'd my efficiencyEditable
Export captioned MP4
Export SRT
🎙️ Core feature 02
AI dubbing
Cue by cue, mix and export in one tap
Paste copy or turn captions into voiceover, synthesized along the timeline. Chinese uses 晓晴; English offers multiple voices. Speed can follow caption duration. Original audio is kept by default and written to an extra track.
- Chinese 晓晴, multiple English Kokoro voices
- Speed can follow caption duration; Chinese tone and pace are adjustable
- Captions to voiceover, same timeline
- Multi-track mix — dubbing and original audio together
👩
晓晴 · Female
👩
Heart · Female
🧑
Adam · Male
🌍 Core feature 03
AI multilingual caption translation
30+ languages, bilingual display
After captions are ready, pick one target language. The original timeline stays. Translate across 30+ languages including Chinese, English, Japanese, and Korean. Turn on bilingual captions to show source and translation together.
- 30+ languages — Chinese, English, Japanese, Korean, German, French, Russian, and more
- Bilingual captions on the same frame — ideal for global content
- Keeps the original caption timeline — no re-timing
- Context-aware translation that keeps technical terms intact
Hey everyone, welcome to my channel
Hello everyone, welcome to my channel
✓ Translated
Today I'm sharing a productivity tool
Today I'm sharing a productivity tool
✓ Translated
It really 10x'd my efficiency
It truly boosted my efficiency tenfold
✓ Translated
0creators using it
ZH / ENspeech-to-text languages
0languages supported
0faster post-production
🖼️ Core feature 04
Smart cover generation
Keyframe capture + multiple templates
AI finds the strongest frames, overlays title text and a visual template, and exports sizes for Bilibili, Douyin, and YouTube. No more wrestling with cutouts for a thumbnail.
- AI picks the best keyframes automatically
- Professional templates, apply in one tap
- Export 16:9 / 1:1 / 9:16
- Fits Bilibili, Douyin, YouTube, and WeChat Channels
16:9
1:1
9:16
🎬
Template 01
✨
Template 02
🔥
Template 03
💡
Template 04
🚀
Template 05
🎯
Template 06
Download cover
Regenerate
📝 Core feature 05
AI script assist
Keywords → a full script
Enter a topic or keywords and AI drafts a complete video script. Built-in styles for explainers, stories, and how-tos. Send the copy straight to dubbing or captions so the loop stays closed.
- Keywords to a full video script in one tap
- Styles: explainer, story, comparison, tutorial
- Script to AI dubbing or captions in one flow
- Built-in hook structures to lift retention and comments
Topic: How to learn video editing in 30 days
Explainer
Storytelling
Comparison
How-to
Emotional
[Opening hook] Did you know most people take the long way around when learning to edit?
[Pain point] I once spent six months staring at the software every day…
[Solution] Then I found this method — from zero to publishing in 30 days…
[Value] Today I'll walk you through every mistake I made…
Captions in one tap
Dubbing in one tap
Copy all
📊 Plan compare
Free vs Plus
Every feature is available on Free. Plus unlocks unlimited runs and duration. Exports keep the source resolution.
| Feature / spec | Free | Plus Recommended |
|---|---|---|
| Captions · Dubbing · Translation | ||
| AI caption generation | 1 / month | Unlimited |
| AI dubbing | 1 / month | Unlimited |
| Multilingual caption translation | 1 / month | Unlimited |
| Covers · Scripts | ||
| AI cover generation | 1 / month | Unlimited |
| AI script / copy assist | 1 / month | Unlimited |
| Video specs | ||
| Where it runs | This browser | Dedicated high-performance remote device |
| Duration per run | ≤ 15 min | Unlimited |
| Suggested file size | Under 200MB, try 300–500MB | Under 200MB, try 300–500MB |
| Export resolution | Keeps source resolution | Keeps source resolution |
💬 Real user feedback
What creators say
More than 50,000 social creators use AI Video Factory to speed up post.
★★★★★
A must-have for global accounts. Translate an English video into Spanish and Japanese captions, layer AI dubbing, and one person does the localization that used to take a whole team.
★★★★★
After Plus I never worry about run limits. Everything stays in my dedicated space, so client videos don't leak. That alone is worth a lot to me.
Start now — no sign-up
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