Have you run into these too?
Every social creator has been through this. AI Video Factory makes it history.
Typing captions by hand takes forever
A 10-minute video can take 1–2 hours to caption manually, and the timeline still slips. Publishing slows to a crawl.
Voiceover is flat and hard to get right
Self-recording is noisy and retakes eat time; hiring talent is expensive; free TTS sounds robotic and drives viewers away.
Multi-platform sizing is tedious, going global is hard
Every platform wants a different size, and hand-tuning each one burns hours. Taking content overseas means translation that is slow and costly.
An all-in-one AI post toolkit
Five core tools cover the full post pipeline, so you can focus on the content itself.
AI caption generation
Upload a video, transcribe the audio or read on-screen text, and get timed captions. Edit styles visually, burn them into the video, or export SRT.
AI dubbing
Synthesize voiceover cue by cue and write it to an extra track. Original audio is kept by default. Chinese uses 晓晴; English offers multiple voices. Speed can follow caption duration.
AI multilingual caption translation
After captions are ready, translate them into a target language in one tap. Bilingual captions can show together so creators can take content overseas fast.
AI cover generation
From keyframes plus title text, AI builds platform-ready covers with typography and optional brand logo overlay.
AI script / copy assist
Enter a topic or keywords and AI drafts a full video script. Multiple style templates, multi-turn edits, and one tap to dubbing or captions.
The old way vs AI Video Factory
Same workload — AI saves you more than 90% of the time.
Transcribe captions line by line, then proofread again
50 minRecord voiceover or hire a voice actor
30 minNudge the timeline to match every line
20 minDesign a cover for each platform
15 minRender and wait in the export queue
5 min+Listen to audio or read the frame, generate timed captions
Review after recognitionPick a voice, generate natural dubbing in one tap
2 minTimeline auto-aligns with smart line breaks
AutomaticAI covers, auto-fit to each platform size
1 minProcess locally in the browser, download the MP4
5 minWhat creators are saying
Real experiences from real creators — not ads.
"A single episode used to eat a whole afternoon just for captions. Now I upload, wait two minutes, and the captions are there — accuracy is genuinely high. I've used it for three months straight, ship every week, and it keeps my channel alive."
"After upgrading to Plus it really is unlimited — I can process dozens of videos in a day. There are plenty of AI voices, and the female voice sounds natural. Clients can't tell it's AI, and I've saved a lot on outsourcing."
"We publish for a global audience, and multilingual caption translation saved me. English-to-Spanish and Japanese timelines stay locked — no manual tweaking. Combined with Plus dedicated space, I don't worry about data privacy at all."
"The Free plan was already enough to judge quality. I only upgraded when I ran out of quota. The checkout felt smooth, and Plus onboarding has a clear walkthrough — no tech background needed."
"AI script assist is surprisingly good. Type a few keywords, get a full voiceover draft, then turn it into captions in one tap. It removes the hardest writing step — perfect for a tech reviewer who doesn't love writing."
"Our MCN runs 20+ accounts, so batch processing is a must. Plus has no run or duration caps, and everything stays in our dedicated space — that meets our content-security bar. Highly recommend!"
Three steps to finish post
A simple flow — see a finished result in about a minute.
Upload a video
Supports MP4 / MOV / AVI / MKV. After upload we read duration and resolution, detect speech, then open the tool you picked.
Do just this one thing
Each run handles only the feature you selected. Afterward you can add translation, dubbing, or a cover on the same video. Caption lines are editable one by one.
Download the result
When the preview looks right, download a captioned MP4 and publish straight to Douyin, Bilibili, Xiaohongshu, and more.
From a free trial to unlimited use
Free runs in your browser. Upgrade to Plus for unlimited runs and duration, with exports that keep the source resolution.
You might be wondering
More questions? See the full Help Center, or contact us directly.
Can I use it without signing up?
What happens when the free runs run out?
What is Plus? Is setup complicated?
Which video formats are supported? How accurate is caption recognition?
Start now — no sign-up
Upload your first video and see AI captions in about a minute. Completely free, upgrade anytime.
✓ Free quota on first visit · ✓ No card required · ✓ Cancel anytime