AI caption generator
AI caption generator: automatic captions for any video
By the Samsaam team · Updated
An AI caption generator listens to the speech in a video and writes it as timed, on-screen captions automatically — no typing and no manual syncing. Samsaam is an advanced video captioning app that does this and then goes further: smooth animations and professional presets inspired by the quality of Adobe After Effects.
Samsaam listens to your video, writes every word with its own timestamp and turns the transcript into captions you can style, animate and export. It supports 90+ languages, with up to 99% accuracy on clear speech.
Upload an MP4, MOV or WebM file (or audio on its own), choose the spoken language and the script you want the captions written in, and the first draft is ready to edit in about a minute for a short clip.
How Samsaam generates captions
- Upload a video or audio file. Large files are sent in parts, straight to storage.
- Pick the language from 90+ options and the writing system — for example Hindi in Devanagari or in Roman letters (Hinglish).
- Get word-timed captions. Every word carries its own start and end time, which is what lets word-by-word animation land exactly on speech.
- Edit text, timing and line breaks in the editor, word by word.
- Style and export with a template, then download SRT, VTT, ASS, TXT or DOCX, or render the captions into the video.
What makes it different from a basic auto-caption tool
30+ animated templates
Styles modelled on the captions top creators build by hand — see the template library.
Important captions
Show only the key statements instead of every word. How important captions work.
90+ languages
Including Urdu, Hindi, Bangla, Tamil, Punjabi, Pashto and Arabic, with native-script and Roman output. All languages.
Professional exports
Subtitle files, burned-in renders up to 4K on paid plans, and green-screen or alpha-channel overlays for editors.
40+ animations
Entrance and exit motion per caption, per word or per letter. Animated captions.
Why add captions to your videos?
Most short-form video is watched on a phone, often with the sound off, so captions are what carry the message in the first seconds. They also make a video accessible to deaf and hard-of-hearing viewers and to people watching in a second language, and a transcript gives platforms more text to understand what the video is about. Animated captions add one more thing: they pull attention to the words that matter.
AI captions vs the auto captions built into apps
| Built-in platform auto captions | Samsaam | |
|---|---|---|
| Where they work | Only inside that one app | Burned into the video, or as subtitle files for any platform |
| Styling | A few basic styles | 30+ animated presets, your own fonts and colours |
| Animation | Minimal | 40+ entrance and exit animations, per word or letter |
| Editing | Basic text fixes | Word-by-word text, timing and emphasis editing |
| South Asian scripts | Varies by app | Native script or Roman letters (Hinglish, Roman Urdu) |
Who uses an AI caption generator like this
Short-form creators captioning Reels, TikToks and YouTube Shorts; podcasters cutting clips; agencies and editors who need caption files for Premiere Pro or DaVinci Resolve; and anyone publishing in more than one language.
Frequently asked questions
How accurate are Samsaam captions?
Up to 99% on clear speech. Accuracy depends on the recording — background noise, overlapping speakers and heavy music lower it — which is why recording close to the mic and a quick review in the editor are part of the workflow.
Is there a free plan?
Yes. The free plan lets you caption 3 videos and preview them with a watermark. Exporting subtitle files or rendered video needs a paid plan — see pricing.
What is the difference between AI captions and auto captions?
They usually mean the same thing: captions written automatically from speech. The difference between tools is what happens next — how accurate the words are, how editable the timing is, and whether the captions can be styled and animated or only shown as plain text.
Which caption AI works for Hindi and Urdu videos?
Samsaam was built first for South Asian languages. It captions Hindi in Devanagari or Hinglish and Urdu in Nastaliq or Roman Urdu, alongside Bangla, Punjabi, Tamil, Pashto and more. See all languages.
Which file types can I upload?
MP4, MOV, WebM and audio-only files. The maximum file size and video length depend on your plan.
Can I edit the captions after they are generated?
Yes — text, timing, line breaks, style and animation are all editable in the browser-based editor.
Caption your next video with Samsaam
Animated captions in minutes, starting on the free plan.