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Auto Caption Generator for Video
Start free in the browser. Upload a video, choose your language, generate automatic captions, review timing, edit the caption text, and export SRT or VTT subtitle files. Supports 40+ languages.
1Upload your video
Import or drag your videoMP4, MOV, WebM, AVI, MKV • Up to 1GBSubtitle files export at any size. Captioned-video export is limited to 50MB.
Generate, edit, and export video captions.
AutoCaption is built for creators and teams who need a practical caption workflow: upload the video, generate timestamped subtitles, review the transcript, style the captions for Reels, Shorts, TikTok, YouTube, or a long-form upload, and export files for publishing. For a language-specific workflow, use the Roman Urdu caption generator.
Review
Fix names, slang, mixed-language phrases, and line breaks before export.
Export
Download subtitle files such as SRT or VTT, or use the editor export options.
AI caption generator questions
How do I auto caption a video?
Upload your video, choose the caption language, generate the timed draft, review the words and line breaks, then export the subtitle file or styled video you need.
Can I create automatic captions from a video file?
Yes. AutoCaption creates an automatic timed caption draft from an uploaded video, then keeps the text, timing, line breaks, and style editable before export.
Can I make captions for Reels, Shorts, TikTok, and YouTube?
Yes. Generate captions from the video, review the transcript in the editor, then adjust line breaks and style for the frame you plan to publish. You can export subtitle files or use the captioned-video export option shown in the editor.
How does the AI caption generator work?
Upload a video, choose a target caption language, and AutoCaption creates a timestamped caption track you can review before export.
Can I generate captions for free?
Yes. You can generate and preview captions for free. Exporting SRT, VTT, text, or captioned video files requires Pro, Business, or a one-time single-export purchase.
Can I edit the captions before downloading?
Yes. After generation, you can correct caption text, adjust timing, choose a style, and then export the finished subtitle workflow.
Which caption files can I export?
AutoCaption supports common subtitle exports including SRT and VTT, plus text and styled video export options shown in the editor.
Does AutoCaption support multilingual videos?
Yes. AutoCaption supports 40+ target languages, including Roman Urdu, Hindi, Arabic, Persian, Spanish, French, and English.
Caption guides
More caption workflows to review.
Read the guide that matches the video you are preparing, then return to the caption generator when you are ready to upload.
What a Caption Needs Beyond the Words
Automatic captions transcribe speech and nothing else. The speaker, the sounds that matter and the tone are a manual pass, with settled conventions worth following.
Two Reasons Subtitles Show the Wrong Characters
Garbled letters and stray markup look similar and have nothing in common. How to tell encoding faults from escaping faults, and why SRT and WebVTT disagree.
Right-to-Left Subtitles: What Breaks and What Does Not
Urdu and Arabic subtitle files hold no direction at all. What that means for line breaking, character limits, punctuation and fonts.
Captioning Two Speakers: Voice Spans, Names and Dashes
Automatic captions transcribe words, not speakers. How WebVTT marks who is talking, what SRT can do instead, and what conversion does to both.
Where Captions Go: Positioning in WebVTT, and Why SRT Cannot
Captions covered by platform buttons? SRT has no positioning syntax at all. WebVTT does, and converting to SRT throws it away for good.
Subtitle Character Limits and Why Tools Miscount
Most subtitle tools count code units, not what a reader sees. Kannada measures at double. What grapheme counting fixes, and what it does not.
Hinglish or Devanagari: Which Script for Hindi Subtitles
Roman letters or Devanagari changes who can read your captions, how consistent the spelling is, and the reading speed of every cue. How to choose.
Your Caption File Is Already the Transcript
A shipped SRT has been proofread once already. Strip the timing, pick the right shape for show notes or an article, and keep one source of truth.
How to Translate Subtitles Without Breaking the Timing
Translation keeps every timestamp but changes how much text sits in each cue. What to re-check after translating, and what never to translate.
Subtitle Shows Boxes or Question Marks: Fix Encoding
Garbled subtitle text is almost always the wrong character encoding. How to save as UTF-8, why BOM matters, and the mistake that makes it permanent.
Subtitle Reading Speed: How Fast Is Too Fast
Characters per second explained, the limits Netflix publishes, why short-form video needs shorter lines, and how to bring a fast caption down.
How to Fix Out-of-Sync Subtitles: Offset and Drift
Three faults look identical and need different fixes. Diagnose a constant offset, frame-rate drift, or a few broken cues, then correct the file.
How to Add Urdu Subtitles to a YouTube Video
Choose Urdu script or Roman Urdu, upload the track in YouTube Studio, and review the words that automatic transcription usually gets wrong.
Burned-In or Separate Subtitles: What Platforms Need
Reels and TikTok ignore a subtitle file, YouTube and web players want one. How to decide per destination and keep a single editable source.
How to Add Roman Urdu Captions in CapCut Without Retyping
Stop typing Roman Urdu caption lines one by one. Review a Latin-script SRT first, import it into CapCut Desktop or Web, then style and sync the caption blocks.
AI Video Captioning in 2026: What to Automate and Review
A practical guide to AI video captioning workflows: transcription, editing, translation, subtitle export, and what still needs human review.
AI Video Editor vs Manual Editing: 2026 Comparison
A practical side-by-side of AI caption workflows and manual editing, with guidance on when to automate and when to review by hand.
How to Edit Videos for Social Media: A 2026 Workflow
A step-by-step social media video editing workflow for master cuts, vertical framing, caption review, platform versions, team handoff, and export.
Repurpose YouTube Videos into Shorts with Better Captions
A caption workflow for turning long YouTube videos into vertical Shorts, with timing, review, line break, and export checks.
Podcast Clip Captions for Reels, TikTok, and Shorts
A caption review workflow for turning podcast clips into readable social videos with speaker names, line breaks, and export checks.
How to Choose a Caption App for Video
A practical checklist for choosing a video caption app: editable drafts, timing review, export formats, and repeatable styles.
Captions vs Subtitles: What Creators Need to Know
A plain explanation of captions, subtitles, open captions, closed captions, and what each means for video publishing.
What Is a VTT File? SRT vs VTT for Video Captions
Learn when to export SRT or VTT for YouTube, Vimeo, HTML video, client handoff, and archives, with syntax and review checks.
Caption Line Breaks for Reels, TikTok, and Shorts
How to review caption line breaks for short-form vertical video so captions stay readable on phone screens.
UGC Video Captions for Product Demos
A caption review workflow for UGC product demos, with product-term checks, safe-zone placement, mixed-language review, and brand handoff exports.