Auto captions
Auto Captions for Video — Generate, Edit and Style
Turn speech into visible, editable captions that stay with your exported video. Review the wording, choose a style, preview the timing, and finish the captioned MP4 on this page.
Free to start, no signup required. Free video exports are up to 720p with a small watermark; watermark-free HD exports and subtitle files require Pro or Max.
Your original video stays on this device. Only the extracted audio needed to generate captions is processed.
See Styled Auto Captions on a Real Video
See the caption design on the actual video, not just as plain transcript text. This example uses a real SubtitleGenerator export so you can judge the font, placement, timing and motion in the finished MP4.
Real SubtitleGenerator export
Keep captions readable in the frame
Preview the captions against the actual video, then adjust font, color, background, outline, position and alignment. Fit the text to the frame without covering the subject or important on-screen details.
Preview word-timed motion before export
Choose a style with highlighting or motion, then play the section before exporting. The preview uses the same subtitle timing as the export, so you can check the pacing before downloading the video.
How This Auto Caption Generator Works
The complete caption workflow stays on this page.
Step 1 — Choose a supported video
Choose an MP4, MOV, WebM or MKV file from this device. Your original video stays in your browser while SubtitleGenerator checks its length and file size against your plan limits.
Step 2 — Generate timed captions from speech
Start generating captions and follow the progress on screen. The auto caption generator creates timed text from the spoken audio, ready for you to review and style in the editor.
Step 3 — Review the words and choose a style
Correct names or phrases, adjust when captions appear and disappear, and preview a style on the real video. Automatic captions stay editable, so you can fix the generated draft before export.
Step 4 — Export the captioned video
Export an MP4 with the captions visible in the picture. If another platform or editor needs a separate subtitle track, Pro and Max also let you download a subtitle file.
Make Automatic Captions Match Your Video
Start with one of 33 caption styles
Choose a built-in style and preview it on your video. All 33 styles are available on Free, Pro and Max. Your plan changes video limits and export options, not which styles you can try.
Change font, color, background and position
Tune the text for the footage instead of accepting a one-size-fits-all template. Adjust the font, size, color, outline, background, alignment and position while the video remains visible.
Add highlighting or motion where it helps
Use word highlighting or animation when the pacing calls for it, and keep a simpler treatment when readability matters more than movement. Preview the choice before committing to the export.
Captioned Video or Subtitle File?
| Compare | Captioned MP4 | Subtitle file |
|---|---|---|
| Best for | Keeping the captions and their visual style visible everywhere the video plays. | Giving viewers, a platform or an editor a separate caption track. |
| Can viewers hide it? | No. The captions are part of the video picture. | A supported player can usually show or hide a separate caption track. |
| Keeps SubtitleGenerator styling? | Yes, because it is part of the exported picture. | Partly. ASS and SSA can carry settings such as font name, color, outline and position, but players may not reproduce every detail or word-by-word animation. |
| Free plan | Up to 720p with a small watermark. | Not included. |
| Pro or Max | Watermark-free HD video. | Eight formats: SRT, VTT, ASS, SSA, SBV, SMI, TXT and JSON. |
Review Auto-Generated Captions Before Publishing
Check words that may need attention
Open flagged words in context, listen to the matching moment and correct the text. “All clear” means no review flags remain; preview the finished video before publishing.
Correct the words and timing without losing your style
Edit a subtitle, move its start or end time, or add a missing line in an empty gap. You can select one passage and generate its captions again; sign in free for a longer range. Your caption style stays in place while you fix the words.
Creator Workflows
TikTok, Reels and vertical video
Preview the caption position inside a vertical frame and export the text burned in when the visual treatment is part of the post.
YouTube videos and Shorts
Use a captioned MP4 for fixed styling, or choose a separate subtitle file when viewers need control over the track.
Add captions to YouTube videos
Premiere Pro and DaVinci Resolve
Download a timed subtitle file when the final caption placement and finishing work belong in a desktop editor.
Can You Start for Free?
Yes. You can generate, review, edit and style the captions for free. Without an account, you can try one video up to 10 minutes; a Free account includes 60 minutes of subtitle time each month. Free video exports are up to 720p with a small watermark. Pro and Max unlock subtitle files and watermark-free HD video. PAYG only adds time; it does not unlock subtitle files, HD or watermark removal.
Frequently Asked Questions
What are auto captions?
They are timed text generated from the speech in a video. In this workflow, you can review the words, change the visual style and burn the captions into the exported picture instead of leaving the result as a plain transcript.
What is the difference between captions and subtitles?
The terms often overlap. Here, captions are visible text designed for the video frame, while a subtitle file is a separate timed track for a player or editor. Choose based on whether the styling must stay fixed in the picture.
Can I edit and style the generated captions?
Yes. Edit the words and timing, then change the font, color, background, outline, position, alignment, highlighting or motion. Preview the real frame before export so the captions remain readable.
Can I burn captions into the video?
Yes. Export a captioned MP4 to make the text and visual style part of the video picture. Burned-in captions cannot be hidden by the viewer. Free exports include a small watermark; Pro and Max add watermark-free HD video.
Can I also download a subtitle file?
Yes, with Pro or Max. SRT, VTT and other text-first formats carry words and timing. ASS and SSA can also carry some style settings, but a separate file may not reproduce every visual detail or word-by-word animation in every player.
What video formats can I use?
You can start with MP4, MOV, WebM or MKV. SubtitleGenerator checks the video's length and file size against your plan limits before it starts generating captions.
Do free auto-caption exports have a watermark?
Yes. Free video exports are up to 720p with a small watermark. Pro and Max unlock subtitle files and watermark-free HD video. PAYG only adds subtitle time; it does not unlock subtitle files, HD or watermark removal.
Create Auto Captions for Your Video
Choose a video above, review the words and leave this page with a styled result you have actually previewed.
Choose a videoFree to start, no signup required. Your original video stays on this device.