Readable at every size
Preview caption size and placement for desktop, TV, and phone viewers before export.
For YouTubers
Subtitle Generator That Grows Your YouTube Channel
Create and review subtitles for YouTube videos, tutorials, interviews, podcasts, and Shorts with CapsAI.
MP4 or MOV
video upload
3 min
free to start
11
spoken-language options
Features
Caption features for YouTube videos
Timing editor
Adjust caption timing so lines appear in sync with your edits and jump cuts.
Spoken-language options
Choose from 11 spoken-language options, including Hinglish. CapsAI does not translate captions.
Free to start
Try the workflow with 3 free minutes, then buy one-time minute packs with no subscription.
Long videos and Shorts
Caption full-length uploads and vertical Shorts. Processing uses minutes from your free allowance or one-time pack.
Word-by-word emphasis
Caption styles with word-by-word highlights draw attention to each word as it is spoken.
Workflow
Add Subtitles to Your YouTube Videos in 4 Steps
Step 1
Upload Your Video
Upload an MP4 or MOV video that you own or have permission to process.
Step 2
Generate a caption draft
Choose the spoken language and CapsAI creates timed captions from the speech in your video.
Step 3
Review and style
Correct the text and timing, then apply a caption style and check its placement.
Step 4
Export a captioned video
Export an MP4 with the captions burned in, using an option available to your plan.
Use Cases
Why YouTubers add captions
Viewers watching on mute
Captions let viewers follow your video when they cannot turn the sound on.
Accessibility
Captions make your videos accessible to viewers who are deaf or hard of hearing.
Names and terms
Review channel names, product names, and slang in the draft so captions match what you said.
Hinglish and Indian-language channels
Generate captions for videos recorded in Hinglish, Hindi, English, and other supported Indian languages.
FAQ
Frequently Asked Questions
How do CapsAI captions appear on YouTube?
CapsAI burns the captions into the exported MP4, so they appear on screen for every viewer. They are not a separate closed-caption track that viewers can turn off.
Can CapsAI translate my captions for international viewers?
No. CapsAI generates captions in the spoken language you select; it does not translate captions into another language.
Which files can I upload?
The uploader accepts MP4 or MOV video files. Audio-only files and pasted video URLs are not part of the caption workflow.
Can I download SRT or VTT subtitle files?
The export is an MP4 with the captions burned in. Separate SRT or VTT files are not available from the editor yet; the standalone converters under /tools work on subtitle files you already have.
How accurate are the captions?
Accuracy depends on audio clarity, background noise, accents, and language selection. CapsAI creates a first draft and lets you edit captions before export.
How much can I try for free?
You can start with 3 free minutes. Free video export may include a CapsAI watermark; watermark-free video export is listed as a paid-plan benefit.
Caption your next YouTube video
Upload an MP4 or MOV file, review the caption draft, and export a captioned MP4 for your YouTube videos. Start with 3 free minutes.
Try CapsAI Free →Related tools
YouTube Caption GeneratorCaption long YouTube videos such as tutorials, interviews and explainers, then export an MP4 with the captions burned in.Facebook Video Caption GeneratorAdd subtitles to Facebook videos, Reels, and Stories: generate a caption draft, style it for muted autoplay, and export an MP4 with the captions burned in.LinkedIn Video Caption GeneratorAdd subtitles to LinkedIn videos: generate a caption draft, choose a clean professional style, and export an MP4 with the captions burned in.Caption Videos for XAdd subtitles to Twitter/X videos: generate a caption draft, style it for muted autoplay in the timeline, and export an MP4 with the captions burned in.