Addcaptionstoany
video.
The most advanced AI captions out there. Upload a video and get captions timed to every word, on top or cut out behind you, in any language, with sound effects. Done in about a minute. No typing, no timeline.
Pick a look. Upload. Done.
Real results, straight out of Sleepy Motion. Press play, then use the look you like: it is set up for you, so all that is left is your video.
Horizontal too
Cold Comic
Comic-book captions with a cold, icy edge. Upload a 16:9 video and get it back horizontal, for YouTube, podcasts and the web.
Forget captions. Smart motion that lives behind your subjects
Vertical or horizontal · Up to 15 seconds on Free, 30 on paid plans, 2 minutes on Agency
AI-generated content may contain errors. By using this service, you agree to our Terms of Service.
Captions that keep people watching
A lot of people scroll with the sound off, so the captions decide whether they stay. Sleepy Motion turns what is said into captions that pop in on every word, in your fonts and colors, with sound effects timed to them.
Two ways: Classic puts the captions on top of your video, and Composite cuts you out on every frame and puts them behind you, the depth look from high-end edits. Placed by the AI, or pinned where you want them.
CompositeHow to add captions to a video
Upload your video
An MP4 or MOV, vertical or horizontal: up to 15 seconds and 35MB on Free, 30 seconds and 150MB on paid plans (2 minutes on Agency). Sleepy listens to what is said and writes the captions for you.
Pick a look and a language
Use one of the preset looks and everything is set for you. Or choose yourself: Classic puts animated captions on top of the video; Composite puts them behind you. Keep the language spoken or pick another one to translate the captions. Paste your script if you want it word for word.
Download
Ready in about a minute. Every word lands on time, with sound effects added for you. Download in 1080p, vertical or horizontal. Something to fix? Edit the words and timings and retry.
Questions
How do I add captions to a video automatically?
Upload your video to Sleepy Motion. It transcribes the speech, times every word and animates the captions on the video for you. No typing and no timeline.
Can I add subtitles in another language?
Yes. Pick a caption language and the captions come out in it, translated from what is said. Picking the language actually spoken helps the transcription be even more accurate.
How accurate are the captions?
They are transcribed from the speech and timed word by word. For a word-perfect result, paste your exact script before you generate. After it is done you can still fix any word or timing in the editor and retry.
Can the captions go behind me instead of on top?
Yes. Choose Composite and Sleepy cuts you out on every frame and places the captions behind you, the depth look from high-end edits.
Does it work with horizontal videos?
Yes. Upload vertical or horizontal footage, and get the captioned video back as a vertical 9:16 short or a horizontal 16:9 video.
Can it cut the pauses and mistakes too?
Yes, on every paid plan. Turn on AI edit and it edits your take like an editor before the captions go on: it cuts the pauses, ums and wrong starts, keeps the point, puts it in the best order and uses the take where you said it best, so a rambling take comes back tight.
Can I add captions to a video for free?
Yes. Free includes captions on videos up to 15 seconds, with a watermark. Paid plans, from Starter at $5 a month, remove the watermark, allow 30-second videos and add AI edit.
Want the words behind you? Text behind your subject. Long, rambling take? Let AI edit cut it. See all plans.