Kriti Caption

Q: "This device could not finish the video"

Try a shorter clip, or press Get the words as a file and use the SRT file.

Add words to a video in one tap. Pick a style, fix any word, then save the captioned video to your phone.

Open the tool

This page shows you how to put moving words on a video and save it. You pick a video, pick a style and press Save.

What it does

Kriti Caption listens to the speech in your video and writes the words on it, word by word, in the style you choose. You can show the words in Roman letters, Hindi or Urdu and change between them without waiting.

Your video stays on your device. Only the sound is sent, and it is deleted once the words are written. The captions are drawn on your phone or computer, and Kritiverse adds no mark of its own to the video.

When to use it

You make Reels, Shorts or talking videos that people watch with the sound off.
You want to fix a word, a name or a time yourself.
You want the words as a subtitle file (SRT).

For the text of your post, use Post Writer. For a full edit with cuts, music and clips, send the captions on to Kriti Cut.

Step by step

Caption a video

In the menu, open Kriti Caption. Press Add video and pick a file. You can also drop a file on the box.
Watch the video while the tool works. It shows Reading your video, Listening, Finding words and Timing captions. Then the words appear on the video by themselves.
Open the Styles tab and tap a style. It shows on your own video at once.
Press Save video. On a phone it sits in the bar at the bottom, beside Captions only, transparent. Keep the page open while it saves. When you see Your video is ready, press Save to phone.

Everything else is optional. If you change nothing, you still get a good video.

Screenshot coming soon

The video with live captions and the Styles tab open

Fix a word

Open the Words tab.
Tap a word. Words in colour are the ones the tool is less sure of.
Type the right word. Leave Change everywhere in this video ticked to fix every place.
Press Save. A corrected word is remembered for your next video.

Change the lines

Open the Lines tab. Each caption shows its start and end time.
Tap a line. The video jumps there and the editor opens.
Change the text, or use Split here, Line break, Join next, Add line or Delete.
Change Start and End if the timing is off.

Screenshot coming soon

The Lines tab with one line open

Every option explained

On the video

Control	What it does
Play or pause	Starts or stops the video. Tapping the video does the same.
Move through the video	The bar under the video.
Undo and Redo	The two arrows beside the tabs. They step back and forward through every change, styles included.

Drag the words on the video to move them. They snap to Top, Middle and Lower. Pinch to make them bigger or smaller.

Under the video, Language spoken in the video lets you pick Hindi, English or Urdu. A new video starts in English, so pick Hindi or Urdu here when your video is in one of them. The first change on a clip is free. It writes the words again, so your line edits go, and the tool asks you first. Script switches the words between Roman, हिंदी and اردو. Your own typed lines stay as you typed them.

Styles tab

Control	What it does
Viral	One tap for the best free style, key words, a headline from your own words, and the frame for a wide clip. Each part stays editable.
All, Designer, Podcast, Explainer, Hype, News, Urdu	Filter the 40 styles.
Mine	Your saved styles. Save my style keeps the look, letter case, key word setting and max words per line.

A style with a lock and the tag Pro is a Pro style. You can try it on your video, but saving needs Pro. A style tagged New was added lately.

Text tab

Control	What it does
Size	Makes the words bigger or smaller.
Words at once	Show 1, 2, 3 or 4 words at a time, or the whole Line. Your edited lines are grouped again. Your text and word timing stay.
Position	Top, Middle or Lower.
Caption timing	Moves every caption Earlier or Later by whole frames, up to 6 either way. On the word is the starting point. The preview and the saved video move together.
Safe zone	Keeps the words clear of the app's own buttons. Auto follows the shape of your video, or pick Reels, Shorts or YouTube. Off lets the words go anywhere. Show guide marks the area on the preview, and the guide is never saved in your video.
Font	From the style, or a font for the script you are showing.
Text colour and Highlight colour	Colour swatches, your Brand Kit colours first when you have a kit, and Pick a colour.
Animation	None, Pop, Slide, Fade, Fill or Punch in.
Background	None, Box, Rounded or Band.
Case	As spoken, all small, ALL CAPS, First Letter Caps or First letter of sentence. It stays when you try another style. Hindi and Urdu letters have no capitals, so it works on Roman text.
Size rhythm	Even, or Small and big: one word goes huge on its own row and the others stay small around it, like a magazine title. The big word follows your key words. It works on any style.
Key word font	From the style, or a script, italic or bold serif face for the key words. Hindi and Urdu use their own matching fonts.
Key words	Makes the words that carry each line bigger and bolder. Pick Off, Light, Medium or Strong. A stronger setting marks more words. Choose words opens the Words tab so you pick them yourself.
Key word look	Colour or Box. Shown when Key words is not Off.
Emoji	Off, Few or Many.
Frame	Fit a wide clip in 9:16.
Auto contrast	Auto keeps the words easy to read on a bright or dark picture.
Headline	On or Off, and a line of up to 90 letters at the top of the video. Title bar puts it on a solid bar. Hook likho gives three headline ideas from your own words.

The Designer looks move below the speaker's face by themselves. Your device finds the face and nothing is sent. The finder downloads once, and is skipped on data saver. If you drag the words, your place wins.

Key words are found on your device, from numbers, names, strong and emotion words, English inside Hindi, and words said louder. Loud styles start on Medium, and calm styles start Off.

Captions are cut by sense, also on your device. Each sentence is read first, then broken at commas, pauses and the start of a new thought. Names and numbers stay whole, a Hindi or Urdu line closes on its verb, and no word is left alone on a line. Each caption shows on the frame its first word starts in. A style with a fade starts a little before the word, so you can read it as it is said.

Timeline

The timeline is opening step by step. If you do not see it yet, the Lines tab does the same edits.

Your captions sit as blocks on a timeline under the video, and the line in the middle is the playhead. Drag the timeline to move through the video. Pinch, or use + and −, to zoom. On a computer, hold Ctrl or Cmd and scroll to zoom. If your clip has sound, a soft shape under the blocks shows where the words are.

Control	What it does
Tap a block	Selects it and moves the video there. Tap it again to change its words in the Lines tab.
Handles on a selected block	Drag either end to stretch or shorten the caption, and its words stretch with it. Captions usually touch, so a handle can go into the next caption, which gets shorter but always keeps 0.2 seconds. The two times show while you drag. A handle sticks for a moment at the playhead, at the next caption and at the first and last word.
Drag a selected block	Moves the whole caption, words and all. It can go into the caption beside it in the same way, and pulling back gives that caption its time again.
Word edges	Zoom in on a selected block and each word shows at its own time. Zoom in further and an edge appears between two words. Drag it to give one word more time.
Split here	Cuts the caption at the playhead, in the gap between words, so a word is never cut in two.
Start here and End here	Moves that end of the caption to the playhead. If it cannot reach that far, a line under the timeline says so.
Join next	Makes this caption and the next one a single caption.
Duplicate	Adds the same words again straight after this caption, when there is room.
Add line	Adds an empty caption at the playhead.
Edit text	Opens this caption in the Lines tab.
Delete	Removes the caption.

With nothing selected, a tool works on the caption under the playhead. Undo and Redo cover every edit. Caption timing moves the blocks with the words, so a block always sits where its words show.

On a computer, the Left and Right arrows move one frame, Shift with an arrow moves one second, and Space plays. S splits, [ and ] are Start here and End here, Delete removes the selected caption, and Esc clears the selection.

Lines tab

Control	What it does
Max words per line	Auto, 2, 3, 4, 5 or 6. It wraps every caption after that many words and never changes the times.
Import SRT and Download SRT	Bring captions from a file, or take yours as a file. An imported file replaces the lines, and word timing is estimated from the line times.
Caption text	Write the whole line your own way. Words you keep stay on their time. New words share the time of the words they replaced.
Split here	Cuts the line where the cursor is. With the cursor at the very start or end, the line splits in the middle.
Line break	Starts a new row inside one caption. Press it again at the same place to remove it.
Join next	Makes this line and the next one a single line.
Add line and Delete	Adds an empty line after this one, or removes this one. A line left empty is removed.
Start and End	Type a time such as 00:12,400 or 12.4. The buttons 0.1 second earlier and 0.1 second later move it a little. Now uses the place the video is at. A line stays between the lines around it, so a time that would overlap is adjusted.

Words tab

Control	What it does
Fix words	Tap a word to open Fix this word.
Key words	Tap a word to add or remove its highlight. Your choice stays.
Change everywhere in this video	Fixes the word in every place.
Highlight on or off and Delete word	Marks the word as a key word or not, or removes it.

After saving

Save to phone and Share.
Save to Kriti Cloud keeps a copy in your drive.
Write the post opens Post Writer with your words.
Edit more in Kriti Cut sends the captions over as clips you can still edit, in the style you chose, with the word highlight and position. Pick the same video there. A Pro style needs a plan that includes it.
Caption another video starts again.
Get the words as a file is offered when the video could not be finished.

Captions only, transparent

Pro. A file with only the words on a clear background, so nothing is burned in and you can place them in Premiere, DaVinci or Final Cut.

Control	What it does
ProRes 4444 (.mov)	For desktop editors.
WebM with alpha	For the web and for Kriti Cut, where Edit more in Kriti Cut puts it on its own track.
Frames a second	Matches your video by itself. Change it if your editor needs another rate.
Make the file	Makes it on our server. Your video stays on your device: only the words and the look go.

The size matches your video. A clip can be up to 10 minutes, with 5 files a day. The download link works for an hour.

On Android, install the Kriti App and share a video to Kritiverse from your gallery.

Who can use it

Free plan: included. Pro plan: included.

Some limits depend on your plan. Free is limited to clips of 3 minutes and saves up to 1080p. Pro allows clips up to 30 minutes, saves up to 4K, and holds 20 saved styles, where Free holds 3. Hook likho works 3 times a day on Free and 30 times on Pro. All 14 free styles are open to everyone. The other 10 are Pro styles.

What it costs

Making and saving captions is free within your free minutes. The tool shows how many are left on the first screen, for example how many of the day's minutes. With a verified phone number you get 10 free minutes a day and 60 a month. Without one you get half. Pro allows 60 minutes a day.

Pro adds 26 more styles, including the Designer looks, and transparent export.

When the free minutes run out, the tool says so and offers a button to use credits instead. A 60 second clip costs 5 credits. Nothing is charged until you press it.

Tips

Use clips with clear speech. Hold your phone close when you record.
Press Viral first, then change only what you want.
Add your name and brand once in the Words tab. They stay right on your next videos.
Pick Roman for mixed Hindi and English speech. It reads well and gives the Case options.
Check the coloured words in the Words tab before you save.
If your captions feel a little late or early on one video, use Caption timing in the Text tab. One frame is enough for most clips.
Keep the page open while the video saves, and do not lock the phone.

Common problems

"This device could not finish the video" Try a shorter clip, or press Get the words as a file and use the SRT file. "This browser cannot save videos. Open this page in Chrome." Open the page in Chrome and try again. "Saving may not work inside this app. Open this page in Chrome or Safari first." You are inside another app, such as Instagram. Open the page in Chrome or Safari. "No speech found in this video. Captions need someone talking. Nothing was charged." The video has music or sound but no one talking, so there are no words to write. Your free minutes and any credits you used come back. Try a video where someone speaks. "This video has no sound, so there are no words to write." Pick a video that has sound. "This device cannot read this video file." Try another file, or export the video again from your gallery. "This clip is too long." Free clips can be up to 3 minutes. Cut the clip shorter, or use Pro. "Free minutes used today." Wait for midnight, or use credits. "Free minutes used this month." Use credits or get Pro. "One video at a time. Wait for the last one to finish." Wait, then add the next video. "Busy right now. Try again in a minute. Your minutes are back." Try again in a minute. "The sound did not reach us. Check your internet and try again." Check your connection and add the video again. "This file has no captions we can read. Use an SRT file." Use a file with times such as 00:00:01,000 --> 00:00:02,500. "No hooks left today." You used the day's headline ideas. Write the headline yourself, or try tomorrow. "This is a Pro style." Pick one of the free styles, or get Pro.

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Updated 5 Nov 2026