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Up to 20 clips at once

How to batch add captions to multiple videos

Shot a week of content in one sitting? Queue up to 20 clips, pick a style once, and Just Captions transcribes and burns in subtitles for the whole set — on your iPhone, in the background, with on-device transcription available.

Add captions free Try it in your browser
Up to 20 in a queue Processed on device No card to start

The short version: open Just Captions, add up to 20 videos from your camera roll, and pick one caption preset for the batch. The app transcribes and times subtitles for every clip on your device, then you export each one as a burned-in MP4. One style decision, twenty captioned videos — and your video stays local with on-device recognition.

Step by step

Caption a whole batch in one pass

  1. Select your clipsOpen Just Captions and add up to 20 videos from your camera roll at once. Portrait, square and landscape can all sit in the same queue.
  2. Pick one styleChoose a single preset — White box, Yellow box, Gray box or Yellow outline — and it's applied across the batch so every clip comes out looking consistent.
  3. Let Batch Mode runThe app transcribes each clip on your device and times clean subtitles to every word, working through the queue in the background while you do something else.
  4. Review & exportOpen any clip to fix a name or tweak a line, then export each video as an MP4 with the captions burned in — ready to post anywhere.
Captioning for more than one market? After a batch finishes, use AI Auto Translate to spin a finished clip into another language, or see how to translate one video into multiple languages.
Batch Mode at a glance

What Batch Mode handles for you

One queue, one style decision, and the work runs unattended on your device. Here's exactly what's covered.

CapabilityIn Just Captions Batch Mode
Clips per queueUp to 20 videos at once
StylingPick one preset; applied across the whole batch
Aspect ratiosPortrait, square and landscape can be mixed in one queue
Where it runsOn your device, in the background — on-device transcription available
Per-clip editsOpen any video afterwards to fix a word or adjust placement
LanguagesTranscribes whatever's spoken across 50+ languages
OutputOne burned-in MP4 per clip, ready to upload

Best for posting daily, repurposing one shoot into a week of clips, or captioning a backlog without sitting through each one.

Batch Mode

  • One style decision covers the whole set
  • Runs in the background while you step away
  • Consistent look across every clip in a series
  • Still lets you fine-tune any single video

Captioning one at a time

  • Repeat the same taps for every clip
  • Easy to drift out of a consistent style
  • You have to babysit each export
  • Slow when you've shot a week in one go
FAQ

Batch captioning, answered

How many videos can I caption at once?
Batch Mode handles up to 20 clips in a single queue. Add them all, pick a style once, and Just Captions works through the set on your device while you do something else.
Does every video have to use the same style?
You apply one preset to the batch so the set stays consistent, but you can still open any individual clip afterwards to adjust the style, fix a word or change placement before exporting.
Can I mix portrait, square and landscape in one batch?
Yes. Different aspect ratios can sit in the same queue — captions are sized and placed appropriately for each clip's frame.
Is anything uploaded when I batch caption?
No. Transcription and rendering run entirely on your device, so none of your footage leaves your phone — even with 20 clips in the queue.
Keep going

More with Just Captions

Translate to multiple languagesTurn one video into localized cuts for every market.Read →
Fix transcriptions with AIClean up names, punctuation and filler in a tap.Read →
Free online subtitle toolCaption a clip in your browser, no install.Try it →

Caption your whole batch. That's it.

Three videos a day free, no card, on-device transcription available. Queue your clips and watch the captions write themselves.

Download on theApp Store

Just Captions 2.6: three videos a day free, with a watermark. Choose from 15 styles: seven static styles are free; animated styles require Pro, with one free single-video Emoji export. Pro removes the watermark. On-device transcription is available after the model download. Optional cloud recognition sends audio for processing; AI editing and translation send caption text. These online features need a connection.