Subanana

Automatic Caption Generator

Upload a video or paste a public link and Subanana generates timed subtitles automatically, with speakers identified and punctuation restored. Export as SRT, VTT, TXT, DOCX, XLSX, Markdown — or burn the subtitles into the video — and translate the same file into any of 95+ languages. Accuracy averages 98%, and you can preview the first 15 minutes of any file free.

Generate captions automatically for your videos, ensuring viewer engagement and accessibility. 98% accuracy.

  • Google
  • Deloitte
  • dentsu
  • Manulife
  • NAVER
  • Philips
  • Amazon
  • Shopify
  • Figma
  • Coinbase
  • WPP
  • Semrush
  • Google
  • Deloitte
  • dentsu
  • Manulife
  • NAVER
  • Philips
  • Amazon
  • Shopify
  • Figma
  • Coinbase
  • WPP
  • Semrush

How a video gets its subtitles

Product walkthrough

MP4 · 12:40 · uploaded

Upload a video or paste a public linkCues timed and sized for comfortable reading

Subtitle track

00:12

Here's the dashboard you'll see after signing in.

00:47

Every change you make is saved as you go.

Subtitle files

SRT · VTT

Bilingual subtitles

Two languages in one file

Burned-in video

Rendered up to 4K

Text formats

TXT · DOCX · XLSX · Markdown

Translations

95+ languages

Why the subtitles come out ready to publish

The distance between a raw transcript and a publishable caption file is where the hours go. This is what closes it.

Cues built for reading speed

  • Reading-speed flagsCues too dense to read comfortably are flagged in the editor before anyone else sees them.
  • Style presetsSave your subtitle style once and apply it to every video in the workspace.
  • Live previewFont, size, colour and position, adjusted on the actual frame while you watch.
  • Sizing that adaptsLong lines stay on screen instead of running past the edge of the frame.

Every file the platform asks for

  • SRT and VTTThe two standard caption formats, per language, ready to upload.
  • Bilingual in one passSource and translation in a single subtitle file — or burned in together.
  • Burned-in video up to 4KA finished subtitled video, rendered with exactly the style you previewed.
  • One ZIPEvery format in a single download when you need them all at once.

Who ships subtitles with this

Four teams, one deadline shape: the video is done and the captions are the last thing standing.

YouTube & Shorts

Creators

Captions raise watch time and open videos to viewers watching on mute — without an evening of typing.

E-learning

Course teams

Every lesson gets accurate, consistently styled captions, and translations for cohorts in other languages.

News & media

Publishers

Clips go out subtitled on schedule, with a house style saved once and applied to every edit.

Campaigns

Brand & social teams

Campaign cuts ship in every market's language, styled to brand and rendered ready to post.

How to add subtitles to a video

Upload the file or paste a link, check the result in the editor, then export the format your platform expects. No software to install.

  1. Upload the video or paste a linkCommon audio and video files work directly, up to 8h and 30GB per file on all plans. Public YouTube, Instagram and Facebook links can be pasted instead of downloading first.
  2. Choose the language and any translationsPick the spoken language, then add target languages if you publish in more than one. Translation currently costs no extra minutes.
  3. Let the AI cut the subtitlesSpeakers are identified automatically and punctuation and line breaks are restored, so the cues read as sentences rather than as a stream of words.
  4. Review and exportFix anything in the editor, then export SRT, VTT, TXT, DOCX, XLSX, Markdown — or a bilingual SRT, or the video with the subtitles burned in.

What you get with every subtitle job

The specifics, so you know before you upload whether it fits your workflow.

Input
Audio and video files, or a public YouTube / Instagram / Facebook link
Languages
95+, with translation into any of them
Speaker labels
Automatic, with the speaker count set manually or detected
Export formats
SRT, VTT, TXT, DOCX, XLSX, Markdown, bilingual SRT, or burned-in video
File limits
8h and 30GB per file on all plans
Free tier
Preview the first 15 minutes of each file, 3 files a month

Automatic Caption Generator Software powered by AI in 2026

Automatic Caption Generator: The Ultimate Tool for Content Creators

In today's fast-paced digital world, creating engaging and accessible content is more important than ever. As a content creator, you want to ensure that your videos are reaching the widest possible audience, including those who are deaf or hard of hearing. This is where an automatic caption generator can be a game-changer for your content strategy.

What is an Automatic Caption Generator?

An automatic caption generator is a software tool that uses artificial intelligence and machine learning algorithms to transcribe spoken words in a video or audio file into text. This text is then displayed as captions on the screen, making the content accessible to viewers who may have difficulty hearing the audio.

Why Use an Automatic Caption Generator?

1. Accessibility: By providing captions on your videos, you are making your content more inclusive and accessible to a wider audience. This can help you reach more viewers and increase engagement with your content.

2. SEO Benefits: Adding captions to your videos can also have a positive impact on your search engine optimization (SEO) efforts. Search engines like Google can crawl and index the text in your captions, which can improve the visibility of your content in search results.

3. Improved User Experience: Captioned videos are easier to follow and understand, especially in noisy or distracting environments. By using an automatic caption generator, you can enhance the overall user experience of your content.

4. Time-Saving: Manually transcribing audio or video content can be a time-consuming and tedious task. An automatic caption generator can save you time and effort by quickly generating accurate captions for your videos.

How to Choose the Right Automatic Caption Generator

When selecting an automatic caption generator for your content creation needs, there are a few key factors to consider:

1. Accuracy: Look for a tool that provides high-quality and accurate transcriptions to ensure that your captions are error-free.

2. Customization Options: Some caption generators offer customization options, such as the ability to adjust font size, color, and positioning of captions on the screen.

3. Multilingual Support: If you create content in multiple languages, choose a caption generator that supports a wide range of languages for maximum accessibility.

4. Integration: Consider whether the caption generator can easily integrate with your existing video editing or publishing platforms for seamless workflow.

In conclusion, an automatic caption generator is a valuable tool for content creators looking to enhance the accessibility and reach of their videos. By providing accurate and timely captions, you can improve the user experience, boost SEO efforts, and save time in the content creation process. Choose the right caption generator for your needs and start making your content more inclusive today.

Questions we getFrequently asked questions

Accuracy averages 98%. Recording clarity, background noise and specialist vocabulary all affect the result — adding a glossary of names and terms measurably improves how proper nouns are handled.

SRT, VTT, TXT, DOCX, XLSX, Markdown, or all of them at once as a ZIP. You can also export a bilingual SRT with the original and translated lines together, or a video with the subtitles burned in.

Yes. Paste the public video link and Subanana fetches it directly — regular uploads and Shorts both work. Private, members-only and region-locked videos need a file upload instead.

You can preview the first 15 minutes of each file free, 3 files a month, with no card required. Exporting subtitle files is a paid feature.

Yes. Speakers are separated automatically, and you can either set the number of speakers yourself or let it be detected.

No. Recordings, transcripts and subtitles are never used to train models, in any processing mode. Files are stored encrypted and every access is logged.

Updated 2026-04-10