YouTube & Shorts
Creators
Captions raise watch time and open videos to viewers watching on mute — without an evening of typing.
Add Caption to Video
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. Cantonese is a core language rather than an afterthought, including mixed Cantonese-English within a single sentence. Accuracy averages 98%, and you can preview the first 15 minutes of any file free.
Automatically add captions to your videos, enhancing accessibility and engagement. 98% accuracy.
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.
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.
- 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.
- 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.
- 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.
- 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
Add Caption to Video Software powered by AI in 2026
When it comes to creating engaging and accessible video content, adding captions is essential. Whether you are a content creator, marketer, or business owner, understanding how to add captions to your videos can help you reach a wider audience and improve the overall user experience. In this blog post, we will discuss everything you need to know about adding captions to videos, including the benefits, best practices, and tools available to help you streamline the process.
Benefits of Adding Captions to Videos:
1. Accessibility: Adding captions to your videos makes your content more accessible to individuals who are deaf or hard of hearing. It also benefits viewers who speak a different language or prefer to watch videos with the sound off.
2. Improved SEO: Search engines like Google can't watch or listen to video content, but they can read captions. By adding captions to your videos, you can improve your SEO rankings and reach a larger audience.
3. Increased Engagement: Captions can help keep viewers engaged throughout your video, especially if they are watching in a noisy environment or in a public place where they can't turn the sound on.
4. Better Comprehension: Some viewers may have difficulty understanding the spoken content in your videos due to accents, audio quality, or language barriers. Captions can help improve comprehension and make your message clearer.
Best Practices for Adding Captions to Videos:
1. Use Accurate Transcriptions: Make sure your captions accurately reflect the spoken content in your videos. Avoid using automated transcription tools, as they may produce errors or miss important details.
2. Time the Captions Correctly: Ensure that your captions are synced with the audio and appear on the screen at the right time. This will help viewers follow along with the content and prevent confusion.
3. Make Captions Readable: Use a clear, easy-to-read font for your captions and avoid using distracting colors or backgrounds. Aim for a good contrast between the text and the video to ensure visibility.
4. Include Sound Effects and Speaker Identification: If your video contains sound effects or multiple speakers, be sure to include these details in your captions. This will provide a more immersive experience for viewers.
Tools for Adding Captions to Videos:
1. Rev: Rev is a popular transcription and captioning service that offers accurate and fast turnaround times. You can upload your video files directly to their platform and receive professionally transcribed captions.
2. Kapwing: Kapwing is a free online tool that allows you to add captions to your videos easily. Simply upload your video, type out the captions, and customize the appearance to match your branding.
3. YouTube Studio: If you are uploading your videos to YouTube, you can use the built-in captioning tool in YouTube Studio to add captions manually or auto-generate them. This feature can help improve the accessibility and reach of your videos on the platform.
By following these best practices and using the right tools, you can effectively add captions to your videos and enhance the overall viewing experience for your audience. Whether you are creating educational content, marketing videos, or social media clips, adding captions should be a priority to maximize engagement and accessibility. Start incorporating captions into your video content today and see the positive impact it can have on your audience reach and engagement.
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.
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