Auto-caption English videos

Easily add captions to your English videos

Sonix automatically adds captions to your English videos in less than 5 minutes. We will extract the speech from your video and help you create English captions. Sonix is the most accurate automated transcription and translation service.

Auto-caption your English videos now
Free trial with 30 free minutes

Thousands of customers auto-caption their English videos with Sonix 💖

  • Google uses Sonix's accurate, automated transcription to auto-caption their English videos
  • Microsoft uses Sonix's accurate, automated transcription to auto-caption their English videos
  • NBC Universal uses Sonix's accurate, automated transcription to auto-caption their English videos
  • ESPN uses Sonix's accurate, automated transcription to auto-caption their English videos
  • Stanford University uses Sonix's accurate, automated transcription to auto-caption their English videos
  • Yale University uses Sonix's accurate, automated transcription to auto-caption their English videos
  • ABC News uses Sonix's accurate, automated transcription to auto-caption their English videos
  • Quartz uses Sonix's accurate, automated transcription to auto-caption their English videos
  • CNBC uses Sonix's accurate, automated transcription to auto-caption their English videos
  • CIBC uses Sonix's accurate, automated transcription to auto-caption their English videos
  • Clemson University uses Sonix's accurate, automated transcription to auto-caption their English videos

How do I auto-caption my English videos? 😖

Sonix can easily help you auto-caption your English videos

Just follow these six easy steps to quickly create captions from your English video:

  • Step 1

    Log in to your Sonix account

    Create a free Sonix trial account—includes 30 minutes of free auto-captioning for English videos.

  • Step 2

    Upload your English video

    In Sonix, click “Upload” and choose the English video file from your computer that you want auto-captioned.

  • Step 3

    Click transcribe

    Please make sure that you select English as the language spoken before clicking the “Transcribe” button.

  • Step 4

    Split your auto-captions

    You’ll receive a English transcript in less than 5 minutes. From the Subtitles menu, select “Split subtitles” Sonix will split the subtitles by line or by character count automatically for you.

  • Step 5

    Polish English captions

    Names and other proper nouns might be misspelt by our algorithms, please spend a few minutes making these minor corrections and adjusting the timestamps.

  • Step 6

    Export English captions

    Click export and choose the format that you'd like your subtitles either English Subrip subtitle file (.srt) or English WebVTT file (.vtt). Or, from the Subtitle menu, you can choose the ability to burn-in the English captions into your video.

    Or, from the Subtitle menu, you can choose the ability to burn-in the English captions into your video.

All done! You’ve auto-captioned your English videos in less than ten minutes.

How long will it take to auto-caption my English videos?

Sonix uses the most cutting-edge transcription algorithms to quickly caption your English videos. Our automated transcription servers can auto-caption a one hour English video in under 10 minutes. You'll be able to edit and fine-tune your captions using our powerful subtitle editor.

Do you export in multiple caption file formats?

Yes we do! After you are done auto-captioning your English videos, you can easily export them in English Subrip subtitle file (.srt) or English WebVTT file (.vtt).

How to export SRT files from your English video files

How to export VTT files from your English video files

What English video files does Sonix support?

Sonix accepts most video file formats including the popular *.webm and *.mp4 formats. Here's how Sonix can help you convert these file types into subtitles:

How to create subtitles from *.webm files

How to create captions from *.mp4 files

Best way to auto-caption your English videos 🚀

Sonix automatically transcribes and translates your audio and video files in over 37 languages. Easily search, edit, and share your media files. Sonix uses the best automated transcription models to help you auto-caption your English video files. It's fast, easy, and accurate. Fast, accurate, and affordable. Millions of users from all over the world.

Auto-caption your English videos now

Includes 30 minutes of free transcription

Let our support team help you with all of your automated transcription questions. Pictured: Christine Lee

Transcribe and translate confidently knowing you’re backed by our award-winning team who is ready to answer your questions. Get immediate help by visiting our Help Center, resources, tutorials, and Introduction to Sonix videos.

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