Captions & Subtitles

Image of video with captions

Start with a clear recording and a transcript and CaptionSync will produce closed captions with precise timecodes ready to integrate into any media you use.

The CaptionSync Solution… Simple, Fast and Cost-Effective

  • Just log on and submit your media file to CaptionSync.
  • Receive captions in minutes if you provide a transcript.
  • No transcript? Let our human transcribers generate one for you in 3 business days or less (or if you’re in a hurry use our 1 business day Rush service).
  • The most cost-effective solution in the industry.

Input Formats We Accept

  • Upload content in many different Video & Audio Formats
  • Lecture Capture: Many systems can be configured to automatically upload content to CaptionSync
  • Bulk Uploads?  AST provides our free and easy AST-Link application for Windows or Mac

Output Formats You Receive

Learn more about closed caption styles and captioning for specific types of media to the right.


  • Web-based pay per use service.
  • No software to buy or install.
  • Choose just the services needed (you can provide your own verbatim text transcript to get captions, or you can have us do the transcription for you).
  • Pay online via credit card or Visa/MasterCard branded purchase cards.

Get Pricing button

  • The process that AST has developed for creating closed caption video content for web and broadcast has been a terrific asset to our institution.  AST's superb customer support and great educational pricing makes it inexcusable for us not to provide our educational video content with captioning.
    Philip R.
    North Carolina State College of Veterinary Medicine

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