vSync's REST API allows you to easily automate the workflow of caption creation.

Via the API our users can automatically:

  • add media and transcripts
  • retrieve native language captions in several different formats
  • retrieve subtitles in several different formats

API is available to all active vSync customers. Several of our customers have been successfully using the API over the last few years. Contact us for more information about the API.

Why Captions and Subtitles

Search Engine Optimization
Addressing international audience
Search witin the video


Stanford University's eCorner website captions over 2000 videos using vSync service.


The Cisco Entrepreneur Institute captions close to 1000 videos and creates over 2500 subtitles in varying languages using vSync service.

Contact Us

Keen Research / vSync
125 Stanford Ave
Mill Valley, CA 94941