don’t natively support interacting with captions at this time, and
writing your own code for uploading or retrieving captions can be
With that in mind, we’re happy to announce the YouTube Captions Uploader
open source project on Google Code, which provides real-world code for
uploading captions to YouTube. The code is written for the Java App
Engine environment, and it uses some nifty new App Engine features like
the Channel API, the Blobstore Service, and Task Queues. And even if you’re not an App Engine developer, we hope that the code that interacts with the YouTube API’s captions service will provide a good starting point for writing your own code.
In addition to open sourcing the code for this project, we’re also running the code itself on a public App Engine instance, http://yt-captions-uploader.appspot.com/. So, even if you’re not a developer, you can still use the application to upload captions for videos in your YouTube account.
Please share your comments or feedback via the project’s issue tracker. We hope that you find it useful both as a standalone web application and as a starting point for writing your own code!
—Jeff Posnick, YouTube API Team