YouTube Engineering and Developers Blog: January 2011

Engineering and Developers Blog

What's happening with engineering and developers at YouTube

YouTube Captions Uploader Web App

Thursday, January 27, 2011

Captions can greatly enhance the experience of viewing a YouTube video, and the YouTube API has offered developers ways to upload and retrieve caption data in authorized requests for a while now. However, the various YouTube API client libraries don’t natively support interacting with captions at this time, and writing your own code for uploading or retrieving captions can be challenging.

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!

Cheers,
—Jeff Posnick, YouTube API Team

Google

Labels: accessibility , app engine , captions , java

Introducing JavaScript Player API for iframe embeds

Thursday, January 20, 2011

Update (July 2012): The onYouTubePlayerAPIReady callback has been superseded by onYouTubeIframeAPIReady and the URL for loading the IFrame Player API code has changed to http(s)://www.youtube.com/iframe_api. The API is now fully supported.
<iframe>announced<iframe>share videosan initial beta version of<iframe><!DOCTYPE HTML><html><body><div id="player"></div><script> //Load player api asynchronously. var tag = document.createElement('script'); tag.src = "https://www.youtube.com/iframe_api"; var firstScriptTag = document.getElementsByTagName('script')[0]; firstScriptTag.parentNode.insertBefore(tag, firstScriptTag); var done = false; var player; function onYouTubeIframeAPIReady() { player = new YT.Player('player', { height: '390', width: '640', videoId: 'JW5meKfy3fY', events: { 'onReady': onPlayerReady, 'onStateChange': onPlayerStateChange } }); } function onPlayerReady(evt) { evt.target.playVideo(); } function onPlayerStateChange(evt) { if (evt.data == YT.PlayerState.PLAYING && !done) { setTimeout(stopVideo, 6000); done = true; } } function stopVideo() { player.stopVideo(); }</script></body></html>YT.Playerhttp(s)://www.youtube.com/iframe_apidocumentationDeveloper Forum