The following is a Zencoder guest blog post on the Google WebM blog. Zencoder is a cloud service for video encoding. Through a simple API, we provide high-performance, high-quality video encoding for web and mobile, at any scale, small or large. Our customers range from broadcast media to online video publishers to UGC websites. At Zencoder, we encourage our content publishers to support HTML5 video. Though HTML5 video is relatively new, it's now playable by more than 50% of Internet users, and that number is growing quickly. We are committed to open technology and believe that WebM is the way forward for open video. Our open-source HTML 5 video player, VideoJS, makes it easy to play WebM content in web browsers and mobile devices--but WebM encoding is needed too. That's why, starting today, Zencoder is offering promotional pricing on WebM encoding. Until June 5th, 2011, all WebM encoding will be billed at 50% off of our published prices ($0.02-$0.05 per minute of video). We also want to make it easy for publishers to convert large content collections to WebM, so we're also launching a new batch video encoder. This service makes it easy to transcode entire content libraries to WebM, but also to HD or for HTTP adaptive streaming. In the coming year, more publishers will want to offer WebM support, and we hope Zencoder can help them make a seamless entry into the world of open video. Sign up for free to try it out.