We have a pretty wide range of customers. It's mostly websites today - niche video sharing sites (http://schooltube.com), blogging engines (http://posterous.com), content sites (http://www.giantbomb.com/), online video publishing tools, and other sites that accept video uploads. We also have mobile and enterprise customers.

You'd be amazed how many websites out there need something like this - tens and tens of thousands. Every website with an "upload" button that accepts video or audio files needs transcoding, plus many others. And since a site like Zencoder makes it possible to do complex things with video in 2-3 hours instead of 2-3 months, we open the door to a whole new class of video functionality.