title: how to configure AWS Elastic Transcoder
body: <p>I'm trying to use AWS's Elastic Transcoder to implement http live streaming for an iPad app. Suppose that I have an output bucket called "output". I want Elastic Transcoder to decode a video and to put the .ts files for each hls output in their own folder, inside a folder called "camera", inside a folder called "tutorials". The resulting directory structure would look like:</p>
  
  <p>output/tutorials/camera/hls20M/<em>.ts
  output/tutorials/camera/hls15M/</em>.ts
  output/tutorials/camera/hls10M/*.ts
  etc.</p>
  
  <p>The master playlist would go in the /camera folder: output/tutorials/camera/index.m3u8</p>
  
  <p>I'm having trouble figuring out how to set up the "output key prefix" and the "output key" in my job in order to achieve this structure.</p>