Debugging a Chromecast Application
Use the function printDebugMessage to dynamically debug the Chrome developer tools console output about sender commands and Ooyala Player events. Media status objects can be monitored on the receiver debug console with the MediaManager.customizedStatusCallback function. You can customize which events are reported to the logs and select to see errors from the Chromecast and/or Ooyala namespace.
Open a browser window and point it to the IP address of the Chromecast unit (port 9222). For more information on how to debug from this point, go to Google’s Chromecast Developer Guide topic on debugging and Google's topic on handling Cast Media error messages.