Adobe Captivate appears to stop responding for a few moments while publishing a project containing a large size full motion recording. When a large full motion recording is captured in an Adobe Captivate project, the preview and publish operations take a long time.
If you frequently want to preview the project that contains a large full motion recording, set the value of the Compress SWF File option to Off (disabled) in the Preferences tab of the Project Preferences dialog box. This will reduce the time taken to preview the output. After previewing the output, you can change the value of the Compress SWF File option to On (enabled), and then publish your project.