Watchout only uses Quicktime when exporting a movie, so it would make little sense to install Quicktime on a display computer. If you want to use the export function in Watchout, Quicktime is required on the production computer.  That said, if you want to encode to Hap using a Quicktime-enabled application, you might need to install Quicktime and the Hap codec for Quicktime. Another option would be to encode Hap files using ffmpeg, using the following command line:    ffmpeg -i inputfile.mov