In the console of Google Chrome there is a tab called "Network" where everything is being rendered by the browser (images, videos) are listed.
I wonder if it is to get the videos that are being watched and the images loadeded in QWebKit. - "Http Requests"
I don't understand what you are actually asking, but if you want to monitor or log the requests made by a page you can do it e.g. like this:
Re-implement its methods (get(), post() etc.) to monitor when they're firing and then call the base implementation.
Set such "sniffing" object on a webpage with QWebPage::setNetworkAccessManager()