A server includes a real-time media application to provide real-time communications (RTC), and a processor to redirect a portion of the real-time media application based on redirection code injected into the real-time media application, with the injected redirection code defining at least one placeholder to indicate positioning geometry of at least one video stream within an RTC window. The processor determines the positioning geometry of the at least one placeholder within the injected redirection code for a client device to overlay the at least one video stream over the at least one placeholder within a displayed RTC window based on the positioning geometry.