1. A computer-implemented method for implementing a dynamic media content instantiation framework, comprising: executing on a computer system an application in an application runtime environment, wherein the application comprises code for requesting a media platform component from a media platform runtime environment; executing on the computer system an application-side framework module within the application runtime environment, wherein the application-side framework module comprises code for receiving the request and passing the request via an interface to a media platform-side framework module; executing on the computer system the media platform-side framework module within the media platform runtime environment wherein the media platform-side framework module comprises code for: in response to the request, instantiating the media platform component by obtaining a description of the media platform component from a component library and dynamically generating the media platform component from the description; obtaining from a media platform runtime instance a media platform stage and attaching the media platform component to the stage, wherein the stage specifies a region in which media platform content is to be rendered on a display; and returning to the application-side framework module, via the interface, a reference to the stage; and wherein the application-side framework module further comprises code for displaying the stage and the attached media platform component on the display.