QtGstreamer based video player browser plugin using firebreath

Basically this would be a feasibility checking project. I would like to know the feasibility that using the QTGstreamer combined with firebreath browser plugin framework. We need a simple video player that could just play a generic media file, let's say a avi video, with playbin using QTGstreamer binding. The most important is the render part using QTVideoWidget. For the plugin, using the framework, firebreath. For this project, I just need a workable player using QTGstreamer and that could run in the chrome or safari browser. If the project could be done in Mac OS X and xcode environment, that would a a plus.