+ contentSession.getHttpServletRequest().getContextPath()
+ "/img/masks/mario-wings.png";
MediaPipeline mp = contentSession.getMediaPipelineFactory().create();
contentSession.releaseOnTerminate(mp);
filter = mp.newFaceOverlayFilter().build();
filter.setOverlayedImage(imageUrl, -0.35F, -1.2F, 1.6F, 1.6F);
WebRtcEndpoint webRtcEndpoint = mp.newWebRtcEndpoint().build();
webRtcEndpoint.connect(filter);
filter.connect(webRtcEndpoint);
contentSession.start(webRtcEndpoint);