ofxEmscripten oF0.9.0.linux64 run problem

found something wrong around ofxEmscriptenVideoGrabber,

[Error] TypeError: undefined is not an object (evaluating 'VIDEO.grabbers[id].pixelFormat=Pointer_stringify(format)')
	callMain (3DPrimitivesExample.js, line 24)
	doRun (3DPrimitivesExample.js, line 24)
	(anonymous function) (3DPrimitivesExample.js, line 24)

all else is fine, sound, shaders, really nice;)
when live video is working on emscripten? will ofSerial work too?