gnonlin gnlurisource combine videos

[troywang]

why is gnonlin-1.1.90's gnlfilesource missing? And thus how to use gnonlin to
combine some mp4 files? I have to use gnlurisource ?

I want to combine some mp4 files into a mp4 file. My python gstreamer code
as follow:


GObject.threads_init()
Gst.init(None)

class Main:
        def __init__(self):
                # creating the pipeline
                self.pipeline = Gst.Pipeline()
                self.bus = self.pipeline.get_bus()
                self.bus.add_signal_watch()
                self.bus.connect('message::eos',self.on_eos)
                # creating a gnlcomposition
                self.comp = Gst.ElementFactory.make("gnlcomposition",
"mycomposition")
                self.pipeline.add(self.comp)
                self.comp.connect("pad-added", self.OnPad)
             

                # create a filesink
                self.filesink = Gst.ElementFactory.make('filesink',
'filesink')
                self.filesink.set_property('location','test.mp4')
                self.pipeline.add(self.filesink)


                # create a gnlurisource
                self.video1 = Gst.ElementFactory.make("gnlurisource", "aaa")
                self.comp.add(self.video1)

                # set the gnlurisource properties
                self.video1.set_property("uri", "aaa.mp4")
                self.video1.set_property("start", 0 * Gst.SECOND*0)
                self.video1.set_property("duration", 5 * Gst.SECOND)

                # create a gnlurisource
                self.video2 = Gst.ElementFactory.make("gnlurisource", "bbb")
                self.comp.add(self.video2)

                # set the gnlurisource properties
                self.video2.set_property("uri", "bbb.mp4")
                self.video2.set_property("start", 0 * Gst.SECOND*1)
                self.video2.set_property("duration", 5 * Gst.SECOND)
                self.pipeline.set_state(Gst.State.PLAYING)

        def on_eos(self):
                self.pipeline.set_state(Gst.State.NULL)
        def OnPad(self, comp, pad):
                print "pad added!"
                convpad = self.filesink.get_static_pad("sink")
                pad.link(convpad)
start=Main()
loop = GObject.MainLoop()
loop.run()

 but it works unnormal,and the test.mp4 is 0.
I install gstreamer-1.2.0 and glib-2.34.3.Who can help me?



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