WorldViz User Forum - How to synchronize play/pause of 2 video streams in stereo

I prepare an application in which both left and right channels in stereo mode must display different avi (or mpeg) video streams.
The video must be started / stopped, of course both channels exactly on the same frame.
But, due to the fact that 2 python commands are needed to play/pause the 2 "cameras", it sometimes happens that one stops or starts before the other, in which case both streams are no more synchronized.

Is there a mean to play / pause 2 video streams exactly on the same frame ?

Here an excerpt of my code :

Code:

..............

        self.leftcam = viz.add(self.leftEyeMovie, viz.TEX_RECT)

        self.rightcam = viz.add(self.rightEyeMovie,viz.TEX_RECT)

        leftquad.texture(self.leftcam)

        rightquad.texture(self.rightcam)

.............



def play(self): 

        if self.playBoth: ## 2 commands cannot always act at the same time

                self.leftcam.play()

                self.rightcam.play()

        elif self.playLeft:

                self.leftcam.play()

        elif self.playRight:

                self.rightcam.play()



def pause(self):

        if self.playBoth:

                self.leftcam.pause()

                self.rightcam.pause()

        elif self.playLeft:

                self.leftcam.pause()

        elif self.playRight:

                self.rightcam.pause()