How to synchronize play/pause of 2 video streams in stereo

[Gilliard]

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 :

..............
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()

[farshizzo]

Hi,

Are you noticing a synchronization issue with the sample code you supplied? Media files have a jumpto command which can jump playback to specific time in the video. Other than that, the only way to have the videos be perfectly synchronized is to combine them into a single video that displays them side by side.