Multiple media playing

Hi
Is playing multiple video streams in a session  synchronously using Media Foundation possible? I am working on c++ and QT5.3.  
Currently i am now able to play 1 video and 2 voice streams synchronously. But when i try it with 2 videos, first video starts to play where second should be and the second video does not appear at all.
My code base is something like this;
http://www.developermemo.com/810277/

Hi
Is playing multiple video streams in a session  synchronously using Media Foundation possible? I am working on c++ and QT5.3.  
Currently i am now able to play 1 video and 2 voice streams synchronously. But when i try it with 2 videos, first video starts to play where second should be and the second video does not appear at all.
My code base is something like this;
http://www.developermemo.com/810277/

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