#1 fail in the transition -- null state to play state

[esteban zuniga]

-On video reproduction , tested with m4v , the transition from null state to play state is corrupted, the pipe cannot return to playpipeline
this bug affect directly the stopButton event and the eos slot ,
by the moment when stopButton is pressed , the pipe is detroyed and rebuilded ... in the same way , when the flag of eos is reached , the pipe is detroyed
and rebuilded.
-It causes a stand by period until the pipe is rebuilded
-However for the eos case , the stand by period is longer.