Pause/Stop video layer in Scene producer

Hi, Is there a way how to pause/stop video producer layer in Scene producer on certain frame?
I have tried it with <marks>

Code: Select all

    <mark at="0" type="start" label="intro" />
    <mark at="40" type="stop" />  

OR with <tasks>

Code: Select all

    <call arg="PAUSE" at="40" to_layer="plate"/>
but video in layer is not paused and playing to the end.

Basicaly I need to have video background as a plate (with complex intro and outro) and text layer over it. With color producer it works fine, but I need it with animation embedded in mov.