UE4 - How to play a widget video during a cinematic using the sequencer?


My sequence takes 2 minutes, from minute 1 to 1:20 a widget has to appear and play a video in an small window, while the sequencer is still unning, but, I have no idea how to trigger a widget from the sequencer, and most important, how to play that video in the widget from the sequencer.

Please help!