Help with sound triggers for video

Hello everyone,

I'm fairly new with max/jitter and I'm getting confused with some elements in my patch.
What I essentially want it to do is have a video play when it hears a person speak. I have that working fine, but every time I have it so it takes about 5 to 8 seconds to play the whole video it freezes.
Ideally, I want the video to also slowly play backwards when there's no sound and fade to white. I would like the option of jumping back a forth between frames in a range as well.
Below, I have the basic patch without any additional stuff. Can someone show me how to make this work? Thanks in advance!