I have two questions.

Last Sunday I had a great day on a children event. We made a greenscreen studio in a black tent and kids where welcome to fly like Superman or Supergirl.

First Question:
I made four video's, two for Superman and two for Supergirl. When starting the video both video's for boy or girl where started and the greenscreen cam 1 was triggerd after the leader. This worked great. I manually changed the angel (side or front). Worked like a charm. But at the end of the video, I needed to switch, frame accurate, to front cam 2. But the triggercounter could not go higher then (i think) 30.000 ms. I needed 67440ms. So I repeated the trigger for cam 1 two times with 30.000ms and the last with 7440ms for cam 2. This worked. But is very clumsy. So how to make longer triggers?

Second question:
After starting a video with triggers, can I stop the triggers?
I sometime started the wrong video. So we needed to wait until all triggers where fired to start again.

So in short:
1 - How to make long trigger time's
2 - How to stop triggers