It should honestly just be as simple as:
1. Forcing the event displaying the video as "Autorun" (which should halt player movement at a minimum) and
2. Setting the other events moving with another event page that is activated with a switch that should be turned "ON" prior to video displaying. That is, if the scenario is during real time on the map.
If the video is going to be played as a gaming intro, then this method should also work for that scenario.
If the video is going to be played during a battle, then that might a little trickier to deal with.
If you could be more specific on when you plan on using the video, it could help lead to alternative answers if you don't wish to use a plugin.