Multiple PI's playing video in sync with OMXPlayer

@jvcleave this starts with a better seek. I saw that was in your plans, but no commits on this feature so far. I’m willing to help you implement this :slight_smile: When i start to play with your addon and tried to force a seek operation the result was odd, the player waits for almost a second and then move the playhead to the desired time, but the movie rate increases and the movie never recovers. Do you have any hints on how to fix this?