Omxplayer-sync

Two disk images to sync videos across different raspberries based on this code : https://github.com/turingmachine/omxplayer-sync/blob/master/omxplayer-sync

master image :
slave image :

A cronjob starts a script to run omxplayersync on boot.

@reboot sudo /home/pi/script.sh &

script on master

#!/bin/bash
sleep 20
sudo /usr/bin/omxplayer-sync -mu /home/pi/synctest.mp4

script on slave

#!/bin/bash
sleep 20
sudo /usr/bin/omxplayer-sync -lu /home/pi/synctest.mp4

The movie should be place in /boot/videofile/ and named sync.mp4 on both master and slave.