Synchronise - two LED matrix setups

[ggggggr]

Hello, first, thank you for this library and everyone involved in expanding it.

I have two rpi-rgb-led-matrix setups that display a video loop. Is there a way to synchronise them, meaning that they play the same video at exactly the same time?

setup (1) specs:

RPI Rasbian Lite OS Adafruit HAT + RTC Adafruit 64x64 panels x4, 1 chain, U mapped

setup (2) specs:

RPI Rasbian Lite OS Adafruit HAT + RTC Adafruit 64x64 panels x9, 1 chain, U mapped

code in terminal:

sudo ./led-image-viewer /mnt/usb/192.gif --led-cols=64 --led-rows=64 --led-gpio-mapping=adafruit-hat-pwm --led-chain=4 --led-pixel-mapper=U-mapper