Does Screenly work on the Raspberry Pi 4?

Hello,
I have installed today screenly OSE on the Pi 4 ( Raspberry Pi OS Lite) by runing bash <(curl -sL https://www.screenly.io/install-ose.sh) and select the Developer/Master branch.
It works for images and websites but not for videos (the video is in the active assets but on the display it is black).
Do you think I have to download Raspbian Buster Lite ?
Thank you