HLS playback URL of a video not playing in video player.

I've got an HLS playback URL of a video on Azure, but I can not integrate the link into the video player. The link works on the following player: 'https://docs.flowplayer.com/tools/stream-tester', but not in FlutterFlow. Any idea what I need to do differently?

The goal is to create a video feed that looks like the below standing app. Any best practices on how to achieve this without downloading each video in the app but just streaming it?

Thanks a lot!

Christophe