m3u8 not working

This says m3u8 is supported, but:

[clappr media=”https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8″ poster=”https://i.imgur.com/GRJ3u1j.jpg” watermark=”https://i.imgur.com/If2p9w8.png” mute=”yes”]

Doesn’t work.
This works:

[clappr media=”https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4″ poster=”https://i.imgur.com/GRJ3u1j.jpg” watermark=”https://i.imgur.com/If2p9w8.png” mute=”yes”]

IS there something else I need to do to get m3u8 to work?