Hi Martin, thank you for your response.
No, I’m not sure to have all infos and now I’m almost sure this is not related with FV Player. After a lot of googling, I have got the name of the streamed file which is not mp4 but m3u8. If I put the path to this file in video field and I disable HLS.js, I can see the video streaming correclty in desktop but not in smartphone. If I enable HLS.js I get Cross-Origin issue and the video doesn’t show up nor in desktop nor in smartphone. And whatever I do to add Allow-Cross-Origin headers, it just doesn’t work.
I have looked at Network panel in DevTools and I saw the original website (I’m preparing a different design to show to the client) uses a request like http://xx.xxx.xx.xxx:8000/; but if I use this I get as response that Winamp is required. Really confusing to me…