Btw, @andaluspc, if you're just getting the HLS playlist URL using --stream-url, then you have to set the Origin and Referer headers manually.

Regular playback via Streamlink works fine.

Hello @bastimeyer . Thank you.
I use streamlink to get the m3u8 URL then I store it in my m3u8 playlist which is being played by my TV application.
Would there be a way to pass Origin and Referer headers in in my m3u8 in EXTINF tag (or any other tag)? I can't find a supportive documentation about if this can be done. I hope I am not at a dead end!

This is not how any of this works. The application which sends the HTTP requests to the HLS playlist/segment URLs has to set those headers. If you're using Streamlink to just resolve the HLS playlist URL without using its own HLS download logic, then you're on your own. Good luck.

Ya.. it seems so. but it is a good challenge so I start providing a solution for such issues :)
Thank you again Sebastian. Appreciate all your support so far.