Remove word wrap format and leave no spaces, posted for easyier reading, each --http-header is a new &
livestreamer
"url|User-Agent=
&Accept=
&Accept-Language=
&Accept-Encoding=
&DNT=
&Referer=
&Connection="
best
I had to remove the hlsvariant:// part and just leave the url.
https://rtmpdump.mplayerhq.hu/rtmpdump.1.html