would like to know too,
i saw someone said
here , there is -cookies option if he build from source.
i want to download a m3u8 with #EXT-X-KEY:METHOD=AES-128,URI="https://xxx/myStream.php?wowzasessionid=123456" inside, so have to pass ffmpeg the cookies to authenticate on the website( i have login acccount )
please pm me too.