Can u crack this HLS a Challenge to download my online class Can You?

  aes, ffmpeg, http-live-streaming, streamlink, windows

Can anybody Download this file as video i have tried ffmpeg streamlink with csrf cookie and all etc its say unable to open the key this is the link

720p : link

if anybody can help then it will be so helpful i wanna know is stack overflow can do it or not please urgent come on show how brilliant you are

Source: Windows Questions