echo $folder
step1(){
  mkdir $folder
  echo url="$prefix/$folder/hls/$m3u8?_lsu_sa_=$gda"
  curl -o $folder/$m3u8 "$prefix/$folder/hls/$m3u8?_lsu_sa_=$gda"
}

step2(){
  cd $folder	 
    tss=`cat *.m3u8 | grep ts`
    for ts in $tss;
    do
      curl -o $ts "$prefix/$folder/hls/$ts?_lsu_sa_=$gda"
    done
  cd -
}

step3(){
  ffmpeg -i $m3u8 out.mp4
}

step1
step2
#step3