网易公开课下载脚本 open.163.com

open163_dl.sh

#!/usr/bin/env bash
# author: yuzebin AT gmail
# 20180614

main() {
	mkdir -p $2
	cd $2
    curl $1 | grep -e "http://open.163.com/movie/" | enca -L zh -x UTF-8 | sed -e "s/\<a href=\"//g" -e "s/\>//g" -e "s/<\/a//g" | grep -v class> $2.lst
    
	num=0
    for i in `cat $2.lst`; do 
        let "num = $num + 1";
        curl -A "Mozilla/5.0 (iPad; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1" `echo $i | awk -F"\"" '{print $1}'` | grep -ohE "https?://[a-zA-Z0-9\.\/_&=@$?~#-]*" | grep m3u8 | xargs -I{} ffmpeg -i {} -bsf:a aac_adtstoasc -vcodec copy -c copy -crf 50 $2_${num}_`echo $i | awk -F"\"" '{print $2}'`.mp4; 
    done
	cd ..
}

if [[ $# -ne 2 ]]; then
	echo "Usage:   $0 course_rul course_name"
	echo "Example: $0 http://open.163.com/special/opencourse/bianchengdaolun.html 编程导论"
else
	main $1 $2
fi