COURSE_ID = The course id you want to downloaded for ex :
// You want to download ***CS50's Understanding Technology*** course
// Course URL : https://www.edx.org/course/cs50s-understanding-technology
// So the course id is : ***cs50s-understanding-technology****
USERNAME = You account user name.
COOKIE = Your login cookies from edx
OPTIONS = Is an object, You can use it by this way :
dedx(COURSE_ID, USERNAME, COOKIE, {
limit: 0, // to limit videos number for ex: to get only 10 video from this course || by default 0;
skipVideo: 0, // to skip any video you want just pass the index ot this video for ex: pass video number 7 & will skip it || by default 0;
startVideo: 0, // download will start from this video for ex: if you pass 5 that's mean will skip the first 4 videos || by default 0;
endVideo: 0, // for ex: if you pass 10 and the course has more then 10 videos will download just the first 10 videos and ignore other from 11-20 || by default 0;
videoPath: "/videos", // the path to save the video || make sure this folad is found in the main file
})