NPTEL Resource Downloader

Python Script to download resources from NPTEL in all formats available

Basic Information

Before we get started, ensure that you have installed Python3 on your machine.
(Sample.py contains a sample code that does all the basic operations)

Modules Required

1. Beautiful Soup
2. Requests

Formats

The available formats for downloading are

• Video
  • MP4
  • FLV
  • 3GP
• Audio
  • MP3
• Transcript
  • PDF

Download Page

The resourses are available to download from the link - nptel.ac.in/courses/nptel_download.php?subjectid=[Course ID]
Eg - https://nptel.ac.in/courses/nptel_download.php?subjectid=106106198

For steps to reach to this website, Click this Link

Code Instruction

1. Include main.py in your file

   from main import nptel as nptel

2. Create a object with url of the download page

   Download = nptel("https://nptel.ac.in/courses/nptel_download.php?subjectid=106106198")

3. ObjectName.getLinks(Format of the content, 'mod'+(Week Number)) returns the download links of all the videos of the specified format and provied week

    Links = Download.getLinks('mp4','mod03')

   For weeks you can use 'mod'+"%02d"%(Week Number) to automatically format the week number.

   For downloading a specific format use the corresponding string given below :

   • MP4 -> 'mp4'
   • FLV -> 'flv'
   • 3GP -> '3gp'
   • MP3 -> 'mp3'
   • PDF -> 'English'

   Note

   • If all videos of the format are to be downloaded just pass the format to .getLinks

   Links = Download.getLinks('mp4')

   • PDF can only be downloaded fully and not week wise.

3. Downloading from the link

   After step 2 the download links are stored on to an array. To download them pass each url to nptel.download(URL,Filename)

   Note

   • PDF
     The List of urls of pdf files contain the complete link to the file

   >>> Links = Download.getLinks('English')
   >>> Links[0]
   'https://nptel.ac.in/courses/pdf_download.php?&subjectId=106106198&lectid=1&lang=English'

   Example

   count = 1
   for url in Links:
       print('\nDownloading PDF ',count)
       nptel.download(url , str(count)+'.'+'pdf')
       count = count + 1

   
   
   • All other files except PDF
     The List of urls of files contain only a partial link to the file

   >>> Links = Stream.getLinks('mp4')
   >>> Links[0]
   '/courses/download_mp4.php?subjectId=106106198&filename=mod01lec01.mp4&subjectName=Introduction to the Course History of Artificial Intelligence'

   Therefore we have to add 'https://nptel.ac.in/' while passing with the url nptel.download()
   
   Example
   Here the file name is obtained from the url by slicing it.

   count = 0
   for url in Links:
     print('\nDownloading ',Links[count].split('=')[3])
     nptel.download('https://nptel.ac.in/'+ url , str(count+1)+"."+Links[count].split('=')[3]+'.'+format)
     count = count + 1