{"id":1542,"date":"2014-04-28T22:19:19","date_gmt":"2014-04-28T16:49:19","guid":{"rendered":"http:\/\/judepereira.com\/blog\/?p=1542"},"modified":"2014-04-28T22:25:35","modified_gmt":"2014-04-28T16:55:35","slug":"download-your-coursera-lectures-using-js-bash-and-wget","status":"publish","type":"post","link":"https:\/\/judepereira.com\/blog\/download-your-coursera-lectures-using-js-bash-and-wget\/","title":{"rendered":"Download your Coursera lectures using JS, bash and wget"},"content":{"rendered":"

So, in light of recent events, I was unable to follow up on my Coursera Algorithms course.<\/p>\n

Trying to find a way to download all the lectures at once, I couldn’t find a way that worked for me – I found two, but they simply didn’t work. With the help of some JavaScript that I got from one of these sources, I cooked up the following steps to easily download all the lectures at once:<\/p>\n

Step 1: Extract the lecture names, and their IDs from the Coursera page<\/strong>
\nNavigate to your lecture page(for me, it was https:\/\/class.coursera.org\/algs4partII-003\/lecture).
\nExecute the following JavaScript in the Console(in Chrome, use the Inspect Element option):
\n[code lang=”javascript”]
\nfunction findLectures () {
\n var link_elems = document.querySelectorAll(‘.lecture-link’);
\n var lectures = “”;
\n Array.prototype.slice.call(link_elems).forEach(function (elem, i) {
\n var lecture = i + “|” + elem.getAttribute(‘data-lecture-id’) + “|” + elem.innerText.trim();
\n lectures += lecture + “\\n”;
\n });
\n return lectures;
\n}
\n[\/code]
\nThen call the method findLectures(). This will print each lecture in the following format: Lecture position in page|Lecture ID|Lecture name.
\nExample output:<\/p>\n

\n0|43|Course Introduction (9:22)
\n1|1|Introduction to Graphs (9:32)
\n2|2|Graph API (14:47)
\n…\n<\/p><\/blockquote>\n

Save this to a file named lectures.txt(exclude any quotes that get pasted)<\/p>\n

Step 2: Export Coursera’s cookies<\/strong>
\nUse the Chrome plugin cookie.txt export<\/a> to export all the cookies that Coursera has saved. Save the result to a file named cookies.txt<\/p>\n

Step 3: Download them!<\/strong>
\nRun the following in the terminal:
\n[code lang=”javascript”]
\nexport COUNT=1; while read line; do lecture_name=`echo $line | awk -F ‘|’ {‘print $3’}` lecture_id=`echo $line | awk -F ‘|’ {‘print $2’}`; echo “Downloading lecture $COUNT; ID=$lecture_id; Name=$lecture_name…”; ((COUNT++)); wget –load-cookies cookies.txt https:\/\/class.coursera.org\/algs4partII-003\/lecture\/download.mp4?lecture_id=$lecture_id -O “$COUNT – $lecture_name”; done < lectures.txt\n[\/code]\nMake sure you replace the link to where your lectures are listed<\/strong>. The above link has “https:\/\/class.coursera.org\/algs4partII-003\/lecture\/” in it. <\/p>\n

This will download all the lectures in the current working directory. It does not maintain any relationship with the week that the lecture was released in. It downloads them in the order that they are listed on the Coursera lecture page.<\/p>\n","protected":false},"excerpt":{"rendered":"

So, in light of recent events, I was unable to follow up on my Coursera Algorithms course. Trying to find a way to download all the lectures at once, I couldn’t find a way that worked for me – I found two, but they simply didn’t work. With the help of some JavaScript that I […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[52,10],"tags":[484,485,487,486],"class_list":["post-1542","post","type-post","status-publish","format-standard","hentry","category-code","category-linux","tag-coursera","tag-download","tag-download-lectures","tag-lectures"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pqtyx-oS","jetpack-related-posts":[{"id":694,"url":"https:\/\/judepereira.com\/blog\/visual-basic-6-revisited-linux-wine\/","url_meta":{"origin":1542,"position":0},"title":"visual basic 6 revisited – linux – wine","author":"Jude Pereira","date":"August 5, 2010","format":false,"excerpt":"Earlier this year, I had written an article on running Visual Basic 6 on linux under wine, this is an update for it, the prior one is deprecated Getting Visual Basic 6 to work on linux is pretty easy, not much trouble, all the basic things work, as of what\u2026","rel":"","context":"In "another snippet | code"","block_context":{"text":"another snippet | code","link":"https:\/\/judepereira.com\/blog\/category\/code\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":903,"url":"https:\/\/judepereira.com\/blog\/usrlocalbinwaitpid\/","url_meta":{"origin":1542,"position":1},"title":"\/usr\/local\/bin\/waitpid","author":"Jude Pereira","date":"April 26, 2011","format":false,"excerpt":"A quick script to wait for a certain pid, then once that quits, execute a command. 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Note: This setup does not require you to download Apple Configurator and switch your iPhone into Supervised mode (we will create a configuration\u2026","rel":"","context":"In "gnu linux"","block_context":{"text":"gnu linux","link":"https:\/\/judepereira.com\/blog\/category\/linux\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/judepereira.com\/blog\/wp-content\/uploads\/Screen-Shot-2018-05-10-at-20.34.32-1024x134.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/judepereira.com\/blog\/wp-content\/uploads\/Screen-Shot-2018-05-10-at-20.34.32-1024x134.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/judepereira.com\/blog\/wp-content\/uploads\/Screen-Shot-2018-05-10-at-20.34.32-1024x134.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":1675,"url":"https:\/\/judepereira.com\/blog\/sending-notifications-via-apples-new-http2-api-using-jetty-9-3-6\/","url_meta":{"origin":1542,"position":4},"title":"Sending notifications via Apple’s new HTTP\/2 API (using Jetty 9.3.6)","author":"Jude Pereira","date":"January 9, 2016","format":false,"excerpt":"HTTP\/2 is still very much new to Java, and as such, there are just two libraries who support it - Jetty (from 9.3), and Netty (in alpha). 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