cvd.py

# Coursera Video Downloader v1.0

from selenium import webdriver
import requests
import sys
import credentials


# Example course_url - https://www.coursera.org/learn/convolutional-neural-networks/home/week/1
if len(sys.argv) != 2:
    print('Usage: cvd.py <course_url>')
    exit(1)
else:
    url = sys.argv[1]


browser = webdriver.Firefox()
browser.implicitly_wait(60)
browser.get(url)


# Login
username = browser.find_element_by_id("emailInput-input")
password = browser.find_element_by_id("passwordInput-input")
login    = browser.find_element_by_xpath("//button[contains(@class, 'Button_1fxeab1-o_O-primary_cv02ee-o_O-md_28awn8 w-100')]")
username.send_keys(credentials.login["username"]) # credential.py in the same directory containing
password.send_keys(credentials.login["password"]) # login = {"username": "...", "password": "..."}
login.click()


# Prepare a list of all the video hyperlinks
video_urls = []
video_names = []

while True:
    try:
        browser.get(url)
    except:
        break

    # Coursera redirects to week1 url if the week number is wrong
    if browser.current_url != url:
        break

    link_objs = browser.find_elements_by_class_name('rc-ItemLink.nostyle')

    for link in link_objs:
        link_url  = link.get_attribute("href")
        link_name = link_url.split('/')[-1]
        link_type = link_url.split('/')[-3]

        if link_type == "lecture":
            video_urls.append(link_url)
            video_names.append(link_name)

    next_week = str(int(url.split('/')[-1]) + 1)
    url = '/'.join(url.split('/')[:-1] + [next_week])


# Download videos
resolution_selected = False

for i, (video_url, video_name) in enumerate(zip(video_urls, video_names)):
    browser.get(video_url)
    
    if not resolution_selected:
        x = input("Please select video resolution and then press Enter...")
        resolution_selected = True
        browser.get(video_url)

    download_url = browser.find_element_by_id('c-video_html5_api').get_attribute("src")

    response = requests.get(download_url, stream = True)
    handle = open(str(i + 1) + "-" + video_name + ".mp4", "wb")

    for chunk in response.iter_content(chunk_size = 1 * 1024 * 1024):
        if chunk:
            handle.write(chunk)

    handle.close()


browser.close()