从网站下载所有 mp4 视频

Question

This是我要下载的讲座链接。单击每个链接然后下载是很烦人的。我想从网站下载所有 mp4 文件。如何实现它。我已经搜索了足够长的时间来在这里提问。我已经下载了 Winwget，但我无法弄清楚如何下载具有 .mp4 扩展名的文件。我对任何操作系统 windows 10 或 ubuntu 解决方案都很满意。

Answer 1

对于某些网站，您可以使用youtube-dl python 脚本。

1. 打开 cmd 提示符
2. 在那里输入 pip install youtube-dl

3. 在cmd中编写python脚本如下：

   C:\Users\user_name>youtube-dl 链接

如果是需要登录的网站，比如Udemy，写

 C:\Users\user_name>youtube-dl -u user@gmail.com -p password course_link

Answer 2

如果您可以使用 Python，这里有一个解决方案。它获取视频不同链接的内容并将其存储在“video_X.mp4”下，X在1到42之间：

import requests


for x in xrange(1,43):
    video_url = "http://nptel.ac.in/courses/download_mp4.php?subjectId=111105035&filename=mod01lec" + str(x).zfill(2)  + ".mp4"
    with open('video_' + str(x).zfill(2) + '.mp4', 'wb') as handler:
        handler.write(requests.get(video_url).content)
    pass

Answer 3

我使用以下答案 (https://stackoverflow.com/a/40553400/11786575) 来编写我的 Python 代码：

import urllib.request

### First, get a page source from Chrome inspector (press F12, select, copy and paste from "Elements"), paste the whole text here. The text should include a lot of text and also links to the mp4 video files.

filename = 'C:\\file_location...\\...\\...\\page_source_f12.txt'

### Write everything from the previous text file that includes .mp4 to a list
list_1 = []
with open(filename, "r", encoding='utf-8') as myFile:
    lines = myFile.readlines()
    for line in lines:
        if ".mp4" in line:
            a = ((str(line)).lstrip()) ### and possibly other data modification to remove "href" etc. from the text lines
            print(a)
            list_1.append(a)

### Use the list to write a new file including only the video links
with open('C:\\...\\video_links.txt', 'w+', encoding='utf-8') as myFile2:
    for i in list_1:
        myFile2.write(str(i) + "\n")

### Use urllib.request to download every video file from the links in your list
counter = 0
for url_link in list_1:
    if "https" in url_link:
        print(url_link)
        urllib.request.urlretrieve(url_link, "video" + str(counter) + ".mp4")
        print("------NOW DOWNLOADED: video" + str(counter) + ".mp4------")
        counter += 1
print("*****COMPLETE******")

# If you are using vscode, the videos are downloaded to the folder where you run the code in (the fila path shown in the terminal)