使用Python嵌入youtube-dl 2020.3.24下载YouTube视频时遭遇“Unable to extract video data”错误求助

Hey there, let's break down what's going wrong here:

The Root Cause #

Your youtube-dl version (2020.3.24) is way out of date—and here's why that matters:

• youtube-dl stopped active development back in 2021. Since then, YouTube has repeatedly updated its page structure, anti-scraping mechanisms, and video data APIs.
• Old versions like 2020.3.24 simply don't know how to parse YouTube's current webpage layout, hence the "Unable to extract video data" error.

The Fix: Switch to yt-dlp #

The best solution is to use yt-dlp—an actively maintained fork of youtube-dl that keeps up with YouTube's constant changes. Here's how to make the switch:

1. Uninstall the outdated youtube-dl
   Run this command in your terminal:

   pip3 uninstall youtube-dl
   

2. Install yt-dlp
   Use pip to install the latest version:

   pip3 install yt-dlp
   

3. Update your code
   The API is almost identical to youtube-dl, so you only need to change the import line. Here's your modified script:

   # ydl1.py
   from __future__ import unicode_literals
   import yt_dlp
   
   ydl_opts = {}
   with yt_dlp.YoutubeDL(ydl_opts) as ydl:
       ydl.download(['https://www.youtube.com/watch?v=dP15zlyra3c'])
   

4. Run the script again
   Execute your updated ydl1.py—it should now download the video without issues.

Bonus: Customize Your Downloads (Optional) #

yt-dlp supports all the old youtube-dl options plus tons more. For example, to download the highest quality combined audio+video, you could update ydl_opts like this:

ydl_opts = {
    'format': 'bestvideo+bestaudio/best',
}

内容的提问来源于stack exchange，提问作者Tiel