如何从 id 中抓取 youtube 视频的缩略图?

问题描述：

我对 python 非常陌生，我想知道如何只打印 maxres 缩略图，而不是字面上关于视频的所有内容.抱歉，如果答案有点明显，我对 Python 和一般编程有点陌生.

I am very new to python, I'm wondering how I would just get the maxres thumbnail to print, instead of literally everything about the video. Sorry if the answer is a bit obvious, I am a bit new to python and programming in general.

from apiclient.discovery import build

DEVELOPER_KEY = 'xxxxxx'
youtube = build('youtube', 'v3', developerKey=DEVELOPER_KEY)

ids = '6Gw-RyTRMns'
results = youtube.videos().list(id=ids, part='snippet').execute()
for result in results.get('items', []):
    print(results)

我还想知道是否有办法从给定视频的描述中获取图片的 URL 并将其保存到文件夹中.

I'm also wondering if there is a way to grab a URL to a picture from a description of a given video and have it saved to a folder.

答

多亏了 YouTube，这一切变得容易了.他们使用如下链接来检索不同分辨率的缩略图.假设您只需要 URL，只需将字符串格式化如下:

This has been made easy thanks to YouTube. They use links like the one below to retreive thumbnails at different resolutions. Assuming all you need is the URL, just format a string like this:

http://img.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg

您可以在这里找到类似的问题:如何从 YouTube API 获取 YouTube 视频缩略图?

You can find a similar question here: How do I get a YouTube video thumbnail from the YouTube API?

您可以在此处找到有关 Api 的更多信息:https://developers.google.com/youtube/v3/

You can find more information on the Api here: https://developers.google.com/youtube/v3/

要遍历频道，您可以在这里找到另一个类似的问题:python:获取频道的所有 youtube 视频网址

To iterate over a channel you can find another similar question here: python: get all youtube video urls of a channel

要下载图像，您可以使用类似的方法.

To download the images you could use something like this.

import urllib
urllib.urlretrieve("http://img.youtube.com/vi/ytvideo/0.jpg")

如何从 id 中抓取 youtube 视频的缩略图?

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