How to Retrieve YouTube Video Thumbnails using PHP and cURL
Question:
How to use PHP and cURL Get thumbnail associated with YouTube video from YouTube API?
Answer:
Each YouTube video has four generated images. Their format can be predicted as follows:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/0.jpg https://img.youtube.com/vi/<insert-youtube-video-id-here>/1.jpg https://img.youtube.com/vi/<insert-youtube-video-id-here>/2.jpg https://img.youtube.com/vi/<insert-youtube-video-id-here>/3.jpg
The first in the list is a full-size image, the others are thumbnail images. The default thumbnail image (i.e. one of 1.jpg, 2.jpg, 3.jpg) is:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/default.jpg
For a high-quality version of the thumbnail, use a URL similar to the following:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/hqdefault.jpg
There is also a medium quality version of the thumbnail, using something similar to HQ URL:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/mqdefault.jpg
For the standard definition version of the thumbnail, use a URL similar to:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/sddefault.jpg
For the maximum resolution version of the thumbnail, use something like The following URLs:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg
All the above URLs are also available via HTTP. Additionally, in the example URL above, the slightly shorter hostname i3.ytimg.com could replace img.youtube.com.
Alternatively, you can use the YouTube Data API (v3) to get the thumbnail image.
The above is the detailed content of How to Get YouTube Video Thumbnails Using PHP and cURL?. For more information, please follow other related articles on the PHP Chinese website!

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