Each YouTube video has four generated images. They are predictably formatted 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 one in the list is a full size image and 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 the high quality version of the thumbnail use a URL similar to this:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/hqdefault.jpg
There is also a medium quality version of the thumbnail, using a URL similar to the HQ:
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 this:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/sddefault.jpg
For the maximum resolution version of the thumbnail use a URL similar to this:
https://img.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg
All of the above URLs are available over HTTP too. Additionally, the slightly shorter hostname i3.ytimg.com
works in place of img.youtube.com
in the example URLs above.
Alternatively, you can use the YouTube Data API (v3) to get thumbnail images.
<?php
$targetPath = '/tmp/';
$filename = $targetPath . 'tmpfile';
$headerBuff = fopen('/tmp/headers', 'w+');
$fileTarget = fopen($filename, 'w');
$ch = curl_init('http://www.example.com/');
curl_setopt($ch, CURLOPT_WRITEHEADER, $headerBuff);
curl_setopt($ch, CURLOPT_FILE, $fileTarget);
curl_exec($ch);
if(!curl_errno($ch)) {
rewind($headerBuff);
$headers = stream_get_contents($headerBuff);
if(preg_match('/Content-Disposition: .*filename=([^ ]+)/', $headers, $matches)) {
rename($filename, $targetPath . $matches[1]);
}
}
curl_close($ch);
I initially tried to use php://memory instead of /tmp/headers
, 'cause using temp files for this sort of thing is sloppy, but for some reason I couldn't get that working. But at least you get the idea...
Alternately, you could use CURLOPT_HEADERFUNCTION
Best Answer
Of course, you can add header
filename
, but it won't work, because proper header for download is:So, you code should be: