Download a Facebook Video (.mp4) via PHP - php

Question

So for example I have this URL:
http://video.ak.fbcdn.net/hvideo-ak-prn2/v/1032822_578813298845318_1606611618_n.mp4?oh=c3c6a02985213f7c47386f4653792ca6&oe=5200506F&__gda__=1375798216_02752679a44bc4b3c514bee21e000959
How can I download the video source file via PHP?
Note that downloading the URL will not give me the video source!
// does not work:
file_put_contents('video.mp4', 'http://video.ak.fbcdn.net/hvideo-ak-prn2/v/1032822_578813298845318_1606611618_n.mp4?oh=c3c6a02985213f7c47386f4653792ca6&oe=5200506F&__gda__=1375798216_02752679a44bc4b3c514bee21e000959');
// this does not download the video source but instead gets me a file that links to the video hosted on Facebook.

Answer 1

file_put_contents('derp.mp4', file_get_contents('http://video.ak.fbcdn.net/hvideo-ak-prn2/v/1032822_578813298845318_1606611618_n.mp4?oh=c3c6a02985213f7c47386f4653792ca6&oe=5200506F&__gda__=1375798216_02752679a44bc4b3c514bee21e000959'));

Answer 2

This code is more smart, you just have to provide the video link in this code. To get the video link simple right click on video and then click Show Video link or you can directly copy video link from browser URL bar as shown in below image:
Then paste that URL in PASTE_FACEBBOOK_VIDEO_LINK_HERE section of code below
<?php
$options = array('http' => array('user_agent' => 'custom user agent string'));
$context = stream_context_create($options);
$response = file_get_contents('__PASTE_FACEBBOOK_VIDEO_LINK_HERE__', false, $context);
preg_match_all('#\bhttps?://[^,\s()<>]+(?:\([\w\d]+\)|([^,[:punct:]\s]|/))#', strip_tags($response), $match);
$searchword = 'video';
$matches = array_filter($match[0], function($var) use ($searchword) { return preg_match("/\b$searchword\b/i", $var); });
$filename = rand().".mp4";
file_put_contents($filename, fopen(reset($matches), 'r'));
The resultant .mp4 file will look like i.e 24424353.mp4

Answer 3

There is a simple way of doing this. You need to create the functions for the HD and SD quality and then the file getting function which uses curl
function hdLink($curl_content)
{
$regex = '/hd_src:"([^"]+)"/';
if (preg_match($regex, $curl_content, $match)) {
return $match[1];
} else {
return;
}
}
function sdLink($curl_content)
{
$regex = '/sd_src_no_ratelimit:"([^"]+)"/';
if (preg_match($regex, $curl_content, $match1)) {
return $match1[1];
} else {
return;
}
}
function url_get_contents($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.10240');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
So in your HTML you will pass the Facebook video URL to the url_get_contents() function
<?php
require_once("functions.php");
if (!empty($_POST["url"]) ) {
$data = url_get_contents($_POST["url"]);
$hdlink = hdLink($data);
$sdlink = sdLink($data);
if (!empty($sdlink) && !empty($hdlink) ) {?>
<a target="_blank" download data-href="<?php echo $hdlink; ?>" href="<?php echo $hdlink; ?>" class="btn btn-block btn-lg btn-success">Download Video</a>
<?php }
}
?>
Reference: How to develop your own Facebook Video Downloader in 3 Steps on answerbox.net