PHP script to output an mjpeg video from a jpeg file directory

mjpeg_video_output.php

<?php

$photos = array();

// $photos comes with a list of files (maybe with their absolute path) 
// of images (here they are jpeg files!) to output

// http://en.wikipedia.org/wiki/Motion_JPEG
// https://github.com/berak/netcam/blob/master/netcam/main.cpp

ignore_user_abort(false);
set_time_limit(30);

$boundary='mjpeg'.md5(rand());

header("Server: Mozarella/2.2");
header("Accept-Range: bytes");
header("Connection: close");
header('Content-Type: multipart/x-mixed-replace; boundary='.$boundary);

$j=0;
$buf = array();
// while the connection is up
// output the video in loop mode
// each image frame is repeated twice
while(count($photos)) {
	
	if(!isset($buf[$j])) {
		$buf[$j] = @file_get_contents(end(explode(":",$photos[$j])));
	}
	
	for($i=0;$i<2;$i++) {
		echo "--".$boundary."\r\n";
		echo 'Content-Type: image/jpeg'."\r\n";
		echo 'Content-Description: '.basename($photo_name)."\r\n";
		echo 'Content-Length: '.strlen($buf[$j])."\r\n";
		echo "\r\n".$buf[$j]."\r\n\r\n";
	}
	
	// Did the connection fail?
	if(connection_status() != CONNECTION_NORMAL) {
	  break;
  }
	
	$j = ( $j + 1 ) % count($photos);
}

?>