webVideoViewer/readfile.php

<?php

if(!isset($_GET['file']) || !$_GET['file']) {
    die();
}

$mime = explode(';', finfo_file(finfo_open(FILEINFO_MIME), $_GET['file']));


header('Content-Type: ' . $mime[0]);

$handle = fopen($_GET['file'], "r");
$filesize = filesize($_GET['file']);
$fs = 2097152; // read 2mb per cycle
while($fs < $filesize) {
    echo fread($handle, $fs);
}
fclose($handle);