<?php
if (isset($_POST['yt'])) {
    ini_set('max_execution_time', 0);
    $useragent
        = "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36";
    $v = base64_decode($_POST['yt']);
    parse_str($v);
    if (!isset($mime)) {
        $mime = "video/mp4";
    }
    $extension = explode("/", $mime)[1];
	if(explode("/", $mime)[0]=='audio') $extension = 'mp3';

    if (!isset($title)) {
        $title = "video";
    }
    $title = $title . "." . $extension;
    header('Content-Type: application/octet-stream');
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 222222);
    curl_setopt($ch, CURLOPT_URL, $v);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
    curl_setopt($ch, CURLOPT_NOBODY, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $info = curl_exec($ch);
    $size2 = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);
    header('Content-Type: application/octet-stream');

    $filesize = $size2;
    $offset = 0;
    $length = $filesize;
    if (isset($_SERVER['HTTP_RANGE'])) {
        $partialContent = "true";
        preg_match('/bytes=(\d+)-(\d+)?/', $_SERVER['HTTP_RANGE'], $matches);
        $offset = intval($matches[1]);
        $length = $size2 - $offset - 1;
    } else {
        $partialContent = "false";
    }
    if ($partialContent == "true") {
        header('HTTP/1.1 206 Partial Content');
        header('Accept-Ranges: bytes');
        header('Content-Range: bytes ' . $offset .
            '-' . ($offset + $length) .
            '/' . $filesize);
    } else {
        header('Accept-Ranges: bytes');
    }
    header("Content-length: " . $size2);
    header('Content-Disposition: filename="' . $title . '"');

    $ch = curl_init();
    if (isset($_SERVER['HTTP_RANGE'])) {
        // if the HTTP_RANGE header is set we're dealing with partial content
        $partialContent = true;
        // find the requested range
        // this might be too simplistic, apparently the client can request
        // multiple ranges, which can become pretty complex, so ignore it for now
        preg_match('/bytes=(\d+)-(\d+)?/', $_SERVER['HTTP_RANGE'], $matches);
        $offset = intval($matches[1]);
        $length = $filesize - $offset - 1;
        $headers = array(
            'Range: bytes=' . $offset .
            '-' . ($offset + $length) .
            ''
        );
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 222222);
    curl_setopt($ch, CURLOPT_URL, $v);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
    curl_setopt($ch, CURLOPT_NOBODY, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
    curl_exec($ch);
}

?>