使用PHP CURL下载MP4文件

我正在尝试将视频从我的一个服务器下载到另一个服务器。我使用CURL是因为copy()没有从视频中下载音频。但是,CURL下载了损坏的文件(?)不要这样做。以下是我现在下载MP4文件的方式:

$source = "https://link.com/video.mp4";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $source);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSLVERSION,3);
$data = curl_exec ($ch);
$error = curl_error($ch);
curl_close ($ch);

$destination = "video/video.mp4";
$file = fopen($destination, "wb");
fwrite($file, $data);
fclose($file);

有什么特别的MP4文件可以正确下载吗?

array(26) { ["url"]=> string(60) "https://link.com/video.mp4" ["content_type"]=> NULL ["http_code"]=> int(0) ["header_size"]=> int(0) ["request_size"]=> int(0) ["filetime"]=> int(-1) ["ssl_verify_result"]=> int(1) ["redirect_count"]=> int(0) ["total_time"]=> float(0.135745) ["namelookup_time"]=> float(8.4E-5) ["connect_time"]=> float(0.056009) ["pretransfer_time"]=> float(0) ["size_upload"]=> float(0) ["size_download"]=> float(0) ["speed_download"]=> float(0) ["speed_upload"]=> float(0) ["download_content_length"]=> float(-1) ["upload_content_length"]=> float(-1) ["starttransfer_time"]=> float(0) ["redirect_time"]=> float(0) ["redirect_url"]=> string(0) "" ["primary_ip"]=> string(13) "AN-IP :D" ["certinfo"]=> array(0) { } ["primary_port"]=> int(443) ["local_ip"]=> string(11) "192.168.0.9" ["local_port"]=> int(57478) }