Youtube Videos

Haris · 02-16-2008, 12:51 AM

Is there possibly a way to download youtube videos via PHP?

Wildhoney · 02-16-2008, 03:49 AM

Of course

! I wrote a script once that did this. In fact, I decided to polish up that script seeing as how I haven't contributed much of anything to TalkPHP for a week or 2! Sorry guys. Hopefully this makes it all better.

The example is in the file, but here it is anyway to show you how easy I made it for you all:

php Code:

$pYouTube   -> setAddress('http://www.youtube.com/watch?v=ggShSZUBu5s')
            -> getVideo()
            -> asDownload();

It even gets the proper file name and appends FLV so it's not downloading get_video, as most do. Feel free to offer any suggestions/improvements!

owenj2o · 02-16-2008, 07:51 PM

Would you have any concerns if I used that class as a library in a framework I'm developing?

ReSpawN · 02-16-2008, 09:03 PM

Holy crap Adam, very impressive work on my behalf. Is this also easy to recode to PHP4 OOP?

Welcome back, so to speak, by the way.

Wildhoney · 02-17-2008, 01:16 AM

Thank you

! You could port it over to PHP 4, although such functions as get_header are not available in PHP 4, though there are ways around that by using cURL.

Owen: Help yourself! Give TalkPHP a little mention though when you can please!

I modified the setAddress function earlier. Merely to ensure it can always extract the ID where available. Whereas the previous version, if there's any data trailing the YouTube ID, then it wouldn't work correctly.

php Code:

public function setAddress($szIdentifier)
{
    if(!preg_match('~^[a-z]+$~', $szIdentifier))
    {
        preg_match('~.+?v=(?P<identifier>[^&]+).*~i', $szIdentifier, $aMatches);
        $szIdentifier = $aMatches['identifier'];
    }
            
    $this->m_szIdentifier = $szIdentifier;
            
    return true;
}

Village Idiot · 02-17-2008, 02:34 AM

Hmm, this script downloads a blank flv for me, correct name and all.

Wildhoney · 02-17-2008, 03:35 AM

For a moment there you had me going, as I never actually tested a downloaded FLV. But I'm glad to say it does actually play for me. Albeit in VLC. Windows Media Player never takes kindly to being given an FLV.

Village Idiot · 02-17-2008, 04:34 AM

Hmm, I use flv player where I have used many youtube downloaded videos and it doesnt work. The file is 0 bytes.

Wildhoney · 02-17-2008, 04:10 PM

That's rather peculiar. Does this happen with anybody else?

Salathe · 02-17-2008, 04:45 PM

VI, give us some test cases which don't work for you and we can see if they also don't work for us. :)

Village Idiot · 02-17-2008, 09:35 PM

Theres nothing to give, I just upload the file as is and it gives me a blank file. It does the same with any address I put in there.

Anyway, here is a modification I made that truncates the name after 10 letters (you can set it differently if you want to).

PHP Code:


			
        public function asDownload()
        {
            $szDownloadURL = sprintf
            (
                self::URL_DOWNLOAD,
                $this->m_aVideoData['video_id'],
                $this->m_aVideoData['l_id'],
                $this->m_aVideoData['t_id']
            );

            $aHeaders = get_headers($szDownloadURL, 1);
            
            if(array_key_exists('Content-Length', $aHeaders))
            {
                $iRemoteSize = $aHeaders['Content-Length'];
            }
            
            header('HTTP/1.1 200 OK');
            header('Content-Type: video/flv');
            
            if(isset($iRemoteSize))
            {
                header('Content-Length: ' . $iRemoteSize);
            }
            
            if(strlen($this->m_aVideoData['filename']) > 10)
            {
                $DownloadFileName = substr($this->m_aVideoData['filename'],0,10) . '...flv';
            }
            else
            {
                $DownloadFileName = $this->m_aVideoData['filename'];
            }
            
            header('Content-Disposition: attachment; filename="' . $DownloadFileName . '"');
            header('Content-Transfer-Encoding: Binary');
            
            readfile($szDownloadURL);
        }