Saturday, July 18, 2009

FFMPEG - Video conversion tool

FFMPEG PHP grab information from video files
FFMPEG - PHP libraries serve a lot in video sharing applications. They can convert video files of any formats to other formats. Also we can grab video information from the files.
Some servers provide ffmpeg hosting.
Using the folowing configuration we can create a video sharing site.

* GD Library 2 or higher
* Mplayer + Mencoder (http://www.mplayerhq.hu/design7/dload.html)
* Flv2tool (http://inlet-media.de/flvtool2)
* Libogg + Libvorbis (http://www.xiph.org/downloads)
* LAME MP3 Encoder (http://lame.sourceforge.net)
* FFMPEG


Here you can find a simple script which built under php-ffmpeg for grabbing video information and creates a thumbnail






class PHP_FFMPEG
{

function getVideoInformation($videoPath)
{
$movie = new ffmpeg_movie($videoPath,false);

$this->videoDuration = $movie->getDuration();
$this->frameCount = $movie->getFrameCount();
$this->frameRate = $movie->getFrameRate();
$this->videoTitle = $movie->getTitle();
$this->author = $movie->getAuthor() ;
$this->copyright = $movie->getCopyright();
$this->frameHeight = $movie->getFrameHeight();
$this->frameWidth = $movie->getFrameWidth();
$this->pixelFormat = $movie->getPixelFormat();
$this->bitRate = $movie->getVideoBitRate();
$this->videoCodec = $movie->getVideoCodec();
$this->audioCodec = $movie->getAudioCodec();
$this->hasAudio = $movie->hasAudio();
$this->audSampleRate = $movie->getAudioSampleRate();
$this->audBitRate = $movie->getAudioBitRate();


}


function getAudioInformation($videoPath)
{
$movie = new ffmpeg_movie($videoPath,false);

$this->audioDuration = $movie->getDuration();
$this->frameCount = $movie->getFrameCount();
$this->frameRate = $movie->getFrameRate();
$this->audioTitle = $movie->getTitle();
$this->author = $movie->getAuthor() ;
$this->copyright = $movie->getCopyright();
$this->artist = $movie->getArtist();
$this->track = $movie->getTrackNumber();
$this->bitRate = $movie->getBitRate();
$this->audioChannels = $movie->getAudioChannels();
$this->audioCodec = $movie->getAudioCodec();
$this->audSampleRate = $movie->getAudioSampleRate();
$this->audBitRate = $movie->getAudioBitRate();

}

function getThumbImage($videoPath)
{
$movie = new ffmpeg_movie($videoPath,false);
$this->videoDuration = $movie->getDuration();
$this->frameCount = $movie->getFrameCount();
$this->frameRate = $movie->getFrameRate();
$this->videoTitle = $movie->getTitle();
$this->author = $movie->getAuthor() ;
$this->copyright = $movie->getCopyright();
$this->frameHeight = $movie->getFrameHeight();
$this->frameWidth = $movie->getFrameWidth();

$capPos = ceil($this->frameCount/4);

if($this->frameWidth>120)
{
$cropWidth = ceil(($this->frameWidth-120)/2);
}
else
{
$cropWidth =0;
}
if($this->frameHeight>90)
{
$cropHeight = ceil(($this->frameHeight-90)/2);
}
else
{
$cropHeight = 0;
}
if($cropWidth%2!=0)
{
$cropWidth = $cropWidth-1;
}
if($cropHeight%2!=0)
{
$cropHeight = $cropHeight-1;
}

$frameObject = $movie->getFrame($capPos);


if($frameObject)
{
$imageName = "tmb_vid_"1212.jpg";
$tmbPath = "/home/home_Dir/public_html/uploads/thumb/".$imageName;
$frameObject->resize(120,90,0,0,0,0);
imagejpeg($frameObject->toGDImage(),$tmbPath);
}
else
{
$imageName="";
}


return $imageName;

}






}




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