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Autres articles (87)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Les images

    15 mai 2013

  • Déploiements possibles

    31 janvier 2010, par

    Deux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
    L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
    Version mono serveur
    La version mono serveur consiste à n’utiliser qu’une (...)

Sur d’autres sites (2955)

  • avutil/rational : Document what is to be expected from av_d2q() of doubles representin...

    31 janvier 2024, par Michael Niedermayer
    avutil/rational : Document what is to be expected from av_d2q() of doubles representing rational numbers

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavutil/rational.h

  • ffmpeg converter php script not working as expected

    8 juillet 2012, par mintuz

    I have been looking into a php video converter method and have followed a tutorial on how to get one set up. It can read the source video file fine, my script shows an md5, fps rate, bit rate etc but it does not create the destination file. Any suggestions on why my code is not working.

    I have tried both system() ; and exec() ; commands, both do not work and safe_mode is off. I have also tried a more basic command

    "/usr/bin/ffmpeg -i /home/mintuz/video.avi /var/www/video.flv"

    This command however works through the terminal.

    &lt;?php 
    
define(&#39;FFMPEG_LIBRARY&#39;, &#39;/usr/bin/ffmpeg&#39;);
    

    
//ALTER STUFF HERE
    
$srcFile = "/home/mintuz/video.avi"; //source file
    
$destFile = "/var/www/video.flv"; //destination file
    

    

    
if (strpos($srcFile, &#39;.avi&#39;))
    
{
    
    $type = "avi";
    
    echo $type;
    
}
    

    
if (strpos($srcFile, &#39;.mp4&#39;))
    
{
    
    $type = "mp4";
    
    echo $type;
    
}
    

    
if (strpos($srcFile, &#39;.mov&#39;))
    
{
    
    $type = "mov";
    
    echo $type;
    
}
    

    
//-------------------------------------------------------------------------------------------------------------------
    
// Create our FFMPEG-PHP class 
    
$ffmpegObj = new ffmpeg_movie($srcFile); 
    

    
// Save our needed variables 
    
$srcWidth = makeMultipleTwo($ffmpegObj->getFrameWidth()); 
    
echo "<br />".$srcWidth."<br />";
    

    
$srcHeight = makeMultipleTwo($ffmpegObj->getFrameHeight()); 
    
echo $srcHeight."<br />";
    

    
$srcFPS = $ffmpegObj->getFrameRate();
    
echo $srcFPS."<br />"; 
    

    
$srcAB = intval($ffmpegObj->getAudioBitRate()/1000);  
    
$srcAR = $ffmpegObj->getAudioSampleRate();  
    

    
// Call our convert using exec() 
    
$cmd = FFMPEG_LIBRARY." -i ".$srcFile." -ar ".$srcAR." -ab ".$srcAB." -f flv -s ".$srcWidth."x".$srcHeight." ".$destFile;
    
system($cmd); 
    

    
echo "Source File MD5 : ".md5_file($srcFile)."<br />";
    
echo "Destination File MD5 : ".md5_file($destFile);
    

    
// Make multiples function 
    
function makeMultipleTwo ($value) 
    
{ 
    
    $sType = gettype($value/2); 
    
    if($sType == "integer") 
    
    { 
    
        return $value; 
    
    } else { 
    
        return ($value-1); 
    
    } 
    
}
    
?>

  • avcodec/hevcdec : do basic validity check on delta_chroma_weight and offset

    27 juin 2017, par Michael Niedermayer
    avcodec/hevcdec : do basic validity check on delta_chroma_weight and offset

    Fixes : runtime error : signed integer overflow : 2147483520 + 128 cannot be represented in type 'int'
    
Fixes : 2385/clusterfuzz-testcase-minimized-6594333576790016
    

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/hevcdec.c

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