convert video

hi.

i'm using this code for video convert mp4 to flv.

but out put come in 0kb.

<?php
$srcFile = "upload_v/El-Bahia-Video.mp4";
$destFile = "upload_v/El-Bahia-Video.flv";
$ffmpegPath = "/usr/bin/ffmpeg";
$flvtool2Path = "/usr/bin/flvtool2";
// Create our FFMPEG-PHP class
$ffmpegObj = new ffmpeg_movie($srcFile);
// Save our needed variables
$srcWidth = makeMultipleTwo($ffmpegObj->getFrameWidth());
$srcHeight = makeMultipleTwo($ffmpegObj->getFrameHeight());
$srcFPS = $ffmpegObj->getFrameRate();
$srcAB = intval($ffmpegObj->getAudioBitRate()/1000);
$srcAR = $ffmpegObj->getAudioSampleRate();
// Call our convert using exec()
//exec($ffmpegPath . " -i " . $srcFile . " -ar " . $srcAR . " -ab " . $srcAB . " -f flv -s " . $srcWidth . "x" . $srcHeight . " " . $destFile . " | " . $flvtool2Path . " -U stdin " . $destFile);


/*exec($ffmpegPath." -i " . $srcFile ." -ar " . 22050 ." -ab ". 32 . " -f flv -s " . $srcWidth . "x" . $srcHeight .$destFile);*/
// Make multiples function
function makeMultipleTwo ($value)
{
$sType = gettype($value/2);
if($sType == "integer")
{
return $value;
} else {
return ($value-1);
}
}
?>

 

hi
thanks but these day video converting is easy. one can use total video converter.

 

hi..

i want to convert video in php and use ffmpeg for video convert.

how can we get proper out put.

i'm using above code for video convert.