php exec(); withffmpeg

i am trying to get an upload form that will allow a single user to upload a file and then it converts the file to flv. It then creates a thumb and dumps both thumb and flv into a folder. I have installed ffmpeg and converted files and created thumbs using command line. when i put it the php script, it doesn’t work. it uploads the file but doesn’t convert anything or create the thumb.

[code]
exec(“ffmpeg -i ‘.$uploadfile.’ -f mjpeg -vframes 1 -s 150×150 -an ‘.$new_image_path.'”);

exec(“ffmpeg -i ‘.$uploadfile.’ -f flv -s 320×240 ‘.$new_flv.'”);

[/code]

the full code that I am using is

[code]
<?php
/*
Video Upload and thumbnail generator with ffmpeg. This code is written by John Anderson of Vermont Internet Design.
*/
// size input prevents buffer overrun exploits.
function sizeinput($input, $len){
(int)$len;
(string)$input;
$n = substr($input, 0,$len);
$ret = trim($n);
$out = htmlentities($ret, ENT_QUOTES);
return $out;
}
//Check the file is of correct format.
function checkfile($input){
$ext = array(‘mpg’, ‘wma’, ‘mov’, ‘flv’, ‘mp4’, ‘avi’, ‘qt’, ‘wmv’, ‘rm’);
$extfile = substr($input[‘name’],-4);
$extfile = explode(‘.’,$extfile);
$good = array();
$extfile = $extfile[1];
if(in_array($extfile, $ext)){
$good[‘safe’] = true;
$good[‘ext’] = $extfile;
}else{
$good[‘safe’] = false;
}
return $good;
}
$user_id = $_SESSION[‘table_id’];
// if the form was submitted process request if there is a file for uploading
if($_POST && array_key_exists(“vid_file”, $_FILES)){
//$uploaddir is for videos before conversion
$uploaddir = ‘/var/www/beth/vid/uploads/videos/’;
//$live_dir is for videos after converted to flv
$live_dir = ‘/var/www/beth/vid/uploads/live/’;
//$live_img is for the first frame thumbs.
$live_img = ‘/var/www/beth/vid/uploads/images/’;
$seed = rand(1,2009) * rand(1,10);
$upload = $seed. basename($_FILES[‘vid_file’][‘name’]);
$uploadfile = $uploaddir .$upload;
$vid_title = sizeinput($_POST[‘vid_title’], 50);
$vid_desc = sizeinput($_POST[‘vid_description’], 200);
$vid_cat = (int)$_POST[‘vid_cat’];
$vid_usr_ip = $_SERVER[‘REMOTE_ADDR’];
$safe_file = checkfile($_FILES[‘vid_file’]);
if($safe_file[‘safe’] == 1){
if (move_uploaded_file($_FILES[‘vid_file’][‘tmp_name’], $uploadfile)) {
echo “File is valid, and was successfully uploaded.<br/>”;
$base = basename($uploadfile, $safe_file[‘ext’]);
$new_file = $base.’flv’;
$new_image = $base.’jpg’;
$new_image_path = $live_img.$new_image;
$new_flv = $live_dir.$new_file;
//ececute ffmpeg generate flv
exec(“ffmpeg -i ‘.$uploadfile.’ -f flv -s 320×240 ‘.$new_flv.'”);

//execute ffmpeg and create thumb
exec(“ffmpeg -i ‘.$uploadfile.’ -f mjpeg -vframes 1 -s 150×150 -an ‘.$new_image_path.'”);
echo ‘Thank You For Your Video!<br>’;
//create query to store video
$sql = ‘INSERT INTO videos (vid_cat_id, vid_user, vid_title, vid_desc, vid_file_name, image_file, vid_usr_ip) VALUES(”.$vid_cat.”, ”.$user_id.”, ”.$vid_title.”, ”.$vid_desc.”, ”.$new_file.”, ”.$new_image.”, ”.$vid_usr_ip.”)’;
$mysql = new mysqli(‘localhost’, ‘root’, ‘4jaiants’, ‘vid’);
echo ‘<img src=”‘.$new_image_path.'” /><br/>
<h3>’.$vid_title.'</h3>’;
mysqli_query($mysql, $sql) or die(mysqli_error($mysql));
} else {
echo “Possible file upload attack!n”;
print_r($_FILES);
}

}else{

echo ‘Invalid File Type Please Try Again. You file must be of type
.mpg, .wma, .mov, .flv, .mp4, .avi, .qt, .wmv, .rm’;

}
}
?>
<form action=”” method=”post” enctype=”multipart/form-data” name=”form1″ id=”form1″>
<p align=”left”>Please upload Your video. Thumbnails of your videos are based on the first frame of your video. <br /><h3>Please allow up to a minute for your video to upload. </h3>
</p>
<table width=”600″ border=”0″ align=”center” cellpadding=”2″ cellspacing=”2″>
<tr>
<td width=”260″ align=”left” colspan=”3″><div align=”center”>
<h3>Upload your Video ! </h3>
</div></td>
</tr>
<tr>
<td width=”260″ align=”left”>&nbsp;</td>
<td width=”326″ align=”left”>&nbsp;</td>
</tr>
<tr>
<td align=”left”>Title Of Video : </td>
<td align=”left”><input name=”vid_title” type=”text” id=”vid_title” /></td>
</tr>
<tr>
<td align=”left”>File: .mov, .avi, .wma , .mpeg : </td>
<td align=”left”><input name=”vid_file” type=”file” id=”vid_file” /></td>
</tr>
<tr>
<td align=”left”>Description:</td>
<td align=”left”><textarea name=”vid_description” id=”vid_description”></textarea></td>
</tr>
<tr>
<td align=”left”>Category:</td>
<td align=”left”><select name=”vid_cat”>
<option value=”1″ selected=”selected”>Video</option>
<option value=”2″>Cat1</option>

</select>
</td>
</tr>
<tr>
<td>&nbsp;</td>
<td><input type=”submit” name=”Submit” value=”Upload Video” /></td>
</tr>
</table>

</form>
[/code]

any help would be great, i have tried a number of things and reading anything i can.

Also in #PHP _↴