upload video clips display video thumb images not working? php

upload video clips display video thumb images not working? php

I have created an upload_video.php page and having issues with it. Hoping
that some PHP genius irate: can help me out a little for which I would be
ever so grateful.
Change my video page does not display video thumb images. Linked to
include/generatevideothumb.php
In my upload_video.php page I have defined thumb variables as follows
// Thumb size
$th_max_height1 = 150;
$th_max_width1 = 250;
$th_max_width = 55;
$th_max_height = 55;
$thumb_dir="upload/video/thumbs/";
$thumb_dir1="upload/video/thumbs1/";
// Thumb
$thumb_video_name=$video_name;
generatevideothumb($dir,$th_max_width,
$th_max_height,$thumb_dir,$thumb_video_name);
generatevideothumb($dir,$th_max_width1,
$th_max_height1,$thumb_dir1,$thumb_video_name);



The issue is with creating video thumb images. Error is: Warning:
imagecreate() [function.imagecreate]: Invalid image dimensions in
html\include\generatevideothumb.php on line 25
Complete code from generatevideothumb.php below
<?php
function generatevideothumb($im_file,$th_max_width,
$th_max_height,$thumb_dir,$thumb_video_name)
{
@chmod($im_file,0777);
$image_attribs = getimagesize($im_file);
if($image_attribs[0]>$th_max_width)
{
$ratio = $th_max_width/$image_attribs[0];
$th_width = $image_attribs[0] * $ratio;
$th_height = $image_attribs[1] * $ratio;
}
elseif($image_attribs[1]>$th_max_height)
{
$ratio = $th_max_height/$image_attribs[1];
$th_width = $image_attribs[0] * $ratio;
$th_height = $image_attribs[1] * $ratio;
}
else
{
$th_width = $image_attribs[0];
$th_height = $image_attribs[1];
}
**//This code below is where I get that error saying invalid image dimensions
$im_new = imagecreate($th_width,$th_height); //returns an image identifier
representing a black image of size x_size by y_size.
$th_file_name = $thumb_dir.$thumb_video_name;
@chmod($th_file_name,0777);**
if($image_attribs[2]==2)
{
$im_old = imageCreateFromJpeg($im_file);
imagecopyresized($im_new,$im_old,0,0,0,0,$th_width,$th_height,
$image_attribs[0], $image_attribs[1]);
imagejpeg($im_new,$th_file_name,100);
}
elseif($image_attribs[2]==1)
{
$im_old = imagecreatefromgif($im_file);
imageCopyResampled($im_new,$im_old,0,0,0,0,$th_width,$th_height,
$image_attribs[0], $image_attribs[1]);
imagegif($im_new,$th_file_name,100);
}
}
?>