Index: t3lib/class.t3lib_stdgraphic.php
===================================================================
--- t3lib/class.t3lib_stdgraphic.php	(Revision 6802)
+++ t3lib/class.t3lib_stdgraphic.php	(Arbeitskopie)
@@ -2660,10 +2660,10 @@
 	 * @param	string		Refers to which frame-number to select in the image. '' or 0 will select the first frame, 1 will select the next and so on...
 	 * @return	string		The result of a call to PHP function "exec()"
 	 */
-	function imageMagickExec($input,$output,$params,$frame = 0)	{
+	function imageMagickExec($input,$output,$params,$frame === false) {
 		if (!$this->NO_IMAGE_MAGICK)	{
-			$frame = $frame ? '['.intval($frame).']' : '';
-			$cmd = t3lib_div::imageMagickCommand('convert', $params.' '.$this->wrapFileName($input).$frame.' '.$this->wrapFileName($output));
+			$frame = ((!$this->noFramePrepended && is_numeric($frame)) ? '[' . intval($frame) . ']' : '');
+			$cmd = t3lib_div::imageMagickCommand('convert', $params . ' ' . $this->wrapFileName($input) . $frame . ' ' . $this->wrapFileName($output));
 			$this->IM_commands[] = array($output,$cmd);
 
 			$ret = exec($cmd);