actually the vedio works fine if we play from our machine. The issue is happening only when we are trying play online. Please see the below link to reproduce the issue (please click on play button which will appear in below page.)
The QuickTime file has dimensions of 1272X960 but your html "object tag" code shows 1024X768.
The QuickTime browser plug-in is only following the instructions given to it and is trying to shove a larger object into a smaller space.
You can fix the issue by editing the pop up window code height and width tags so the two match.
You could also add to the object tag a special param name = "scaled" value="tofit" so the larger video file will fit the smaller space.