Change Video Width and Heigt! Help!

It's only been a few days since I get to know about drupal.
Everything worked amazingly well except this video module.

What I have is .mov file width of 544 and height of 236, so I assume that it's wider than 16:9

So I followed the topic that I've found on drupal, which is this, http://drupal.org/node/231790

and after I put this file on the right place, I could edit my width manually from the the video node.

then here's a weird problem. No matter I try to edit the dimensions in the setting box, my video is still displayed on the 400*236.

It seems like the page is hiding the rest of video, and only displays part of it.

So here's things I figured out from "view source" from the safari tap;

I checked the source of the movie works fine by tracking where the movie file is saved.

Though I manually did change the width and height, I still see this code, and the movie cannot over 400px in width.

is it a page setting problem or what? please HELP me!