HTML - embedded mp4 video

I have a number of .mp4 files which have the dimensions of 12开发者_JS百科80x720. I want them to be half that size, yet when I define the width and height of the object tag etc., the video is not resized, merely zoomed in.

Is there any way of resizing it with HTML, rather than having to manually resize all the videos?

Thanks,

Will.

You don't want to do that, assuming all things are equal, it will take the user 4 times longer to download the video as you expect.

Be nice to users and resize them!