QuickTime loading new movie not scaling - quicktime

Question

I have the following code, mainly copied from Apple's QT Guide, which I use to display a few movies:
<noscript>
<object id="video_obj" TARGETCACHE="true" width="480" height="320" classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" codebase="http://www.apple.com/qtactivex/qtplugin.cab">
<param name="src" value="images/loginbig.gif" />
<param name="controller" value="true" />
<param name="autoplay" value="false" />
<param name="postdomevents" value="true" />
<param name="TARGETCACHE", value="true"/ >
<embed src="images/loginbig.gif"
width="480" height="320"
controller="true" autoplay="false"
scale="aspect" cache="true"
name="video_obj"
id="video_obj_embed"
postdomevents="true"
TARGETCACHE="true"
pluginspage="http://www.apple.com/quicktime/download/"
/>
</object>
</noscript>
<script language="javascript" type="text/javascript">
QT_WriteOBJECT('images/loginbig.gif' , '480', '320', ''
,'id','video_obj'
,'controller', 'true'
,'postdomevents', 'true'
,'cache', 'true'
,'autoplay', 'false'
,'emb#id','video_obj_embed'
,'emb#scale','aspect'
,'name', 'video_obj'
,'type', 'video/quicktime'
,'scale', 'aspect'
);
</script>
<script type="text/javascript" charset="utf-8">
var video = document.video_obj;
</script>
I change video by doing
video.SetURL('http://dns.com/video.mp4');
But if the new video's size is larger than the preset width and height, it won't automatically fit to the video screen, I tried everything I can think of and read up but to no avail. Please do share your advice on how one may tackle this.
Thanks!

Answer 1

You have aspect defined in the embed tag, but not in the params. I think you may need to add this: <param name="scale" value="aspect" />

Answer 2

To keep the parameters from the plugin initialization for other videos, use 'SAVEEMBEDTAGS','true'
QT_WriteOBJECT('logo.mov' , '720', '576', '',
'EnableJavaScript', 'True',
'emb#NAME' , 'movie1' ,
'obj#id' , 'movie1',
'controller', 'false' ,
'scale', 'tofit',
'SAVEEMBEDTAGS','true' ) ;