Embedding Quicktime player through HTML in Mail app

I have searched this forum and the internet for a while now and cannot seem to find a solution.

For months I had no problems with sending out videos in mail with the help of embeddeding a quicktime player.

I would make up a simple html file with the player code included, opened in Safari and clicked on "Mail Contents Of This Page".

The email would then open in mail and display my video (not attach it)

About a month ago this has stopped working. The email does open and play the video correctly, although when sent out to other people (including myself) the message appears blank, with just a couple of lines of blank space.

here's the code I've used:

<object width="480" height="25"
classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"
codebase="http://www.apple.com/qtactivex/qtplugin.cab">
<param name="src" value="sample.mov">
<param name="autoplay" value="true">
<param name="controller" value="false">

<embed src=" URL of my video " width="480" height="255"
autoplay="true" controller="false" loop="false"
pluginspage="http://www.apple.com/quicktime/download/">
</embed>

</object>

Click to expand...

I'm on Mail 4.5, tried switching back to the older version. Also tried selecting a different default email reader in the mail preferences, then restart, then try again. Didn't make a difference.

OSX 10.6.8 and all my software is up to date.