Streaming .mov files from dropbox

Hi,

We have a site at http://demo.online-communities.org/ and are trying to stream some of our videos from dropbox.

We have been able to stream .mp4 files using the following code
<p><video width="640" height="480" controls="controls">
<source src="https://dl.dropboxusercontent.com/s/96vicpakrxfcv1d/Carly%20Southern%20-%20cats.mp4?dl=0"; type="video/mp4">
</video></p>

When we try to stream .mov files we get a zero length and a blank video player.
<video width="640" height="480" controls="controls">
<source src="https://www.dropbox.com/s/h3j6grnmxucfgzi/Richard%20Southern%20-%20IMG_1642.MOV?dl=0"; type="video/quicktime"></source>
</video>

You can access the site using xxx / xxx

If you click on Diary and then select test from the list of posts you will see that the top video is blank but the .mp4 one plays fine.

You can edit the post and select the code tool (<>) to see the code behind the post.

Any help would really be appreciated.

Thanks
Carly.