If I use:
player.swf?config=http://example.com/embed/video.php?id=weILNyHEqmI
with the code:
<config>
<link>http://example.com/</link>
<file>http://www.youtube.com/watch?v=weILNyHEqmI</file>
<image>http://example.com/path-to-image.png</image>
<repeat>true</repeat>
<autostart>false</autostart>
</config>
it shows :
Video not found:
What is the problem? What can I do?
Have you tried setting the provider to youtube?
And are you reference the yt.swf? You need to host it for youtube video, if you look in Firebug where your player you should see a call to it.