I can't run streaming video WebM with Icecast2 both on Windows and Linux

Question

I trying run a stream using WebM format, but it don't running. The image below show the web page with loading always but not loaded.

Is important notice, I made two servers, one linux and other windows. I try send the video through of OSB Windows and Linux and both show same problem. Please help me.

This is the configuration:

Image of configuration

This is the result:

enter image description here