streaming vp8 in a .ogg container?

[ydegoyon at gmail.com]

ola,

i read here that it is possible to stream a vp8 encoded stream
in an .ogg container :

http://blogs.gnome.org/uraeus/2010/05/19/webm-and-gstreamer/

but i couldn't find the howto to do this.

as no icecast version that i know of support a matroska container,
this option might be a solution to stream vp8 video stream
without too much effort.

i have the latest git version of gstreamer here
and tried :

gst-launch v4l2src device=/dev/video0 ! 
video/x-raw-yuv,width=320,height=240 ! videorate ! 
video/x-raw-yuv,framerate=25/2 ! ffmpegcolorspace ! vp8enc speed=2 ! 
oggmux ! shout2send ip=www.giss.tv port=8000 mount=jenesaisquoi.ogg 
password=*****

but it fails with :
'notification: This doesn't look like a Speex file'
( from shout2send i guess ).

so what is the exact command to achieve this?
thanx in advance

sevy