On Thu, 2010-04-29 at 05:01 -0700, Wes Miller wrote: > image/jpeg,width=640,height=480 ! matroskamux ! tee name=fred. ! queue ! ^ Remove that dot. Dots are used by the parser to differentiate between elements (before the dot) and pads (after the dot). So putting dots in names will likely confuse gst-launch and make it not work. Benjamin