erroneous pipeline: no element "TIViddec2"

Hi, I need help to play h264 video with gstreamer

I’m using BeagleBoard C4, Ubuntu with gstreamer.

When I play an avi file from [1] (big buck bunny-surroundfix.avi)
It works fine.

but with this pipeline

gst-launch -v filesrc location=big_buck_bunny_480p_h264.mov ! TIViddec2 codecName=h264dec engineName=codecServer ! TIDmaiVideoSink videoStd=VGA videoOutput=LCD sync=false

it shows:

erroneous pipeline: no element “TIViddec2”

gst-inspect shows nothing about TI, so can anyone help me to get it work?
An good tutorial or guide for gstreamer-ti or how to use those plugins on beagle?

[1] http://elinux.org/BeagleBoardUbuntu#Advanced