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the gstreamer on ubuntu 12.04 doesn't support hw decode of h.264/mpeg4 video?

I upgrade the ubuntu system from 10.10(marvick) to 12.04(precise) on pandaboard, but I find the gstreamer isn't supported well on precise version as on marvick version. For example, the speed h.264 decode using gstreamer on precise is much slower than  on marvick. to find some reason, I notice that some libraries like libOMX.TI.DUCATI.VIDEO.H264D.so is absent in /usr/lib/ on precise, while it exist in the corresponding path on marvick. so, I have the question why thoes libraries is absent on prcecise version, and when they will be added to the system?

thanks.