fail to play RTSP nvr live stream, Missing decoder: application/x-rtp, no suitable plugins found

[jack.chen]

Hi, we are trying play a nvr live stream with RTSP, but it report :
I/GStreamer: GStreamer initialized:
playing:false position:0 uri: rtsp://admin:8888@192.168.1.254:554/unicast/c2/s0/live
...
W/GStreamer+decodebin: 0:00:12.878047704 0x7d64935320 gstdecodebin2.c:4640:gst_decode_bin_expose: error: no suitable plugins found:
Missing decoder: application/x-rtp (application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)0, encoding-name=(string)H264, packetization-mode=(string)0, profile-level-id=(string)000167, sprop-parameter-sets=(string)"AAABZ00AKp2oHgCJ+VA=,AAABaO48gA==", a-framerate=(string)30, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1, ssrc=(uint)2625634515)
W/GStreamer+decodebin: 0:00:12.878074526 0x7d64937ca0 gstdecodebin2.c:4640:gst_decode_bin_expose: error: no suitable plugins found:
Missing decoder: application/x-rtp (application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)0, encoding-name=(string)PCMU, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1, ssrc=(uint)2625634515)
W/GStreamer+uridecodebin: 0:00:12.878132808 0x7d64937ca0 gsturidecodebin.c:988:no_more_pads_full: error: no suitable plugins found:
gstdecodebin2.c(4640): gst_decode_bin_expose (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0:
no suitable plugins found:
Missing decoder: application/x-rtp (application/x-rtp, media=(string)audio, payload=(int)0, clock-rate=(int)0, encoding-name=(string)PCMU, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1, ssrc=(uint)2625634515)
gstdecodebin2.c(4640): gst_decode_bin_expose (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin1:
no suitable plugins found:
Missing decoder: application/x-rtp (application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)0, encoding-name=(string)H264, packetization-mode=(string)0, profile-level-id=(string)000167, sprop-parameter-sets=(string)"AAABZ00AKp2oHgCJ+VA=,AAABaO48gA==", a-framerate=(string)30, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1, ssrc=(u
D/GStreamer+tutorial-5: 0:00:12.878321245 0x7d64e61d80 /Users/irich/Work2/gst-docs/examples/tutorials/android/android-tutorial-5/jni/tutorial-5.c:105:set_ui_message Setting message to: Error received from element uridecodebin0: Your GStreamer installation is missing a plug-in.
W/GStreamer+basesrc: 0:00:12.878557079 0x7d64846a80 gstbasesrc.c:3055:gst_base_src_loop: error: Internal data stream error.
0:00:12.878596714 0x7d64846a80 gstbasesrc.c:3055:gst_base_src_loop: error: streaming stopped, reason not-linked (-1)

What is the missing? How to fix?

Thanks,