[gst-devel] Error:Could not configure supporting library

[libing195]

hi,all:
   I want to receive H.264 live stream and convert to MPEG2 TS and save to *.ts file.
VIDEO_CAPS="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H264"
LATENCY=200
this is my command:
gst-launch -v gstrtpbin name=rtpbin latency=$LATENCY \
     udpsrc caps=$VIDEO_CAPS port=4234 ! rtph264depay ! queue ! ffmux_mpegts ! queue ! filesink location=h264_mp2t.ts
but, I receive error log as follow: Any one can help me!!

Setting pipeline to PAUSED ...
/GstPipeline:pipeline0/GstUDPSrc:udpsrc0.GstPad:src: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps = video/x-h264
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:sink: caps = application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = video/x-h264
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = video/x-h264
/GstPipeline:pipeline0/ffmux_mpegts:ffmux_mpegts0.GstPad:video_0: caps = video/x-h264
ERROR: from element /GstPipeline:pipeline0/ffmux_mpegts:ffmux_mpegts0: Could not configure supporting library.
Additional debug info:
gstffmpegmux.c(551): gst_ffmpegmux_collected (): /GstPipeline:pipeline0/ffmux_mpegts:ffmux_mpegts0:
Failed to write file header - check codec settings
Execution ended after 19881715 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
/GstPipeline:pipeline0/ffmux_mpegts:ffmux_mpegts0.GstPad:video_0: caps = NULL
/GstPipeline:pipeline0/ffmux_mpegts:ffmux_mpegts0.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstUDPSrc:udpsrc0.GstPad:src: caps = NULL
Setting pipeline to NULL ...
Freeing pipeline ...
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