Gstreamer suddenly shutdown not support seekeing

[Akrita]

Hi,
I am developing a DVR program on Nvidia Jetson TK1 with Ubuntu 14.04
i use  following command to save video frames in a MP4 file
 
gst-launch-1.0 v4l2src device="/dev/video0" !
"video/x-raw,width=640,height=480,format=(string)YUY2" ! videoconvert  !
omxh264enc ! matroskamux ! filesink location=test.mp4

but when i suddenly shutdown Jetson TK1, generating MP4 file not supporting
seeking .
how can handle this problem to enable seeking in suddenly shutdown.
Best Regards,
Akrita.  



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