** (presien_acquisition:1): CRITICAL **: 00:41:25.809: gst_adapter_push: assertion 'GST_IS_BUFFER (buf)' failed

[wzho0776]

We have 2 containers running 2 gstreamer pipelines and 2 cameras. They  use
the same scrip to construct gst pipeline, only difference is input argument,
one is usb port 1 for cam1, the other is usb port 2 for cam2.. When i unplug
cam1, the gst pipeline1 returned error which is understandable. But
sometimes it also caused pipeline2 to fail. It's saying 
** (pipeline:1): CRITICAL **: 00:41:25.809: gst_adapter_push: assertion
'GST_IS_BUFFER (buf)' failed

Does anyone know what might cause this problem? our pipeline is like:


gst-launch-1.0 v4l2src name=v4l2src2.4 device=/dev/video1 io-mode=2
do-timestamp=true ! image/jpeg,width=2560,height=960,framerate=60/1 !
videorate name=videorate2.4 ! image/jpeg,framerate=8/1 ! nvjpegdec
name=nvjpegdec2.4 ! video/x-raw ! nvvidconv ! "video/x-raw(memory:NVMM)" !
tee name=t ! queue flush-on-eos=true silent=true ! nvvidconv !
video/x-raw,width=800,height=300,format=BGRx ! appsink name=appsink2.4
emit-signals=true max-buffers=1 drop=true t. ! queue flush-on-eos=true
silent=true ! videorate max-rate=8 ! nvvidconv top=0 bottom=960 left=0
right=1280 !
"video/x-raw(memory:NVMM),width=1280,height=960,pixel-aspect-ratio=1/1" !
nvv4l2h264enc name=nvv4l2h264enc2.4 control-rate=0 bitrate=450000
maxperf-enable=1 iframeinterval=10 insert-sps-pps=1 profile=4 preset-level=4
! h264parse name=parse2.4 config-interval=1 disable-passthrough=true !
splitmuxsink name=splitmuxsink2.4 location=./test.ts
max-size-time=10000000000 max-size-bytes=6000000 muxer=mpegtsmux -e




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