Hi,
It should work with tee plugin. Please try
gst-launch-1.0 v4l2src device=/dev/video1 ! nvvideoconvert ! video/x-raw(memory:NVMM),format=(string)NV12,framerate=(fraction)30/1 ! queue ! m.sink_0 nvstreammux name=m gpu-id=0 batch-size=1 nvbuf-memory-type=0 enable-padding=0 ! nvinfer name=pgie config-file-path=config_detector.txt batch-size=1 interval=1 ! queue ! nvmultistreamtiler ! tee name=t ! queue ! nvvideoconvert ! nvv4l2h264enc ! filesink location=videoout.mp4 t. ! queue ! nvvideoconvert ! video/x-raw ! filesink location=dump.yuv