Please try attached prebuilt library. It is verified by below command:
$ gst-launch-1.0 nvcamerasrc num-buffers=300 ! 'video/x-raw(memory:NVMM),width=1280,height=720,framerate=60/1,format=NV12' ! nvvidconv output-buffers=10 ! 'video/x-raw(memory:NVMM),width=1920,height=1080,framerate=60/1' ! omxh264enc bitrate=500000 control-rate=2 temporal-tradeoff=3 ! video/x-h264,stream-format=byte-stream ! fpsdisplaysink video-sink=fakesink sync=false -v
r28_2_1_libnvmmlite_video.zip (306 KB)