You may create a new topic for this as it gets far from original title ;-)
For anyone getting here, here are some modified files from public_sources/nvsample_cuda_process:
nvsample_cudaprocess.cu (6.5 KB)
Makefile (5.0 KB)
This may still require some clean up work for avoiding some fault when closing…
gst-launch-1.0 nvarguscamerasrc num-buffers=300 ! nvivafilter customer-lib-name="libnvsample_cudaprocess.so" post-process=true ! 'video/x-raw(memory:NVMM),format=RGBA' ! nvvidconv ! nvoverlaysink