Ffmpeg with CUDA acceleration


I have this jetson nano:
NVIDIA Jetson Nano (Developer Kit Version)
L4T 32.5.1 [ JetPack 4.5.1 ]
Ubuntu 18.04.5 LTS
Kernel Version: 4.9.201-tegra
CUDA 10.2.89
CUDA Architecture: 5.3
OpenCV version: 4.1.1
OpenCV Cuda: NO
Vision Works:
VPI: ii libnvvpi1 1.0.15 arm64 NVIDIA Vision Programming Interface library
Vulcan: 1.2.70

I want to build a ffmpeg with CUDA support similar to this website . However, if I try to encode a video using h264_nvenc, it seems to be missing the library libnvidia-encode.so.1. So far, I was only able to install a stub for this library from the Video SDK, but this is only for development but not actual encoding. I am a bit lost between JetPacks, F4T, SDKs etc and spend several hours searching.

Could someone tell me how to get the actual version of this library for my nano?

Kind regards,