Thanks, I thought nnstreamer-openvino support is for openvino version 2019. In truth, I work with rapsberry 4 - ubuntu server (aarch64). Nnstreamer works slowly but well. At first I thought the problem was to use parse_launch in the c++ example. I know from experience that this is quite inefficient (for arm) and I use a dynamic pipeline. I used intel NCS2 from before and so I think it will be faster to use it.

Am I correct that I should uninstall the package installed from the repository and use the source from github? Here I got stuck that cmake didn't find me an openVINO installation. I thought it was caused by another version of openVINO.