I decided to compile and run NDILib_Recv example application of the SDK for the same scenario. It is also crashing in the ndir:audio function of libndi.so.

Interestingly, noticed that if I stream the data from VLC, I don't encounter any crash issue neither on SDK example code or my application (actually they are calling same functions according to sample application.. )

This means it is clear that there is a bug in libndi.so 6.1.1 version, when receiving NDI streaming data of "NDI HX Camera" Android application. The crash needs to be fixed by SDK linux developers.

Arda