Kang Xin

Can you provide the output of `ldd /usr/local/lib/libVROmafPacking.so | grep trace` to make sure library linking is correct? Also you can try to add **-DUSE_TRACE=ON** in this [line](https://github.com/OpenVisualCloud/Immersive-Video-Sample/blob/master/src/external/build.sh#L31).

1. Change this [line](https://github.com/OpenVisualCloud/Immersive-Video-Sample/blob/master/src/CMakeLists.txt#L8) to `ON)`. 2. Change this [line](https://github.com/OpenVisualCloud/Immersive-Video-Sample/blob/master/src/external/build.sh#L25) to `cmake -DCMAKE_BUILD_TYPE=Release -DTARGET=server -DDE_FLAG=true -DUSE_SAFE_MEM_LIB=OFF -DENABLE_MSDK=OFF -DUSE_TRACE=ON ../..`. 3. Change this [line](https://github.com/OpenVisualCloud/Immersive-Video-Sample/blob/master/src/external/build.sh#L45) to `cmake -DCMAKE_BUILD_TYPE=Release -DTARGET=client -DUSE_TRACE=ON ../../`. 4....

This seems leads to a SVT-HEVC initialization issue, have you installed it correctly?

Hi @ForgetMe17 , can you provide the output of following command in the same environment that your error occurred? ```bash cat /proc/cpuinfo | grep 'cpu cores' | cut -d ':'...

Please notice that we only verified the solution using software and hardware listed in [OMAF-Sample/README.md](https://github.com/OpenVisualCloud/Immersive-Video-Sample/blob/master/OMAF-Sample/README.md#software-requirements). Sorry to say that computing resources is way too few and OS of server doesn't...

We provide 4K and 8K samples in the [test environment](https://github.com/OpenVisualCloud/Immersive-Video-Sample/tree/master/OMAF-Sample#test-environment-hardware). As you can see in the hardware part, both of them requires quite heavy workload(in your case occupies all cores...