NVENC 12.0 nvEncReconfigureEncoder always return NV_ENC_ERR_INVALID_VERSION

Gaming and Visualization Technologies Video Processing & Optical Flow
1

I want to change bitrate in NVENC but it always return NV_ENC_ERR_INVALID_VERSION error.

My codes as bellow,the current_init_params is the value which set in nvEncInitialzeEncode.The init phrase is OK and stream encoding is OK too.

NV_ENC_INITIALIZE_PARAMS init_params = current_init_params;
init_params.encodeConfig->rcParams.averageBitRate = client_requested_bitrate * 1000;
init_params.encodeConfig->rcParams.maxBitRate = client_requested_bitrate * 1000;
init_params.encodeConfig->rcParams.maxBitRate = client_requested_bitrate * 1000;
init_params.encodeConfig->rcParams.vbvBufferSize = 2 * (client_requested_bitrate * 1000) / frameRate;

NV_ENC_RECONFIGURE_PARAMS reconfigure_params { 0 };
reconfigure_params.version = NV_ENC_RECONFIGURE_PARAMS_VER;
reconfigure_params.reInitEncodeParams = init_params;
reconfigure_params.resetEncoder = 0;
reconfigure_params.forceIDR = 0;

if (nvenc_failed(nvenc->nvEncReconfigureEncoder(encoder, &reconfigure_params))) {
//log error here,always get here
}

and hareward is RTX 4070,driver version is 552.44 ,OS: WINDOWS 10(21H2)

and NVENC defins as bellow:

define NVENCAPI_MAJOR_VERSION 12
define NVENCAPI_MINOR_VERSION 0
define NV_ENC_RECONFIGURE_PARAMS_VER (NVENCAPI_STRUCT_VERSION(1) | ( 1u << 31 ))

2

Hi l.f.hwang
Can you to provide a complete repro application for us to make a quick progress on this?

Thanks.

3

We do not have a corresponding software repository, but the above code should be relatively easy to reproduce. The corresponding basic code can be found at: Sunshine/src/nvenc/nvenc_base.cpp at master · LizardByte/Sunshine · GitHub