About bitrate of H.264 stream.

Hi,

Can you please ensure you are using version 2.0 of the IPNC version.

We had this issue when  you change the framerate from 30 to 15 the bitrate is halved in version 1.9, but this has been fixed in v2.0.

Please let us know the parameter you had set.

Regards,

Raghu

Hi Raghu：

                   Thanks your reply at first！

                   I am sure that We are using version 2.0 of the IPNC version.

                   In my application, I had modify av_server to capture 5M(2448x2048) YUV picture in ISIF, and then to resize , encode to1080P H.264, setting parameters is:

gAVSERVER_UI_config.ldcEnable = FALSE;
gAVSERVER_UI_config.vsEnable = FALSE;
gAVSERVER_UI_config.snfEnable = FALSE;
gAVSERVER_UI_config.tnfEnable = FALSE;

config->sensorMode = DRV_IMGS_SENSOR_MODE_2448x2048;
config->sensorFps = 15;

config->vstabTskEnable = gAVSERVER_UI_config.vsEnable;
config->ldcTskEnable = gAVSERVER_UI_config.ldcEnable;
config->vnfTskEnable = gAVSERVER_UI_config.snfEnable|gAVSERVER_UI_config.tnfEnable;
config->encryptTskEnable = FALSE;

config->captureRawInMode = AVSERVER_CAPTURE_RAW_IN_MODE_DDR_IN;
config->captureSingleResize = FALSE;
config->captureYuvFormat = DRV_DATA_FORMAT_YUV420;

config->numCaptureStream = 3;

if(numEncodes > config->numCaptureStream)
       numEncodes = config->numCaptureStream;

config->numEncodeStream = numEncodes;

config->faceDetectConfig.captureStreamId = 0;
config->faceDetectConfig.fdEnable = gAVSERVER_UI_config.fdEnable;

config->displayConfig.captureStreamId = 1;
config->displayConfig.width = 640;
config->displayConfig.height = 480;
config->displayConfig.expandH = TRUE;

config->audioConfig.captureEnable = FALSE;
config->audioConfig.samplingRate = 8000;
config->audioConfig.codecType = ALG_AUD_CODEC_G711;
config->audioConfig.fileSaveEnable = FALSE;

i=0;

k=0;
config->captureConfig[i].width = 1920;
config->captureConfig[i].height = 1080;
config->captureConfig[i].ldcEnable = gAVSERVER_UI_config.ldcEnable;
config->captureConfig[i].snfEnable = gAVSERVER_UI_config.snfEnable;
config->captureConfig[i].tnfEnable = gAVSERVER_UI_config.tnfEnable;
config->captureConfig[i].vsEnable = config->vstabTskEnable;

if(numEncodes>0)
     config->captureConfig[i].numEncodes = 1;

config->captureConfig[i].encodeStreamId[k++]= 0;
config->captureConfig[i].frameSkipMask = 0xFFFFFFFF;
i++;

k=0;
config->captureConfig[i].width = JAI_IMAGE_WIDTH;
config->captureConfig[i].height = JAI_IMAGE_HEIGHT;
config->captureConfig[i].ldcEnable = gAVSERVER_UI_config.ldcEnable;
config->captureConfig[i].snfEnable = gAVSERVER_UI_config.snfEnable;
config->captureConfig[i].tnfEnable = gAVSERVER_UI_config.tnfEnable;
config->captureConfig[i].vsEnable = config->vstabTskEnable;

if(numEncodes>2)
config->captureConfig[i].numEncodes = 1;

config->captureConfig[i].encodeStreamId[k++]= 2;
config->captureConfig[i].frameSkipMask = 0xFFFFFFFF;
i++;

k=0;
config->captureConfig[i].width = 352;
config->captureConfig[i].height = 288;
config->captureConfig[i].ldcEnable = gAVSERVER_UI_config.ldcEnable;
config->captureConfig[i].snfEnable = gAVSERVER_UI_config.snfEnable;
config->captureConfig[i].tnfEnable = gAVSERVER_UI_config.tnfEnable;
config->captureConfig[i].vsEnable = config->vstabTskEnable;

if(numEncodes>1)
config->captureConfig[i].numEncodes = 1;

config->captureConfig[i].encodeStreamId[k++]= 1;
config->captureConfig[i].frameSkipMask = 0xFFFFFFFF;
i++;

i=0;
config->encodeConfig[i].captureStreamId = 0;
config->encodeConfig[i].cropWidth = ALIGN_ENCODE(1920);
config->encodeConfig[i].cropHeight = ALIGN_ENCODE(1080);
config->encodeConfig[i].frameRateBase = 15000;
config->encodeConfig[i].frameSkipMask = 0xFFFFFFFF;
config->encodeConfig[i].codecType = gAVSERVER_UI_config.codecType[i];
config->encodeConfig[i].codecBitrate = gAVSERVER_UI_config.codecBitrate[i];
config->encodeConfig[i].encryptEnable = FALSE;
config->encodeConfig[i].fileSaveEnable = FALSE;
config->encodeConfig[i].motionVectorOutputEnable = FALSE;
config->encodeConfig[i].qValue = gAVSERVER_UI_config.codecBitrate[i];
i++;

config->encodeConfig[i].captureStreamId = 2;
config->encodeConfig[i].cropWidth = ALIGN_ENCODE(352);
config->encodeConfig[i].cropHeight = ALIGN_ENCODE(288);
config->encodeConfig[i].frameRateBase = 15000;
config->encodeConfig[i].frameSkipMask = 0xFFFFFFFF;
config->encodeConfig[i].codecType = gAVSERVER_UI_config.codecType[i];
config->encodeConfig[i].codecBitrate = gAVSERVER_UI_config.codecBitrate[i];
config->encodeConfig[i].encryptEnable = FALSE;
config->encodeConfig[i].fileSaveEnable = FALSE;
config->encodeConfig[i].motionVectorOutputEnable = FALSE;
config->encodeConfig[i].qValue = gAVSERVER_UI_config.codecBitrate[i];
i++;

config->encodeConfig[i].captureStreamId = 1;
config->encodeConfig[i].cropWidth = ALIGN_ENCODE(JAI_IMAGE_WIDTH);
config->encodeConfig[i].cropHeight = ALIGN_ENCODE(JAI_IMAGE_HEIGHT);
config->encodeConfig[i].frameRateBase = 5000;
config->encodeConfig[i].frameSkipMask = 0xFFFFFFFF;
config->encodeConfig[i].codecType = gAVSERVER_UI_config.codecType[i];
config->encodeConfig[i].codecBitrate = gAVSERVER_UI_config.codecBitrate[i];
config->encodeConfig[i].encryptEnable = FALSE;
config->encodeConfig[i].fileSaveEnable = FALSE;
config->encodeConfig[i].motionVectorOutputEnable = FALSE;
config->encodeConfig[i].qValue = gAVSERVER_UI_config.codecBitrate[i];
i++;

break;

Thanks you very much.