Forum Post: RE: How to set pic_init_qp_minus26 ?

Hi Ammon,

To set qp you need to use Index OMX_TI_IndexParamVideoDynamicParams and you can set the values as shown below.

OMX_VIDEO_CONFIG_DYNAMICPARAMS tDynParams;

OMX_INIT_PARAM (&tDynParams);

tDynParams.nPortIndex = OMX_VIDENC_OUTPUT_PORT;

eError = OMX_GetParameter (pHandle, OMX_TI_IndexParamVideoDynamicParams,
&tDynParams);

tDynParams.videoDynamicParams.h264EncDynamicParams.rateControlParams.rateControlParamsPreset = IH264_RATECONTROLPARAMS_USERDEFINED;
tDynParams.videoDynamicParams.h264EncDynamicParams.rateControlParams.qpI = x;
tDynParams.videoDynamicParams.h264EncDynamicParams.rateControlParams.qpP = y;

eError = OMX_SetParameter (pHandle, OMX_TI_IndexParamVideoDynamicParams,
&tDynParams);