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Yoji,

Can you specify the full encoder parameters, can you also send the i/p and o/p file. Looks like your test sequence comprise of Noise and black data.

regards

Yashwant

Hi Yashwant，

Thank you for a reply.
I understood it.
I try it.
Best regards.

Hi Yashwant,

I changed parameters.The parameters are as follows.

//#define ENC_LINK_DEFAULT_ALGPARAMS_RATECONTROLPRESET (IVIDEO_STORAGE)

#define ENC_LINK_DEFAULT_ALGPARAMS_RATECONTROLPRESET (IVIDEO_USER_DEFINED) // for change rcAlgo

//#define ENC_LINK_DEFAULT_ALGPARAMS_TARGETBITRATE (2 * 1000 * 1000)

#define ENC_LINK_DEFAULT_ALGPARAMS_TARGETBITRATE (200 * 1000) // 200kbps

//#define ENC_LINK_DEFAULT_ALGPARAMS_MAXBITRATE (-1)

#define ENC_LINK_DEFAULT_ALGPARAMS_MAXBITRATE (200 * 1000) // 200kbps but ignored

//params->rateControlParams.rateControlParamsPreset = IH264_RATECONTROL_PARAMS_DEFAULT;

params->rateControlParams.rateControlParamsPreset = IH264_RATECONTROL_PARAMS_USERDEFINED;

params->rateControlParams.rcAlgo = IH264_RATECONTROL_DEFAULT;

params->rateControlParams.rcAlgo = IH264_RATECONTROL_PRC_LOW_DELAY;

But it worked only as VBR.

I'll try more.

Best Regards.

YOJI YASUDA

params->rateControlParams.rcAlgo = IH264_RATECONTROL_DEFAULT;

params->rateControlParams.rcAlgo = IH264_RATECONTROL_PRC_LOW_DELAY;

Not sure about 'IH264_RATECONTROL_DEFAULT'  and 'IH264_RATECONTROL_PRC_LOW_DELAY' values .  To enable CBR rate control you need to set params->rateControlParams.rcAlgo = 0.

Please note that if you want enable Perceptual RC you need set it in dynamic param. And it is valid only for encQuality 0 and 1.

Thanks,

Veeranna

Hi Veeranna,

Thank you for a reply.

It is not yet solved.

I set

　params->rateControlParams.rcAlgo = 0.

But it works as VBR.

I think

　VENC_RATE_CTRL_VBR=0,

　VENC_RATE_CTRL_CBR=1.

It was written in "ti_venc.h".

I'll try more in detail.

Best Regards
Yoji