Hi All,
I am filling AVCodecContext structure with below given parameters and
their values.
Please suggest this is the right combination of parameters and their
values to acheive Constant Bit Rate.
(*apContext)->bit_rate = 60000;
(*apContext)->profile = 0; /* New */
(*apContext)->pix_fmt = PIX_FMT_YUV420P;
(*apContext)->codec_id = CODEC_ID_H263P;
/* New */
(*apContext)->codec_type = CODEC_TYPE_VIDEO;
(*apContext)->width = 352;
(*apContext)->height = 288;
(*apContext)->time_base.den = 10;
(*apContext)->time_base.num = 1;
(*apContext)->gop_size = 100;
/* zero for h263 */
(*apContext)->mpeg_quant = 0;
//(*apContext)->flags|=CODEC_FLAG_INPUT_PRESERVED;
(*apContext)->flags|=CODEC_FLAG_PASS1;
(*apContext)->flags|=CODEC_FLAG_NORMALIZE_AQP;// // 1
(*apContext)->flags&=~CODEC_FLAG_H263P_UMV;
(*apContext)->flags&=~CODEC_FLAG_4MV;
(*apContext)->rc_qsquish = 0;
(*apContext)->rc_eq = "tex^qComp";//"mv";
(*apContext)->qmin = 3;
(*apContext)->trellis = 1;
//(*apContext)->qmax = 15;
(*apContext)->me_cmp = 3;
(*apContext)->me_sub_cmp = 3;
(*apContext)->rc_min_rate = 60000;
(*apContext)->rc_max_rate = 60000;
(*apContext)->rc_buffer_size = 60000;
//(*apContext)->i_quant_factor = (float)-0.6;
/* qscale offset between P and I-frames */
//(*apContext)->i_quant_offset = (float)0.0;
/* Macro Block mb */
(*apContext)->mb_decision = FF_MB_DECISION_RD;
(*apContext)->me_subpel_quality = 8;
/* motion estimation me*/
(*apContext)->me_method =
/*ME_FULL;/*ME_ZERO*/ME_EPZS;
(*apContext)->me_range = 0;
(*apContext)->scenechange_threshold = 100000000;
avcodec_open (*apContext, apCodec);
Thanks in Advance
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