x264编码参数设置

来源：互联网发布：网络电视要多少带宽编辑：程序博客网时间：2024/06/06 02:34
H264Encoder *pEn = (H264Encoder *)    AllocBuffer(sizeof(H264Encoder));pEn->param       = (x264_param_t *)   AllocBuffer(sizeof(x264_param_t));x264_param_default(pEn->param);//set default param/*设置profile属性*///x264_profile_names数组定义如下：static const char * const x264_profile_names[] = //{ "baseline", "main", "high", "high10", "high422", "high444", 0 };x264_param_apply_profile(pEn->param,x264_profile_names[0]);pEn->param->i_csp                = X264_CSP_I420;// 设置帧数据格式为420pEn->param->i_width = m_nPicW; // 设置帧宽度pEn->param->i_height = m_nPicH; // 设置帧高度pEn->param->rc.i_lookahead = 0;            pEn->param->i_fps_num = m_nFps;       // 设置帧率（分子）pEn->param->i_fps_den = 1;            // 设置帧率时间1s（分母）pEn->param->rc.i_bitrate     = m_nBitrate;   // 设置码率pEn->param->rc.i_vbv_max_bitrate = pCodecParam->encoder.iMaxBitrate; // 设置平均码率模式下，最大瞬时码率pEn->param->i_keyint_max         = m_nFps * 2;   // 设置GOP最大长度pEn->param->i_keyint_min         = m_nFps * 2;   // 设置GOP最小长度pEn->param->pf_log = x264_log;                 // 设置打印日志回调pEn->param->p_log_private = NULL;pEn->param->i_log_level = X264_LOG_WARNING;pEn->param->b_vfr_input = 0;                     // 1:使用timebase和时间戳做码率控制 0：只使用fps做码率控制pEn->param->i_timebase_num = 1;                  // timebase（分子）pEn->param->i_timebase_den = 1000;               // timebase（分母）pEn->param->b_repeat_headers = 0;                // 1:在每个关键帧前面放sps和ppspEn->param->i_threads = 1;                       // 并行编码多个帧线程数pEn->param->rc.i_rc_method       = X264_RC_ABR;  // 码率控制方法，CQP(恒定质量)，CRF(恒定码率)，ABR(平均码率)pEn->param->rc.i_vbv_buffer_size = pCodecParam->encoder.iMaxBitrate; //码率控制缓冲区的大小，单位kbit，默认0pEn->handle = x264_encoder_open(pEn->param);     // 创建一个新的编码器句柄
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