2
當我使用x264 lib編碼yuv視頻流時,我無法設置sps參數num_units_in_tick(i_num_units_in_tick在結構中)。我初始化爲x264_param_t:x264 num_units_in_tick無法正確設置
x264_param_t* m_x264Param;
if(x264_param_default_preset(m_x264Param, "superfast", "zerolatency") < 0)
return -1;
x264_param_apply_fastfirstpass(m_x264Param);
/* Apply profile restrictions. */
//baseline
if(x264_param_apply_profile(m_x264Param, "baseline") < 0)
return -1;
的i_rc_method設置爲1。我設置它決定num_units_in_tick的參數,然後調用x264_encoder_open得到x264_t。
m_x264Param->i_timebase_den = 90000;
m_x264Param->i_timebase_num = 3000;
m_x264Param->i_fps_num = 60;
m_x264Param->i_fps_den = 2;
但是,num_units_in_tick仍爲1,和time_scale仍然60.我怎樣才能設置num_units_in_tick至3000,因此一幀中佔有3000時間戳單元。
+1這是一個棘手的話題。另外感興趣的可能是來自x264-devel的這個討論:http://mailman.videolan.org/pipermail/x264-devel/2005-September/000985.html – mevatron 2012-05-11 16:56:43