Analysis of video x264 coding

Declare the x264_param_t struct variable:

x264_param_t params;

X264_param_default_preset (&params, "ultrafast", "zerolatency"); //optimize encoding delay ?

Assign values before variable parameter encoding:

params. I_CSP = (CSP = = -) ? X264_CSP_NV12:CSP;//CSP with encoded bitstream, only supports i420, color space settings#ifdef square_and_rotateparams. I_width =W; params. I_height =h;#else    params. I_width =width; params. I_height =height;#endif    params. Vui.i_sar_width =1; params. Vui.i_sar_height =1;//Setting the aspect ratio    params. i_fps_num = Fpsnum;//Frame rate molecule    params. I_fps_den = Fpsden;//Frame rate Denominator    params. I_timebase_num =1; params. I_timebase_den = +;//Ms    params. I_keyint_max = fpsnum/Fpsden; params. i_keyint_min = Fpsnum/fpsden;//X264_keyint_min_auto    params. B_repeat_headers =0;//    params. B_annexb =0; params. B_deblocking_filter =1; params. rc.f_rf_constant = -; params. rc.i_bitrate = bitrate;

Initialize the encoder:

ENC = X264_encoder_open(&params);

Get the entire stream of PPS and SPS?? ：

int s = x264_encoder_headers(Enc, &nals, &nal_count);

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x264 Code:

Initialize picture information:

x264_picture_t Picin, Picout;
X264_picture_init (&picin);

Set the parameters of the picture information:

Picin.i_pts            = ts;picin.i_type            = x264_type_auto;picin.i_qpplus1        0; PICIN.IMG.I_CSP        )? X264_CSP_NV12:CSP; // Special hack for Android
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To encode a frame x264:

ret = X264_encoder_encode(Enc, &nals, &nnal, &picin, &picout);

Note: A summary is:

(1) Initialize and set x264_param_t

(2) Initialize and set x264_picture_t

(3) x264 code

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Reference:

X264 Multithreading Analysis

Http://blog.sina.com.cn/s/blog_4ae178ba01013yix.html

x264 Coding Example
http://blog.csdn.net/xyyangkun/article/details/7255372/

x264 encoding detailed text whole process

Http://www.cnblogs.com/chuncn/archive/2011/02/25/1459805.html

Analysis of video x264 coding