ff_pre_estimate_p_frame_motion  860 libavcodec/mpegvideo.h int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
ff_pre_estimate_p_frame_motion 2601 libavcodec/mpegvideo_enc.c             ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);