WC3_FRAME_FPS     172 libavformat/wc3movie.c     avpriv_set_pts_info(st, 33, 1, WC3_FRAME_FPS);
WC3_FRAME_FPS     183 libavformat/wc3movie.c     avpriv_set_pts_info(st, 33, 1, WC3_FRAME_FPS);