WC3_FRAME_FPS     246 libavformat/wc3movie.c     av_set_pts_info(st, 33, 1, WC3_FRAME_FPS);
WC3_FRAME_FPS     260 libavformat/wc3movie.c     av_set_pts_info(st, 33, 1, WC3_FRAME_FPS);