INSERT_FILT      2016 ffplay.c           INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
INSERT_FILT      2022 ffplay.c                       INSERT_FILT("transpose", "clock");
INSERT_FILT      2024 ffplay.c                       INSERT_FILT("hflip", NULL);
INSERT_FILT      2025 ffplay.c                       INSERT_FILT("vflip", NULL);
INSERT_FILT      2027 ffplay.c                       INSERT_FILT("transpose", "cclock");
INSERT_FILT      2031 ffplay.c                       INSERT_FILT("rotate", rotate_buf);