ffmpeg/tests/ref/fate/filter-curves

   1 #tb 0: 1001/30000
   2 0,          0,          0,        1,   921600, 0xcf426780
   3 0,          1,          1,        1,   921600, 0x7642892d
   4 0,          2,          2,        1,   921600, 0x13c1ab7e
   5 0,          3,          3,        1,   921600, 0x3eca04bf
   6 0,          4,          4,        1,   921600, 0x61539162