ffmpeg/tests/ref/fate/ffmpeg-lavfi

   1 #tb 0: 1/5
   2 0,          0,          0,        1,   115200, 0x375ec573
   3 0,          1,          1,        1,   115200, 0x375ec573
   4 0,          2,          2,        1,   115200, 0x375ec573
   5 0,          3,          3,        1,   115200, 0x375ec573
   6 0,          4,          4,        1,   115200, 0x375ec573