startframe	starttime	endframe	endtime
0	0	49	1.96
50	2	778	31.12
779	31.16	1191	47.64
1192	47.68	1266	50.64
1267	50.68	1999	79.96
2000	80	2726	109.04
2727	109.08	3451	138.04
3452	138.08	4179	167.16
4180	167.2	4812	192.48
4813	192.52	4860	194.4