duration = {
    '1_0.mp4': [4.77, 0],
    '1_1.mp4': [9.24, 4.77],
    '2_0.mp4': [19.02, 14.01],
    '2_yes.mp4': [17.51, 33.03],
    '2_no.mp4': [7.31, 50.540000000000006],
    '3_0.mp4': [16.27, 57.85000000000001],
    '4_no.mp4': [7.7, 74.12],
    '4_yes.mp4': [6.4, 81.82000000000001],
    '5_0.mp4': [2.23, 88.22000000000001],
    'gift_1.mp4': [14.6, 90.45000000000002],
    'gift_2.mp4': [14.6, 105.05000000000001],
    'gift_3.mp4': [14.6, 119.65],
    'gift_4.mp4': [14.6, 134.25],
    'gift_5.mp4': [14.6, 148.85],
    'gift_6.mp4': [14.6, 163.45]
}