目的： 音视频设置音量
# coding=utf-8
'''
Author: xuxiaosa
Created_Date: 2022/5/24
Created_Time: 12:43
'''
'''
原始音量对应关系
{0: -65.25, 1: -56.99, 2: -51.67, 3: -47.74, 4: -44.62, 5: -42.03,
6: -39.82, 7: -37.89, 8: -36.17, 9: -34.63, 10: -33.24,
11: -31.96, 12: -30.78, 13: -29.68, 14: -28.66,
15: -27.7, 16: -26.8, 17: -25.95, 18: -25.15, 19: -24.38, 20: -23.65,
21: -22.96, 22: -22.3, 23: -21.66,
24: -21.05, 25: -20.46, 26: -19.9,
27: -19.35, 28: -18.82, 29: -18.32, 30: -17.82,
31: -17.35, 32: -16.88, 33: -16.44,
34: -16.0, 35: -15.58, 36: -15.16,
37: -14.76, 38: -14.37, 39: -13.99, 40: -13.62,
41: -13.26, 42: -12.9, 43: -12.56,
44: -12.22, 45: -11.89, 46: -11.56,
47: -11.24, 48: -10.93, 49: -10.63, 50: -10.33,
51: -10.04, 52: -9.75, 53: -9.47,
54: -9.19, 55: -8.92, 56: -8.65,
57: -8.39, 58: -8.13, 59: -7.88, 60: -7.63,
61: -7.38, 62: -7.14, 63: -6.9,
64: -6.67, 65: -6.44, 66: -6.21,
67: -5.99, 68: -5.76, 69: -5.55, 
