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61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
4 years ago
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#!/usr/local/bin/python3
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import subprocess
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# 调整音频播放速率
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def a_speed(input_file, speed, out_file):
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try:
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cmd = "ffmpeg -y -i %s -filter_complex \"atempo=tempo=%s\" %s" % (input_file, speed, out_file)
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res = subprocess.call(cmd, shell=True)
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if res != 0:
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return False
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return True
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except Exception:
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return False
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# 音频截取 str_second 开始时间秒数 intercept 截取长度秒。从开始时间截取多少秒的音频
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def a_intercept(input_file, str_second, duration, out_file):
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try:
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cmd = "ffmpeg -y -i %s -ss %s -t %s %s" % (input_file, str_second, duration, out_file)
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res = subprocess.call(cmd, shell=True)
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if res != 0:
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return False
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return True
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except Exception:
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return False
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# 音频拼接 input_file_list = ["1.mp3", "2.mp3"]
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def a_split(input_file_list, out_file):
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try:
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if len(input_file_list) < 2:
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return False
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split_str = "|"
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a_list = split_str.join(input_file_list)
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cmd= "ffmpeg -y -i \"concot:%s\" %s" % (a_list, out_file)
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res = subprocess.call(cmd, shell=True)
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if res != 0:
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return False
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return True
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except Exception:
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return False
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# 调整音量大小
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def a_volume(input_file, volume, out_file):
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try:
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cmd = "ffmpeg -y -i %s -af volume=%s %s" % (input_file, volume, out_file)
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res = subprocess.call(cmd, shell=True)
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if res != 0:
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return False
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return True
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except Exception:
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return False
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