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| #!/usr/local/bin/python3 | |
| import subprocess | |
| # 调整音频播放速率 | |
| def a_speed(input_file, speed, out_file): | |
| try: | |
| cmd = "ffmpeg -y -i %s -filter_complex \"atempo=tempo=%s\" %s" % (input_file, speed, out_file) | |
| res = subprocess.call(cmd, shell=True) | |
| if res != 0: | |
| return False | |
| return True | |
| except Exception: | |
| return False | |
| # 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 | |
| def a_intercept(input_file, str_second, duration, out_file): | |
| try: | |
| cmd = "ffmpeg -y -i %s -ss %s -t %s %s" % (input_file, str_second, duration, out_file) | |
| res = subprocess.call(cmd, shell=True) | |
| if res != 0: | |
| return False | |
| return True | |
| except Exception: | |
| return False | |
| # 音频拼接 input_file_list = ["1.mp3", "2.mp3"] | |
| def a_split(input_file_list, out_file): | |
| try: | |
| if len(input_file_list) < 2: | |
| return False | |
| split_str = "|" | |
| a_list = split_str.join(input_file_list) | |
| cmd= "ffmpeg -y -i \"concot:%s\" %s" % (a_list, out_file) | |
| res = subprocess.call(cmd, shell=True) | |
| if res != 0: | |
| return False | |
| return True | |
| except Exception: | |
| return False | |
| # 调整音量大小 | |
| def a_volume(input_file, volume, out_file): | |
| try: | |
| cmd = "ffmpeg -y -i %s -af volume=%s %s" % (input_file, volume, out_file) | |
| res = subprocess.call(cmd, shell=True) | |
| if res != 0: | |
| return False | |
| return True | |
| except Exception: | |
| return False | |