Python常用工具之音频调整音量

pip install ffmpy -i https://pypi.douban.com/simple

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2021/11/24 22:45
# @Author  : 剑客阿良_ALiang
# @Site    : 
# @File    : raise_audio_volume_tool.py
 
import os
import uuid
from ffmpy import FFmpeg
 
 
# 通过倍率提升
def raise_by_ratio(audio_path: str, output_dir: str, ratio):
    ext = os.path.basename(audio_path).strip().split('.')[-1]
    if ext not in ['wav', 'mp3']:
        raise Exception('format error')
    ff = FFmpeg(
        inputs={
            '{}'.format(audio_path): None}, outputs={
            os.path.join(
                output_dir, '{}.{}'.format(
                    uuid.uuid4(), ext)): '-filter:a "volume={}"'.format(ratio)})
    print(ff.cmd)
    ff.run()
    return os.path.join(output_dir, '{}.{}'.format(uuid.uuid4(), ext))
 
 
# 通过分贝数提升
def raise_by_decibel(audio_path: str, output_dir: str, decibel):
    ext = os.path.basename(audio_path).strip().split('.')[-1]
    if ext not in ['wav', 'mp3']:
        raise Exception('format error')
    ff = FFmpeg(
        inputs={
            '{}'.format(audio_path): None}, outputs={
            os.path.join(
                output_dir, '{}.{}'.format(
                    uuid.uuid4(), ext)): '-filter:a "volume={}dB"'.format(decibel)})
    print(ff.cmd)
    ff.run()
    return os.path.join(output_dir, '{}.{}'.format(uuid.uuid4(), ext))

ffmpeg -i C:\Users\yi\Desktop\660952057553105332.wav -filter_complex volumedetect -c:v copy -f null C:\Users\yi\Desktop\1.txt

if __name__ == '__main__':
    print(
        raise_by_ratio(
            'C:\\Users\\yi\\Desktop\\660952057553105332.wav',
            'C:\\Users\\yi\\Desktop\\', 2))
    print(
        raise_by_decibel(
            'C:\\Users\\yi\\Desktop\\660952057553105332.wav',
            'C:\\Users\\yi\\Desktop\\', -10))