Python 如何实现批量转换视频音频的采样率

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

#!/user/bin/env python
# coding=utf-8
"""
@project : csdn
@author  : 剑客阿良_ALiang
@file   : transfor_mp4_audio_sampling_rate.py
@ide    : PyCharm
@time   : 2021-11-24 13:48:08
"""
from ffmpy import FFmpeg
import os
 
 
def transfor(video_path: str, tmp_dir: str, result_dir: str):
    file_name = os.path.basename(video_path)
    base_name = file_name.split('.')[0]
    file_ext = file_name.split('.')[-1]
    ext = 'wav'
 
    audio_path = os.path.join(tmp_dir, '{}.{}'.format(base_name, ext))
    print('文件名:{}，提取音频'.format(audio_path))
    ff = FFmpeg(
        inputs={
            video_path: None}, outputs={
            audio_path: '-f {} -vn -ac 1 -ar 16000 -y'.format('wav')})
    print(ff.cmd)
    ff.run()
 
    if os.path.exists(audio_path) is False:
        return None
 
    video_tmp_path = os.path.join(
        tmp_dir, '{}_1.{}'.format(
            base_name, file_ext))
    ff_video = FFmpeg(inputs={video_path: None},
                      outputs={video_tmp_path: '-an'})
    print(ff_video.cmd)
    ff_video.run()
 
    result_video_path = os.path.join(result_dir, file_name)
    ff_fuse = FFmpeg(inputs={video_tmp_path: None, audio_path: None}, outputs={
        result_video_path: '-map 0:v -map 1:a -c:v copy -c:a aac -shortest'})
    print(ff_fuse.cmd)
    ff_fuse.run()
    return result_video_path
 
 
def handle(video_dir: str, tmp_dir: str, result_dir: str):
    if os.path.isdir(video_dir):
        for file in os.listdir(video_dir):
            try:
                result = transfor(
                    os.path.join(
                        video_dir,
                        file),
                    tmp_dir,
                    result_dir)
            except Exception as e:
                print(e)
                continue
            if result:
                print(result)
 
 
if __name__ == '__main__':
    handle(
        'C:/Users/huyi/Desktop/shipin',
        'C:/Users/huyi/Desktop/tmp',
        'C:/Users/huyi/Desktop/result')