python从视频中导出音频

pip install ffmpeg

pip install moviepy

(wind_2021) L:\>
(wind_2021) L:\>
(wind_2021) L:\>pip install ffmpeg
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting ffmpeg
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/f0/cc/3b7408b8ecf7c1d20ad480c3eaed7619857bf1054b690226e906fdf14258/ffmpeg-1.4.tar.gz (5.1 kB)
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: ffmpeg
  Building wheel for ffmpeg (setup.py) ... done
  Created wheel for ffmpeg: filename=ffmpeg-1.4-py3-none-any.whl size=6083 sha256=593b32b67243b003503c4c51af80cdead7bccc83fc75b020ea94bfe4200f0927
  Stored in directory: c:\users\luo\appdata\local\pip\cache\wheels\81\12\64\7484404a25365c98fbeb12c05477bb30dbc06a8682d0d8f2d6
Successfully built ffmpeg
Installing collected packages: ffmpeg
Successfully installed ffmpeg-1.4

(wind_2021) L:\>
(wind_2021) L:\>
(wind_2021) L:\>
(wind_2021) L:\>pip install moviepy
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting moviepy
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/18/54/01a8c4e35c75ca9724d19a7e4de9dc23f0ceb8769102c7de056113af61c3/moviepy-1.0.3.tar.gz (388 kB)
     ---------------------------------------- 388.3/388.3 kB 4.8 MB/s eta 0:00:00
  Preparing metadata (setup.py) ... done
Collecting decorator<5.0,>=4.0.2 (from moviepy)
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/ed/1b/72a1821152d07cf1d8b6fce298aeb06a7eb90f4d6d41acec9861e7cc6df0/decorator-4.4.2-py2.py3-none-any.whl (9.2 kB)
Requirement already satisfied: tqdm<5.0,>=4.11.2 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from moviepy) (4.64.0)
Requirement already satisfied: requests<3.0,>=2.8.1 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from moviepy) (2.26.0)
Collecting proglog<=1.0.0 (from moviepy)
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/8b/f5/cab5cf6a540c31f5099043de0ae43990fd9cf66f75ecb5e9f254a4e4d4ee/proglog-0.1.10-py3-none-any.whl (6.1 kB)
Requirement already satisfied: numpy>=1.17.3 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from moviepy) (1.21.3)
Collecting imageio<3.0,>=2.5 (from moviepy)
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/e9/67/98ed2279fcd66cc50112abb8f5a3de4526307dc43a16d220d7b48afd113a/imageio-2.28.1-py3-none-any.whl (3.4 MB)
     ---------------------------------------- 3.4/3.4 MB 5.7 MB/s eta 0:00:00
Collecting imageio_ffmpeg>=0.2.0 (from moviepy)
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/7f/1d/9d9bb0beef06704cb3acb7cab8673b451d4528ee6cc9b231d1284aa1ed75/imageio_ffmpeg-0.4.8-py3-none-win_amd64.whl (22.6 MB)
     ---------------------------------------- 22.6/22.6 MB 5.8 MB/s eta 0:00:00
Requirement already satisfied: pillow>=8.3.2 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from imageio<3.0,>=2.5->moviepy) (8.4.0)
Requirement already satisfied: urllib3<1.27,>=1.21.1 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from requests<3.0,>=2.8.1->moviepy) (1.26.7)
Requirement already satisfied: certifi>=2017.4.17 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from requests<3.0,>=2.8.1->moviepy) (2021.10.8)
Requirement already satisfied: charset-normalizer~=2.0.0 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from requests<3.0,>=2.8.1->moviepy) (2.0.7)
Requirement already satisfied: idna<4,>=2.5 in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from requests<3.0,>=2.8.1->moviepy) (3.3)
Requirement already satisfied: colorama in l:\anaconda_2021\install\envs\wind_2021\lib\site-packages (from tqdm<5.0,>=4.11.2->moviepy) (0.4.4)
Building wheels for collected packages: moviepy
  Building wheel for moviepy (setup.py) ... done
  Created wheel for moviepy: filename=moviepy-1.0.3-py3-none-any.whl size=110744 sha256=014b5cdb2e0d2289de98aaa0f2e50da061251c7496d24c388946ca56a73bdd48
  Stored in directory: c:\users\luo\appdata\local\pip\cache\wheels\19\c5\56\7bd7ec94257958e82bbcf8d4eb85a5acfae1b5eb3f4f64128a
Successfully built moviepy
Installing collected packages: imageio_ffmpeg, imageio, decorator, proglog, moviepy
  Attempting uninstall: decorator
    Found existing installation: decorator 5.1.1
    Uninstalling decorator-5.1.1:
      Successfully uninstalled decorator-5.1.1
Successfully installed decorator-4.4.2 imageio-2.28.1 imageio_ffmpeg-0.4.8 moviepy-1.0.3 proglog-0.1.10

(wind_2021) L:\>

import moviepy.editor as mp
def extract_audio(videos_file_path):
    my_clip = mp.VideoFileClip(videos_file_path)
    return my_clip

file_path = r"202305221404.mp4"
my_clip = extract_audio(file_path)
my_clip.audio.write_audiofile(f'202305221404.mp3')

参考：https://blog.csdn.net/ZXYbbb/article/details/125669205

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