问题描述
我正在尝试使用MoviePy将mp4视频转换为mp3音频。在下面的“ convertToMP3”函数中，我传入一个情节，该情节是具有“ title”属性的RSS条目对象。我已经下载了一个mp4视频，该视频共享情节标题，但文件名周围有一些引号。
from moviepy.editor import AudioFileClip,VideoFileClip
import os
import Feedparser
#Input: episode,an RSS entry object; cleanup (boolean),a flag indicating whether
or not the old video file should be deleted
#Output: None
#Creates an MP3 version of the video file and optionally deletes the video (cleanup)
def convertToMP3(self,episode,cleanup = False):
#Establish path to files
#Try absolute path with quotes
try:
path_to_files = os.path.abspath(self.dest)
video_title = ("\'%s.mp4\'" % episode.title)
video_dir = os.path.join(path_to_files,video_title)
video_version = VideoFileClip(video_dir)
except Exception as e:
print("ERROR: Absolute path with quotes doesn't work. %s" % e)
#Try absolute path without quotes
try:
path_to_files = os.path.abspath(self.dest)
video_title = ("%s.mp4" % episode.title)
video_dir = os.path.join(path_to_files,video_title)
video_version = VideoFileClip(video_dir)
except Exception as e:
print("ERROR: Absolute path without doesn't work. %s" % e)
#Try implicit path with quotes
try:
path_to_files = (self.dest)
video_title = ("\'%s.mp4\'" % episode.title)
video_dir = os.path.join(path_to_files,video_title)
video_version = VideoFileClip(video_dir)
except Exception as e:
print("ERROR: Implicit path with quotes doesn't work. %s" % e)
#Try implicit path without quotes
try:
path_to_files = (self.dest)
video_title = ("%s.mp4" % episode.title)
video_dir = os.path.join(path_to_files,video_title)
video_version = VideoFileClip(video_dir)
except Exception as e:
print("ERROR: Implicit path without quotes doesn't work. %s" % e)
try:
#Create MP3 version of episode
#video_dir = str(video_dir)
#Todo: Below line of code cannot find the video file
mp3_version = video_version.audio
mp3_version.write_audiofile(path_to_files / episode.title)
#Close the files
mp3_version.close()
video_version.close()
except Exception as e:
print("ERROR: File conversion Failed. %s" % e)
我遇到的问题是MoviePy找不到视频文件。如您所见，我同时使用了隐式路径和绝对路径，但均无效。我正在使用Python 3.8.2的Ubuntu 20.04计算机上运行，并且安装了所有可选的MoviePy依赖项。还有其他我想念的东西吗？
跟踪：
dLoader1b: Testing file conversion from MP4 to MP3
Traceback (most recent call last):
File "/usr/lib/python3.8/runpy.py",line 193,in _run_module_as_main
return _run_code(code,main_globals,None,File "/usr/lib/python3.8/runpy.py",line 86,in _run_code
exec(code,run_globals)
File "/home/caleb/.vscode/extensions/ms-python.python-2020.8.105369/pythonFiles/lib/python/debugpy/__main__.py",line 45,in <module>
cli.main()
File "/home/caleb/.vscode/extensions/ms-python.python-2020.8.105369/pythonFiles/lib/python/debugpy/../debugpy/server/cli.py",line 430,in main
run()
File "/home/caleb/.vscode/extensions/ms-python.python-2020.8.105369/pythonFiles/lib/python/debugpy/../debugpy/server/cli.py",line 267,in run_file
runpy.run_path(options.target,run_name=compat.force_str("__main__"))
File "/usr/lib/python3.8/runpy.py",line 263,in run_path
return _run_module_code(code,init_globals,run_name,line 96,in _run_module_code
_run_code(code,mod_globals,run_globals)
File "/home/caleb/Documents/Programming_Projects/podcast_DLoader/dLoader_tester.py",line 46,in <module>
dLoader1c.convertToMP3(latest_ep)
File "/home/caleb/Documents/Programming_Projects/podcast_DLoader/podcast_DLoader.py",line 128,in convertToMP3
video_version = VideoFileClip(video_dir)
File "/usr/local/lib/python3.8/dist-packages/moviepy/video/io/VideoFileClip.py",line 88,in __init__
self.reader = FFMPEG_VideoReader(filename,pix_fmt=pix_fmt,File "/usr/local/lib/python3.8/dist-packages/moviepy/video/io/ffmpeg_reader.py",line 35,in __init__
infos = ffmpeg_parse_infos(filename,print_infos,check_duration,line 270,in ffmpeg_parse_infos
raise IOError(("MoviePy error: the file %s Could not be found!\n"
OSError: MoviePy error: the file /home/caleb/Documents/Programming_Projects/podcast_DLoader/'NVIDIA CONFIRMS Your PSU Can't Handle RTX 3000 - WAN Show August 28,2020.mp4' Could not be found!
Please check that you entered the correct path.
编辑
def convertToMP3(self,cleanup = False):
path_to_files = (self.dest)
video_title = episode.title + ".mp4"
video_version = VideoFileClip(video_title)
try:
#Create MP3 version of episode
#video_dir = str(video_dir)
#Todo: Below line of code cannot find the video file
mp3_version = video_version.audio
mp3_version.write_audiofile(path_to_files / episode.title)
#Close the files
mp3_version.close()
video_version.close()
except Exception as e:
print("ERROR: File conversion Failed. %s" % e)
这仍然会产生相同的错误：
Traceback (most recent call last):
File "/usr/lib/python3.8/runpy.py",run_globals)
File "/home/caleb/.vscode/extensions/ms-python.python-2020.8.106424/pythonFiles/lib/python/debugpy/__main__.py",in <module>
cli.main()
File "/home/caleb/.vscode/extensions/ms-python.python-2020.8.106424/pythonFiles/lib/python/debugpy/../debugpy/server/cli.py",in main
run()
File "/home/caleb/.vscode/extensions/ms-python.python-2020.8.106424/pythonFiles/lib/python/debugpy/../debugpy/server/cli.py",line 49,line 156,in convertToMP3
video_version = VideoFileClip(video_title)
File "/usr/local/lib/python3.8/dist-packages/moviepy/video/io/VideoFileClip.py",in ffmpeg_parse_infos
raise IOError(("MoviePy error: the file %s Could not be found!\n"
OSError: MoviePy error: the file NVIDIA CONFIRMS Your PSU Can't Handle RTX 3000 - WAN Show August 28,2020.mp4 Could not be found!
Please check that you entered the correct path.
解决方法
最可能发生的是这一行：
video_title = ("\'%s.mp4\'" % episode.title)
生成的文件名如下：（假设path_to_files为/opt/moviedir，而episode.title为episode1）
`/opt/moviedir/'episode1.mp4'`
可能与预期的文件名不同：/opt/moviedir/episode1.mp4
编辑：
查看回溯轨迹并查看moviepy的来源之后，尤其是here（第244-272行），看起来文件名已通过参数传递给ffmpeg命令，并且filename不正确。因此，这绝对与我们如何形成文件名有关。
看起来，当前尝试形成video_title的方法是将单引号作为文件名的一部分，使其与不带单引号的预期文件名不同。
能否请您尝试将video_title =行更改为此：
video_title = episode.title + ".mp4"
因为看起来好像在没有设置subprocess.Popen的情况下将其传递给shell=True时，我们不需要对字符串进行显式转义（这是moviepy库传递的方式filename参数）。请参阅this了解更多信息。