Getting "OSError: [WinError 6] The handle is invalid" in VideoFileClip function

Question

I am creating a program using python by importing moviepy library, but getting following error:

from moviepy.editor import VideoFileClip

white_output = 'videos/testVideo.mp4'
clip1 = VideoFileClip("videos/testVideo.mp4")

OSError                                   Traceback (most recent call last)
<ipython-input-40-f49638833528> in <module>()
      1 white_output = 'videos/testVideo.mp4'
----> 2 clip1 = VideoFileClip("videos/testVideo.mp4")
      3 white_clip = clip1.fl_image(process_image) #NOTE: this function expects color images!!
      4 get_ipython().magic('time white_clip.write_videofile(white_output, audio=False)')

C:\Users\hp pc\Anaconda3\envs\lib\site-packages\moviepy\video\io\VideoFileClip.py in __init__(self, filename, has_mask, audio, audio_buffersize, audio_fps, audio_nbytes, verbose)
     53         # Make a reader
     54         pix_fmt= "rgba" if has_mask else "rgb24"
---> 55         reader = FFMPEG_VideoReader(filename, pix_fmt=pix_fmt)
     56         self.reader = reader
     57         # Make some of the reader's attributes accessible from the clip

C:\Users\hp pc\Anaconda3\envs\lib\site-packages\moviepy\video\io\ffmpeg_reader.py in __init__(self, filename, print_infos, bufsize, pix_fmt, check_duration)
     30 
     31         self.filename = filename
---> 32         infos = ffmpeg_parse_infos(filename, print_infos, check_duration)
     33         self.fps = infos['video_fps']
     34         self.size = infos['video_size']

C:\Users\hp pc\Anaconda3\envs\lib\site-packages\moviepy\video\io\ffmpeg_reader.py in ffmpeg_parse_infos(filename, print_infos, check_duration)
    236         popen_params["creationflags"] = 0x08000000
    237 
--> 238     proc = sp.Popen(cmd, **popen_params)
    239 
    240     proc.stdout.readline()

C:\Users\hp pc\Anaconda3\envs\lib\subprocess.py in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds)
    840                  pass_fds=()):
    841         """Create new Popen instance."""
--> 842         _cleanup()
    843         # Held while anything is calling waitpid before returncode has been
    844         # updated to prevent clobbering returncode if wait() or poll() are

C:\Users\hp pc\Anaconda3\envs\lib\subprocess.py in _cleanup()
    503 def _cleanup():
    504     for inst in _active[:]:
--> 505         res = inst._internal_poll(_deadstate=sys.maxsize)
    506         if res is not None:
    507             try:

C:\Users\hp pc\Anaconda3\envs\lib\subprocess.py in _internal_poll(self, _deadstate, _WaitForSingleObject, _WAIT_OBJECT_0, _GetExitCodeProcess)
   1257             """
   1258             if self.returncode is None:
-> 1259                 if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
   1260                     self.returncode = _GetExitCodeProcess(self._handle)
   1261             return self.returncode

OSError: [WinError 6] The handle is invalid

Please let me know a workaround.

Answer 1

I solved the issue by running the following commands after reading the video.

video_clip.reader.close()
video_clip.audio.reader.close_proc()

See https://github.com/Zulko/moviepy/issues/73 and https://github.com/Zulko/moviepy/issues/164.