[Python] Broken Pipe Error On Moviepy When Receiving a SIGINT OR SIGTERM

I'm trying to write a video with moviepy on a temp dir.

Here's a sample code:

video_file_name = '{}/{}'.format(tempfile.mkdtemp(), 'somefile.mp4')
clip.write_videofile(video_file_name, audio = False, threads =4,logger = None)


This works perfectly fine. However In my app context I want to be able to catch SIGTERM or SIGINT signals and wait until this write finishes before actually killing the app.

I do it this way:

signal.signal(signal.SIGINT, self.exit_gracefully)
signal.signal(signal.SIGTERM, self.exit_gracefully)

def exit_gracefully():
# Some logic to wait for video processing to finish, for now we'll wait 1 hour to give enough time.
time.sleep(3600)


The problem is that when I do this, moviepy raises an exception like this:

/lib/python3.7/site-packages/moviepy/video/io/ffmpeg_writer.py", line 136, in write_frame
self.proc.stdin.write(img_array.tobytes())
BrokenPipeError: [Errno 32] Broken pipe

During handling of the above exception, another exception occurred:

File "<decorator-gen-55>", line 2, in write_videofile
File "lib/python3.7/site-packages/moviepy/decorators.py", line 54, in requires_duration
return f(clip, *a, **k)
File "<decorator-gen-54>", line 2, in write_videofile
File "lib/python3.7/site-packages/moviepy/decorators.py", line 135, in use_clip_fps_by_default
return f(clip, *new_a, **new_kw)
File "<decorator-gen-53>", line 2, in write_videofile
File "lib/python3.7/site-packages/moviepy/decorators.py", line 22, in convert_masks_to_RGB
return f(clip, *a, **k)
File "lib/python3.7/site-packages/moviepy/video/VideoClip.py", line 307, in write_videofile
logger=logger)
File "lib/python3.7/site-packages/moviepy/video/io/ffmpeg_writer.py", line 228, in ffmpeg_write_video
writer.write_frame(frame)
File "lib/python3.7/site-packages/moviepy/video/io/ffmpeg_writer.py", line 180, in write_frame
raise IOError(error)
OSError: [Errno 32] Broken pipe

MoviePy error: FFMPEG encountered the following error while writing file /tmp/tmpt0o8ae6e/1633997015.176414_re_saved.mp4:

b''


Is there a way I can go around this error and allow my write file to finish? Another context is that this write_videofile() function is executed on a separate thread, I'm not sure if that's useful but it might help to give more insights.

Any ideas on how I can solve this?

Thanks!

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