Zulko/moviepy — pull request #54 by ssidorenko (2014-07-10 15:12:47+00:00)
Title: Forward audio encoding exceptions correctly

- In VideoClip.to_videofile, if on a multiprocessor computer, exceptions
during audio processing were not bubbling to the top, instead just a
warning message was shown.
- In ffmpeg_audiowriter, the way error were caught from ffmpeg was not
working.