Found all videos from directories, then add opening and ending, then remove silent parts.

CutSilentPartInVideo.py

#!/usr/bin/python

#
# This Python script adds opening and ending on Roleplaying game videos then it cuts silent parts.
# Silent parts lasts 1 seconds at least of full silence.
# For more details, see this blog post:
# http://blog.rolisteam.org
#
# LICENCE: Creative Commons 0 - Public Domain
# I, the author of this script, wave any rights and place this work in the public domain.
#

import numpy as np # for numerical operations
from moviepy.editor import VideoFileClip, concatenate_videoclips
import os 
import sys

opening = VideoFileClip("/home/renaud/documents/jdr/03_videos/L5ROpening.mp4")
ending = VideoFileClip("/home/renaud/documents/jdr/03_videos/EndingTsuruchiLess.mp4")
rootFolder = "/home/renaud/documents/jdr/03_videos/L5R"

for subfolder in sorted(os.listdir(rootFolder)):
	if("_done" not in subfolder):
		for subfile in os.listdir(os.path.join(rootFolder,subfolder)):
			if(("mp4" in subfile)and("Partie" in subfile)):
				link = os.path.join(rootFolder,subfolder)
				video = os.path.join(link,subfile)
				dest = subfile.replace(".mp4","_ending.mp4",1)
				destination = os.path.join(link,dest)
				videoclip = VideoFileClip(video)
				#concatenation of opening, video and ending
				finalclip = concatenate_videoclips([opening,videoclip,ending])
				finalclip.write_videofile(destination,fps=25)
				
                #split resulting video in audio subclip
				clip = VideoFileClip(destination)
				cut = lambda i: clip.audio.subclip(i,i+1).to_soundarray(fps=22000)
				volume = lambda array: np.sqrt(((1.0*array)**2).mean())
				volumes = [volume(cut(i)) for i in range(0,int(clip.audio.duration-2))]
				final_times= []

				i = 1
				duo = []
				start = -1
				end = 0
				sumVideo = 0
                #identify all part with sounds. What we keep.
				for vol in volumes:
					if(( vol == 0.0 )and (start!=-1)):
						end = i-1
						duo = [start,end]
						final_times.append(duo)
						sumVideo += (end-start)
						start = -1
					if((start == -1)and (vol>0.0)):
						start=i
					i=i+1

				finalpath = destination.replace("_ending","_cutted")
				print finalpath
				print final_times
                #concatenate all kept parts.
				final = concatenate_videoclips([clip.subclip(t[0],t[1])
                      for t in final_times])
                #write the file
                final.write_videofile(finalpath,fps=25)