New application under FOSSEE-tools to reduce noise from recorded videosNoNoise-1

1 files changed, 113 insertions, 0 deletions

diff --git a/opt/noNoise-master/noNoise.py b/opt/noNoise-master/noNoise.py
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+++ b/opt/noNoise-master/noNoise.py
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+#!/usr/bin/python env
+
+"""This script can be used to remove audio noise from 'ogv' videos. 
+   
+   Usage:(for future Srikant & all users)
+  
+   1)Remove noise from a single file:
+   ----------------------------------
+   $ python noNoise.py VideoWithNoise.ogv  CleanVideo.ogv
+                         (source file)     (destination file)
+                    
+                        (OR)
+
+   $ python noNoise.py VideoWithNoise.ogv  CleanVideo.ogv     0.21                      
+                         (source file)     (destination file) (noise factor)  
+
+   The third argument is optional(Noise factor). The scale spans from 
+   0.0 to 1.0. Zero means no noise supression and 1.0 means full. The full
+   scale is avoided. Best optimum result is found between 0.2 to 0.3. By default
+   script will take 0.26. One can experiment with noise factor to get best noise
+   free video. 
+   NOTE: Careful, destination file will be overwritten if exist in given path.
+   
+
+
+   2)Remove noise from all files inside a directory:
+   -------------------------------------------------
+   $ python noNoise.py allNoisyFiles  allCleanFiles
+                        (source dir)  (destination dir)
+
+                        (OR)
+                        
+   $ python noNoise.py allNoisyFiles  allCleanFiles      0.21
+                        (source Dir)   (destination dir) (Noise factor)
+
+
+   NOTE: Please don't use any '/' after directory name. It will spit error.
+   The fix is possible, but I don't want to spend time on it. This script is dirty
+   but useful(atleast for me). When I find time, I will surely modify it. Meanwhile
+   you all are welcome to add modifications. Please find this copy and future updates
+   at http://github.com/srikantpatnaik.
+   Thanks for your time.
+
+   Details of each commands are in README.rst.
+          
+"""
+
+from os   import system, path, listdir, chdir, mkdir
+from sys  import argv
+from time import sleep
+
+def checkType():
+    #Check for type of first argument(file or dir).
+    if path.isdir(argv[1]):
+        processDir()
+    else:
+        processFile()
+    return
+
+
+def processDir():
+    #make dir to save all new files
+    mkdir(argv[2])
+    #cd to source dir   
+    chdir(argv[1])
+    for eachfile in listdir('.'):
+        execute(setCommands(eachfile))
+    return
+
+
+def processFile():
+    #Calling setCommands with source file.
+    #Will return list of commands to be executed
+    execute(setCommands(argv[1]))
+    return
+    
+
+def execute(cli):     
+    #total 7 commands with some delay for disk
+    #write and sync    
+    for each in cli:
+        system(each)
+        sleep(0.2)
+    return    
+
+
+def setCommands(filename):
+     #The dirty function.        
+     cli = [None]*7
+     cli[0] = 'ffmpeg -i ' + ' ' + filename + ' -sameq -an ' + '.rawVideo.wmv'
+     cli[1] = 'ffmpeg -i ' + ' ' + filename + ' -sameq ' + '.rawAudio.wav'
+     cli[2] = 'sox .rawAudio.wav -t null /dev/null trim 0 0.5 noiseprof myprofile'
+     #Checks for noise factor.
+     if len(argv)>3:
+         cli[3] = 'sox .rawAudio.wav .noisefree.wav noisered myprofile ' + argv[3]
+     else:
+         #The default value for noise factor is 0.26. Change accordingly.   
+         cli[3] = 'sox .rawAudio.wav .noisefree.wav noisered myprofile 0.26'
+     #Creating a less compressed file to retain video quality.
+     cli[4] = 'ffmpeg -i .noisefree.wav -i .rawVideo.wmv -sameq .combined.wmv'
+     #Checks for file or directory. If dir, the output is saved in different directory.
+     if not path.isfile(argv[1]):
+         cli[5] = 'ffmpeg2theora .combined.wmv -o ' + '../' + argv[2] + '/' + filename
+     else:
+         #Will create the final ogv video from wmv.
+         cli[5] = 'ffmpeg2theora .combined.wmv -o ' + argv[2]
+     cli[6] = 'rm .rawVideo.wmv .rawAudio.wav .noisefree.wav .combined.wmv myprofile'
+     return cli
+
+
+
+if __name__ == '__main__':
+     checkType()