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authorSrikant Patnaik2015-02-22 10:12:36 +0530
committerSrikant Patnaik2015-02-22 10:12:36 +0530
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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()