Uploaded the important Python file

jumpcutter.py

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+from contextlib import closing
+from PIL import Image
+import subprocess
+from audiotsm import phasevocoder
+from audiotsm.io.wav import WavReader, WavWriter
+from scipy.io import wavfile
+import numpy as np
+import re
+import math
+from shutil import copyfile, rmtree
+import os
+import argparse
+
+def getMaxVolume(s):
+    maxv = float(np.max(s))
+    minv = float(np.min(s))
+    return max(maxv,-minv)
+
+def copyFrame(inputFrame,outputFrame):
+    src = TEMP_FOLDER+"/frame{:06d}".format(inputFrame+1)+".jpg"
+    dst = TEMP_FOLDER+"/newFrame{:06d}".format(outputFrame+1)+".jpg"
+    if not os.path.isfile(src):
+        return False
+    copyfile(src, dst)
+    if outputFrame%20 == 19:
+        print(str(outputFrame+1)+" time-altered frames saved.")
+    return True
+
+def inputToOutputFilename(filename):
+    dotIndex = filename.rfind(".")
+    return filename[:dotIndex]+"_ALTERED"+filename[dotIndex:]
+
+def createPath(s):
+    #assert (not os.path.exists(s)), "The filepath "+s+" already exists. Don't want to overwrite it. Aborting."
+
+    try:  
+        os.mkdir(s)
+    except OSError:  
+        assert False, "Creation of the directory %s failed. (The TEMP folder may already exist. Delete or rename it, and try again.)"
+
+def deletePath(s): # Dangerous! Watch out!
+    try:  
+        rmtree(s,ignore_errors=False)
+    except OSError:  
+        print ("Deletion of the directory %s failed" % s)
+        print(OSError)
+
+parser = argparse.ArgumentParser(description='Modifies a video file to play at different speeds when there is sound vs. silence.')
+parser.add_argument('--input_file', type=str,  help='the video file you want modified')
+parser.add_argument('--output_file', type=str, default="", help="the output file. (optional. if not included, it'll just modify the input file name)")
+parser.add_argument('--silent_threshold', type=float, default=0.03, help="the volume amount that frames' audio needs to surpass to be consider \"sounded\". It ranges from 0 (silence) to 1 (max volume)")
+parser.add_argument('--sounded_speed', type=float, default=1.00, help="the speed that sounded (spoken) frames should be played at. Typically 1.")
+parser.add_argument('--silent_speed', type=float, default=5.00, help="the speed that silent frames should be played at. 999999 for jumpcutting.")
+parser.add_argument('--frame_margin', type=float, default=1, help="some silent frames adjacent to sounded frames are included to prodive context. How many frames on either the side of speech should be included? That's this variable.")
+parser.add_argument('--sample_rate', type=float, default=44100, help="sample rate of the input and output videos")
+parser.add_argument('--frame_rate', type=float, default=30, help="frame rate of the input and output videos. optional... I try to find it out myself, but it doesn't always work.")
+parser.add_argument('--frame_quality', type=int, default=3, help="quality of frames to be extracted from input video. Range: (1-5). 3 is the default.")
+
+args = parser.parse_args()
+
+frameRate = args.frame_rate
+SAMPLE_RATE = args.sample_rate
+SILENT_THRESHOLD = args.silent_threshold
+FRAME_SPREADAGE = args.frame_margin
+NEW_SPEED = [args.silent_speed, args.sounded_speed]
+INPUT_FILE = args.input_file
+FRAME_QUALITY = args.frame_quality
+
+assert INPUT_FILE != None, "why u put no input file, that dum"
+    
+OUTPUT_FILE = inputToOutputFilename(INPUT_FILE)
+if len(args.output_file) >= 1:
+    OUTPUT_FILE = args.output_file
+
+TEMP_FOLDER = "TEMP"
+AUDIO_FADE_ENVELOPE_SIZE = 400 # smooth out transitiion's audio by quickly fading in/out (arbitrary magic number whatever)
+    
+createPath(TEMP_FOLDER)
+
+command = "ffmpeg -i "+INPUT_FILE+" -qscale:v "+str(FRAME_QUALITY)+" "+TEMP_FOLDER+"/frame%06d.jpg -hide_banner"
+subprocess.call(command, shell=True)
+
+command = "ffmpeg -i "+INPUT_FILE+" -ab 160k -ac 2 -ar "+str(SAMPLE_RATE)+" -vn "+TEMP_FOLDER+"/audio.wav"
+
+subprocess.call(command, shell=True)
+
+command = "ffmpeg -i "+TEMP_FOLDER+"/input.mp4 2>&1"
+f = open(TEMP_FOLDER+"/params.txt", "w")
+subprocess.call(command, shell=True, stdout=f)
+
+
+
+sampleRate, audioData = wavfile.read(TEMP_FOLDER+"/audio.wav")
+audioSampleCount = audioData.shape[0]
+maxAudioVolume = getMaxVolume(audioData)
+
+f = open(TEMP_FOLDER+"/params.txt", 'r+')
+pre_params = f.read()
+f.close()
+params = pre_params.split('\n')
+for line in params:
+    m = re.search('Stream #.*Video.* ([0-9]*) fps',line)
+    if m is not None:
+        frameRate = float(m.group(1))
+
+samplesPerFrame = sampleRate/frameRate
+
+audioFrameCount = int(math.ceil(audioSampleCount/samplesPerFrame))
+
+hasLoudAudio = np.zeros((audioFrameCount))
+
+
+
+for i in range(audioFrameCount):
+    start = int(i*samplesPerFrame)
+    end = min(int((i+1)*samplesPerFrame),audioSampleCount)
+    audiochunks = audioData[start:end]
+    maxchunksVolume = float(getMaxVolume(audiochunks))/maxAudioVolume
+    if maxchunksVolume >= SILENT_THRESHOLD:
+        hasLoudAudio[i] = 1
+
+chunks = [[0,0,0]]
+shouldIncludeFrame = np.zeros((audioFrameCount))
+for i in range(audioFrameCount):
+    start = int(max(0,i-FRAME_SPREADAGE))
+    end = int(min(audioFrameCount,i+1+FRAME_SPREADAGE))
+    shouldIncludeFrame[i] = np.max(hasLoudAudio[start:end])
+    if (i >= 1 and shouldIncludeFrame[i] != shouldIncludeFrame[i-1]): # Did we flip?
+        chunks.append([chunks[-1][1],i,shouldIncludeFrame[i-1]])
+
+chunks.append([chunks[-1][1],audioFrameCount,shouldIncludeFrame[i-1]])
+chunks = chunks[1:]
+
+outputAudioData = np.zeros((0,audioData.shape[1]))
+outputPointer = 0
+
+lastExistingFrame = None
+for chunk in chunks:
+    audioChunk = audioData[int(chunk[0]*samplesPerFrame):int(chunk[1]*samplesPerFrame)]
+    
+    sFile = TEMP_FOLDER+"/tempStart.wav"
+    eFile = TEMP_FOLDER+"/tempEnd.wav"
+    wavfile.write(sFile,SAMPLE_RATE,audioChunk)
+    with WavReader(sFile) as reader:
+        with WavWriter(eFile, reader.channels, reader.samplerate) as writer:
+            tsm = phasevocoder(reader.channels, speed=NEW_SPEED[int(chunk[2])])
+            tsm.run(reader, writer)
+    _, alteredAudioData = wavfile.read(eFile)
+    leng = alteredAudioData.shape[0]
+    endPointer = outputPointer+leng
+    outputAudioData = np.concatenate((outputAudioData,alteredAudioData/maxAudioVolume))
+
+    #outputAudioData[outputPointer:endPointer] = alteredAudioData/maxAudioVolume
+
+    # smooth out transitiion's audio by quickly fading in/out
+    
+    if leng < AUDIO_FADE_ENVELOPE_SIZE:
+        outputAudioData[outputPointer:endPointer] = 0 # audio is less than 0.01 sec, let's just remove it.
+    else:
+        premask = np.arange(AUDIO_FADE_ENVELOPE_SIZE)/AUDIO_FADE_ENVELOPE_SIZE
+        mask = np.repeat(premask[:, np.newaxis],2,axis=1) # make the fade-envelope mask stereo
+        outputAudioData[outputPointer:outputPointer+AUDIO_FADE_ENVELOPE_SIZE] *= mask
+        outputAudioData[endPointer-AUDIO_FADE_ENVELOPE_SIZE:endPointer] *= 1-mask
+
+    startOutputFrame = int(math.ceil(outputPointer/samplesPerFrame))
+    endOutputFrame = int(math.ceil(endPointer/samplesPerFrame))
+    for outputFrame in range(startOutputFrame, endOutputFrame):
+        inputFrame = int(chunk[0]+NEW_SPEED[int(chunk[2])]*(outputFrame-startOutputFrame))
+        didItWork = copyFrame(inputFrame,outputFrame)
+        if didItWork:
+            lastExistingFrame = inputFrame
+        else:
+            copyFrame(lastExistingFrame,outputFrame)
+
+    outputPointer = endPointer
+
+wavfile.write(TEMP_FOLDER+"/audioNew.wav",SAMPLE_RATE,outputAudioData)
+
+'''
+outputFrame = math.ceil(outputPointer/samplesPerFrame)
+for endGap in range(outputFrame,audioFrameCount):
+    copyFrame(int(audioSampleCount/samplesPerFrame)-1,endGap)
+'''
+
+command = "ffmpeg -framerate "+str(frameRate)+" -i "+TEMP_FOLDER+"/newFrame%06d.jpg -i "+TEMP_FOLDER+"/audioNew.wav -strict -2 "+OUTPUT_FILE
+subprocess.call(command, shell=True)
+
+deletePath(TEMP_FOLDER)
+