general refactor & commenting
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504a1f774a
commit
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31
coub-dl.py
31
coub-dl.py
@ -31,6 +31,19 @@ def getDuration(ffprobe_output):
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raise ValueError('Cannot process ffprobe output!')
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return duration
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def downloadStreams():
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call(('/usr/bin/env', 'youtube-dl', '--extract-audio',
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'--output', '{}.%(ext)s'.format(FILES[Stream.AUDIO]),
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URL))
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call(('/usr/bin/env', 'youtube-dl', '--output', '{}.%(ext)s'.format(FILES[Stream.VIDEO]),
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URL))
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def readExtensions():
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for file in listdir():
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for filename in FILES:
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if match('^{}.*'.format(FILES[filename]), file):
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FILES[filename] = file
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FILES = {Stream.AUDIO: 'audio', Stream.VIDEO: 'video',
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File.LIST: 'list.txt', File.LOOP: 'loop', File.OUTPUT: 'output.mp4'}
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@ -38,23 +51,17 @@ OUTPUT_KEYS = [File.OUTPUT]
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URL = argv[1] if len(argv) > 0 else '' # youtube-dl error message will be shown if ''
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call(('/usr/bin/env', 'youtube-dl', '--extract-audio',
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'--output', '{}.%(ext)s'.format(FILES[Stream.AUDIO]),
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URL))
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call(('/usr/bin/env', 'youtube-dl', '--output', '{}.%(ext)s'.format(FILES[Stream.VIDEO]),
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URL))
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for file in listdir():
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for filename in FILES:
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if match('^{}.*'.format(FILES[filename]), file):
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FILES[filename] = file
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downloadStreams()
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readExtensions()
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# get stream lengths via ffprobe
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audioData= getDuration(getCmdStdErr(('/usr/bin/env', 'ffprobe', FILES[Stream.AUDIO]))).split(':')
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videoData = getDuration(getCmdStdErr(('/usr/bin/env', 'ffprobe', FILES[Stream.VIDEO]))).split(':')
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audioLen = timedelta(hours=float(audioData[0]), minutes=float(audioData[1]), seconds=float(audioData[2]))
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videoLen = timedelta(hours=float(videoData[0]), minutes=float(videoData[1]), seconds=float(videoData[2]))
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# decide which stream needs some looping
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longer = audioLen if audioLen > videoLen else videoLen
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shorter = audioLen if audioLen < videoLen else videoLen
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shorterFile = FILES[Stream.AUDIO] if audioLen < videoLen else FILES[Stream.VIDEO]
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@ -62,19 +69,23 @@ FILES[File.LOOP] += splitext(shorterFile)[1]
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timesLoop = ceil(longer.seconds / shorter.seconds)
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# write concat helper file for ffmpeg
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with open(FILES[File.LIST], 'w') as f:
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for i in range(timesLoop):
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print("file '{}'".format(shorterFile), file=f)
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# fetch video title
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FILES[File.OUTPUT] = check_output(('/usr/bin/env', 'youtube-dl', '--get-title', argv[1])).decode('utf-8').strip() + '.mp4'
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# loop & mux
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call(('/usr/bin/env', 'ffmpeg', '-f', 'concat', '-i', FILES[File.LIST], '-c', 'copy', FILES[File.LOOP]))
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call(('/usr/bin/env', 'ffmpeg', '-i', FILES[File.LOOP],
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'-i', FILES[Stream.AUDIO],
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'-map', '0', '-map', '1',
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'-c', 'copy', FILES[File.OUTPUT]))
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# cleanup
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for key in FILES:
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if key not in OUTPUT_KEYS:
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remove(FILES[key])
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