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coub-dl
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general refactor & commenting

This commit is contained in:
Kjistóf 2017-01-15 22:28:37 +01:00
parent 504a1f774a
commit 84e9340b56
1 changed files with 21 additions and 10 deletions
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31
coub-dl.py
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@ -31,6 +31,19 @@ def getDuration(ffprobe_output):
raise ValueError('Cannot process ffprobe output!')
return duration
def downloadStreams():
call(('/usr/bin/env', 'youtube-dl', '--extract-audio',
'--output', '{}.%(ext)s'.format(FILES[Stream.AUDIO]),
URL))
call(('/usr/bin/env', 'youtube-dl', '--output', '{}.%(ext)s'.format(FILES[Stream.VIDEO]),
URL))
def readExtensions():
for file in listdir():
for filename in FILES:
if match('^{}.*'.format(FILES[filename]), file):
FILES[filename] = file
FILES = {Stream.AUDIO: 'audio', Stream.VIDEO: 'video',
File.LIST: 'list.txt', File.LOOP: 'loop', File.OUTPUT: 'output.mp4'}
@ -38,23 +51,17 @@ OUTPUT_KEYS = [File.OUTPUT]
URL = argv[1] if len(argv) > 0 else '' # youtube-dl error message will be shown if ''
call(('/usr/bin/env', 'youtube-dl', '--extract-audio',
'--output', '{}.%(ext)s'.format(FILES[Stream.AUDIO]),
URL))
call(('/usr/bin/env', 'youtube-dl', '--output', '{}.%(ext)s'.format(FILES[Stream.VIDEO]),
URL))
for file in listdir():
for filename in FILES:
if match('^{}.*'.format(FILES[filename]), file):
FILES[filename] = file
downloadStreams()
readExtensions()
# get stream lengths via ffprobe
audioData= getDuration(getCmdStdErr(('/usr/bin/env', 'ffprobe', FILES[Stream.AUDIO]))).split(':')
videoData = getDuration(getCmdStdErr(('/usr/bin/env', 'ffprobe', FILES[Stream.VIDEO]))).split(':')
audioLen = timedelta(hours=float(audioData[0]), minutes=float(audioData[1]), seconds=float(audioData[2]))
videoLen = timedelta(hours=float(videoData[0]), minutes=float(videoData[1]), seconds=float(videoData[2]))
# decide which stream needs some looping
longer = audioLen if audioLen > videoLen else videoLen
shorter = audioLen if audioLen < videoLen else videoLen
shorterFile = FILES[Stream.AUDIO] if audioLen < videoLen else FILES[Stream.VIDEO]
@ -62,19 +69,23 @@ FILES[File.LOOP] += splitext(shorterFile)[1]
timesLoop = ceil(longer.seconds / shorter.seconds)
# write concat helper file for ffmpeg
with open(FILES[File.LIST], 'w') as f:
for i in range(timesLoop):
print("file '{}'".format(shorterFile), file=f)
# fetch video title
FILES[File.OUTPUT] = check_output(('/usr/bin/env', 'youtube-dl', '--get-title', argv[1])).decode('utf-8').strip() + '.mp4'
# loop & mux
call(('/usr/bin/env', 'ffmpeg', '-f', 'concat', '-i', FILES[File.LIST], '-c', 'copy', FILES[File.LOOP]))
call(('/usr/bin/env', 'ffmpeg', '-i', FILES[File.LOOP],
'-i', FILES[Stream.AUDIO],
'-map', '0', '-map', '1',
'-c', 'copy', FILES[File.OUTPUT]))
# cleanup
for key in FILES:
if key not in OUTPUT_KEYS:
remove(FILES[key])