236 lines
8.3 KiB
Python
Executable File
236 lines
8.3 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright © 2017 Kristof Toth <mrtoth@strongds.hu>
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# This program is free software. It comes without any warranty, to the extent
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# permitted by applicable law. You can redistribute it and/or modify it under the
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# terms of the Do What The Fuck You Want To Public License, Version 2,
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# as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
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from subprocess import call, Popen, PIPE, check_output, DEVNULL, CalledProcessError
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from os import listdir, remove
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from os.path import splitext, exists, join
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from re import match
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from enum import Enum
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from datetime import timedelta
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from math import floor
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from argparse import ArgumentParser
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from signal import signal, SIGINT
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from sys import exit
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import utility
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from utility import call_verbose, print_opt, get_output, temporary_directory, yes_no_question
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class Stream(Enum):
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AUDIO = 1
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VIDEO = 2
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class File(Enum):
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LIST = 1
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LOOP = 2
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FRACTION = 3
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OUTPUT = 4
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FILES_DICT_DEFAULT = {Stream.AUDIO: 'audio', Stream.VIDEO: 'video',
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File.LIST: 'list.txt', File.LOOP: 'loop', File.FRACTION: 'fraction',
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File.OUTPUT: 'out'}
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OUTPUT_FILES = {File.OUTPUT}
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class coub_dl:
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def __init__(self, url, files_dict, directory):
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self._url = url
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self._files_dict = files_dict
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self._directory = directory
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def __call__(self):
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# download streams and update FILE dict with extensions
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self.download_audio_stream()
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self.download_video_stream()
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self.read_extensions()
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# get stream lengths via ffprobe
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audioLen = coub_dl.get_length(self._files_dict[Stream.AUDIO])
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videoLen = coub_dl.get_length(self._files_dict[Stream.VIDEO])
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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 = self._files_dict[Stream.AUDIO] if audioLen < videoLen else self._files_dict[Stream.VIDEO]
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self._files_dict[File.LOOP] += splitext(shorterFile)[1]
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self._files_dict[File.FRACTION] += splitext(shorterFile)[1]
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# calculate how many times to loop
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times = longer.total_seconds() / shorter.total_seconds()
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timesLoop_base = int(floor(times))
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timesLoop_fraction = times % 1
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# write concat helper file for ffmpeg
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with open(self._files_dict[File.LIST], 'w') as f:
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for i in range(timesLoop_base):
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print("file '{}'".format(shorterFile), file=f)
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print("file '{}'".format(self._files_dict[File.FRACTION]), file=f)
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# loop & mux streams
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self.loop_shorter_stream(shorter, shorterFile, timesLoop_fraction)
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self.mux_streams()
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@call_verbose(before_message='Downloading audio stream... ')
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def download_audio_stream(self):
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call(('youtube-dl', '--ignore-config',
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'--extract-audio',
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'--output', '{}.%(ext)s'.format(self._files_dict[Stream.AUDIO]),
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self._url),
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stdout=DEVNULL, stderr=DEVNULL)
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@call_verbose(before_message='Downloading video stream... ')
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def download_video_stream(self):
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url = get_output(('youtube-dl',
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'--get-url', self._url))
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curl = Popen(('curl', '--silent',
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'--write-out',
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'--location',
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url),
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stdout=PIPE)
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grep = Popen(('grep', '--only-matching', '"http.*"'),
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stdin=curl.stdout, stdout=PIPE)
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url = get_output(('sed', 's/muted_//g'),
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stdin=grep.stdout).strip('"')
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call(('youtube-dl', '--ignore-config',
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'--output', '{}.%(ext)s'.format(self._files_dict[Stream.VIDEO]),
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url),
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stdout=DEVNULL, stderr=DEVNULL)
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def read_extensions(self):
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for file in listdir(self._directory):
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for filename in self._files_dict:
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fullname = join(self._directory, file)
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if match('^{}.*'.format(self._files_dict[filename]), fullname):
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self._files_dict[filename] = fullname
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@call_verbose(before_message='Looping shorter stream... ')
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def loop_shorter_stream(self, shorter, shorter_file, loop_fraction):
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# prepare last fractional loop
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call(('ffmpeg', '-i', shorter_file, '-t', str(loop_fraction * shorter.total_seconds()),
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self._files_dict[File.FRACTION]),
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stdout=DEVNULL, stderr=DEVNULL)
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# concat them
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call(('ffmpeg', '-f', 'concat', '-safe', '0', '-i', self._files_dict[File.LIST],
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'-c', 'copy', self._files_dict[File.LOOP]),
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stdout=DEVNULL, stderr=DEVNULL)
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@call_verbose(before_message='Muxing streams... ')
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def mux_streams(self):
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call(('ffmpeg', '-i', self._files_dict[File.LOOP],
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'-i', self._files_dict[Stream.AUDIO],
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'-map', '0:v:0', '-map', '1:a:0',
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'-c', 'copy', self._files_dict[File.OUTPUT]),
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stdout=DEVNULL, stderr=DEVNULL)
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@staticmethod
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def get_length(file):
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data = coub_dl.get_duration(coub_dl.get_command_stderr(('ffprobe', file))).split(':')
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return timedelta(hours=float(data[0]), minutes=float(data[1]), seconds=float(data[2]))
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@staticmethod
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def get_command_stderr(command):
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process = Popen(command, stderr=PIPE, stdout=PIPE)
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out, err = process.communicate()
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return err
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@staticmethod
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def get_duration(ffprobe_output):
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durationPattern = r'.*Duration:\s(.+),\sstart.*'
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regex = match(durationPattern, str(ffprobe_output))
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duration = regex.groups()[0] if regex else None
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if not duration:
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raise ValueError('Cannot process ffprobe output!')
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return duration
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@staticmethod
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def get_title(url):
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return get_output(('youtube-dl', '--get-title', url))
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@staticmethod
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@call_verbose(before_message='Checking your system for dependencies... ', after_message='Found all!')
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def check_for_dependencies():
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check_for = (('youtube-dl', '--version'), ('ffmpeg', '-version'), ('curl', '--version'))
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error_str = '\nMissing dependencies: {}'
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missing = []
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for command in check_for:
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try: check_output(command)
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except (CalledProcessError, FileNotFoundError): missing.append(command[0])
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if missing: exit(error_str.format(', '.join(missing)))
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def run(URL, args):
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# create dict that contains files used
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FILES = FILES_DICT_DEFAULT
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determine_output_filename(URL, args.output, args.extension, FILES)
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# ask what to do if output exists
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if exists(FILES[File.OUTPUT]):
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answer = yes_no_question('A file named "{}" already exists! Overwrite?'.format(FILES[File.OUTPUT]),
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default='no')
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if not answer:
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print_opt('Exiting!')
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exit()
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else:
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remove(FILES[File.OUTPUT])
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# create temporary directory to work in
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with temporary_directory() as dir:
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# update temporary file locations in FILES dict
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for key in {key: FILES[key] for key in FILES if key not in OUTPUT_FILES}:
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FILES[key] = join(dir, FILES[key])
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coub_dl(URL, FILES, dir)()
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def determine_output_filename(url, user_supplied, extension, files_dict):
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if user_supplied is None:
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files_dict[File.OUTPUT] = coub_dl.get_title(url)
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else:
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files_dict[File.OUTPUT] = user_supplied
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files_dict[File.OUTPUT] += extension
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def parse_cmd_arguments():
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parser = ArgumentParser(description='Download player-looped videos with youtube-dl & ffmpeg.')
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parser.add_argument('-nv', '--nonverbose', action='store_true', help='Turn off non-critical messages to user')
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parser.add_argument('-o', '--output', default=None, help='Specify name of the output file (use -e for extension)')
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parser.add_argument('-e', '--extension', default='mp4', help='Set the container to use for the output')
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parser.add_argument('url', type=str, help='The URL of the site containing the video to download')
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args = parser.parse_args()
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args.extension = '.' + args.extension
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return args
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if __name__ == '__main__':
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signal(SIGINT, lambda a, b: exit('\nExiting!'))
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args = parse_cmd_arguments()
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utility.VERBOSE = False if args.nonverbose else True
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coub_dl.check_for_dependencies()
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run(args.url, args)
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