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| === youtube-dl === | | === youtube-dl === |
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| <b><font color=red>Versteckter Quelltext</font></b>
| | [[/youtube-dl Quelltext|youtube-dl Quelltext]] |
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| Um den Browser nicht durch Firefox-Erweiterungen zu verlangsamen kann das Python-Skript [http://www.arrakis.es/~rggi3/youtube-dl/ youtube-dl] verwendet werden. | | Um den Browser nicht durch Firefox-Erweiterungen zu verlangsamen kann das Python-Skript [http://www.arrakis.es/~rggi3/youtube-dl/ youtube-dl] verwendet werden. |
| <!--
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| #!/usr/bin/env python
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| #
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| # youtube-dl 2007.01.19
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| # Copyright (c) 2006 Ricardo Garcia Gonzalez
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| #
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| # Permission is hereby granted, free of charge, to any person obtaining a
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| # copy of this software and associated documentation files (the "Software"),
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| # to deal in the Software without restriction, including without limitation
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| # the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| # and/or sell copies of the Software, and to permit persons to whom the
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| # Software is furnished to do so, subject to the following conditions:
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| #
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| # The above copyright notice and this permission notice shall be included
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| # in all copies or substantial portions of the Software.
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| #
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| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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| # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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| # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| # OTHER DEALINGS IN THE SOFTWARE.
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| #
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| # Except as contained in this notice, the name(s) of the above copyright
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| # holders shall not be used in advertising or otherwise to promote the
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| # sale, use or other dealings in this Software without prior written
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| # authorization.
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| #
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| import sys
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| import optparse
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| import httplib
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| import urllib2
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| import re
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| import string
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| import os
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| import time
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| import netrc
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| import getpass
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|
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| # First off, check Python and refuse to run
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| if sys.hexversion < 0x020400f0:
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| sys.exit('Error: Python 2.4 or later needed to run the program')
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|
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| # Global constants
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| const_video_url_str = 'http://www.youtube.com/watch?v=%s'
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| const_video_url_re = re.compile(r'(?:http://)?(?:www\d*\.)?youtube\.com/(?:v/|(?:watch(?:\.php)?)?\?v=)([^&]+).*')
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| const_login_url_str = 'http://www.youtube.com/login?next=/watch%%3Fv%%3D%s'
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| const_login_post_str = 'current_form=loginForm&next=%%2Fwatch%%3Fv%%3D%s&username=%s&password=%s&action_login=Log+In'
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| const_age_url_str = 'http://www.youtube.com/verify_age?next_url=/watch%%3Fv%%3D%s'
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| const_age_post_str = 'next_url=%%2Fwatch%%3Fv%%3D%s&action_confirm=Confirm'
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| const_video_url_params_re = re.compile(r'player2\.swf\?([^"]+)"', re.M)
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| const_video_url_real_str = 'http://www.youtube.com/get_video?%s'
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| const_video_title_re = re.compile(r'<title>YouTube - ([^<]*)</title>', re.M | re.I)
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| const_1k = 1024
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| const_initial_block_size = 10 * const_1k
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|
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| # Print error message, followed by standard advice information, and then exit
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| def error_advice_exit(error_text):
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| sys.stderr.write('Error: %s.\n' % error_text)
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| sys.stderr.write('Try again several times. It may be a temporal problem.\n')
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| sys.stderr.write('Other typical problems:\n\n')
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| sys.stderr.write('\tVideo no longer exists.\n')
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| sys.stderr.write('\tVideo requires age confirmation but you did not provide an account.\n')
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| sys.stderr.write('\tYou provided the account data, but it is not valid.\n')
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| sys.stderr.write('\tThe connection was cut suddenly for some reason.\n')
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| sys.stderr.write('\tYouTube changed their system, and the program no longer works.\n')
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| sys.stderr.write('\nTry to confirm you are able to view the video using a web browser.\n')
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| sys.stderr.write('Use the same video URL and account information, if needed, with this program.\n')
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| sys.stderr.write('When using a proxy, make sure http_proxy has http://host:port format.\n')
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| sys.stderr.write('Try again several times and contact me if the problem persists.\n')
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| sys.exit('\n')
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|
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| # Wrapper to create custom requests with typical headers
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| def request_create(url, data=None):
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| retval = urllib2.Request(url)
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| if data is not None:
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| retval.add_data(data)
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| # Try to mimic Firefox, at least a little bit
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| retval.add_header('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0')
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| retval.add_header('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7')
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| retval.add_header('Accept', 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5')
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| retval.add_header('Accept-Language', 'en-us,en;q=0.5')
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| return retval
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|
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| # Perform a request, process headers and return response
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| def perform_request(url, data=None):
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| request = request_create(url, data)
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| response = urllib2.urlopen(request)
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| return response
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|
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| # Convert bytes to KiB
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| def to_k(bytes):
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| global const_1k
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| return bytes / const_1k
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|
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| # Conditional print
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| def cond_print(str):
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| global cmdl_opts
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| if not cmdl_opts.quiet:
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| sys.stdout.write(str)
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| sys.stdout.flush()
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|
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| # Title string normalization
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| def title_string_norm(title):
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| title = ''.join((x in string.ascii_letters or x in string.digits) and x or ' ' for x in title)
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| title = '_'.join(title.split())
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| title = title.lower()
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| return title
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|
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| # Generic download step
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| def download_step(return_data_flag, step_title, step_error, url, post_data=None):
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| try:
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| cond_print('%s... ' % step_title)
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| data = perform_request(url, post_data).read()
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| cond_print('done.\n')
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| if return_data_flag:
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| return data
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| return None
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|
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| except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError):
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| cond_print('failed.\n')
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| error_advice_exit(step_error)
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|
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| except KeyboardInterrupt:
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| sys.exit('\n')
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|
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| # Generic extract step
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| def extract_step(step_title, step_error, regexp, data):
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| try:
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| cond_print('%s... ' % step_title)
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| match = regexp.search(data)
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|
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| if match is None:
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| cond_print('failed.\n')
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| error_advice_exit(step_error)
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|
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| extracted_data = match.group(1)
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| cond_print('done.\n')
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| return extracted_data
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|
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| except KeyboardInterrupt:
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| sys.exit('\n')
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|
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| # Calculate new block size based on previous block size
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| def new_block_size(before, after, bytes):
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| new_min = max(bytes / 2, 1)
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| new_max = max(bytes * 2, 1)
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| dif = after - before
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| if dif < 0.0001:
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| return new_max
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| rate = int(bytes / dif)
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| if rate > new_max:
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| return new_max
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| if rate < new_min:
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| return new_min
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| return rate
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|
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| # Create the command line options parser and parse command line
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| cmdl_usage = 'usage: %prog [options] video_url'
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| cmdl_version = '2007.01.19'
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| cmdl_parser = optparse.OptionParser(usage=cmdl_usage, version=cmdl_version, conflict_handler='resolve')
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| cmdl_parser.add_option('-h', '--help', action='help', help='print this help text and exit')
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| cmdl_parser.add_option('-v', '--version', action='version', help='print program version and exit')
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| cmdl_parser.add_option('-u', '--username', dest='username', metavar='USERNAME', help='account username')
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| cmdl_parser.add_option('-p', '--password', dest='password', metavar='PASSWORD', help='account password')
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| cmdl_parser.add_option('-o', '--output', dest='outfile', metavar='FILE', help='output video file name')
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| cmdl_parser.add_option('-q', '--quiet', action='store_true', dest='quiet', help='activates quiet mode')
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| cmdl_parser.add_option('-s', '--simulate', action='store_true', dest='simulate', help='do not download video')
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| cmdl_parser.add_option('-t', '--title', action='store_true', dest='use_title', help='use title in file name')
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| cmdl_parser.add_option('-n', '--netrc', action='store_true', dest='use_netrc', help='use .netrc authentication data')
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| (cmdl_opts, cmdl_args) = cmdl_parser.parse_args()
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|
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| # Get video URL
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| if len(cmdl_args) != 1:
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| cmdl_parser.print_help()
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| sys.exit('\n')
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| video_url_cmdl = cmdl_args[0]
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|
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| # Verify video URL format and convert to "standard" format
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| video_url_mo = const_video_url_re.match(video_url_cmdl)
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| if video_url_mo is None:
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| sys.exit('Error: URL does not seem to be a youtube video URL. If it is, report a bug.')
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| video_url_id = video_url_mo.group(1)
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| video_url = const_video_url_str % video_url_id
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|
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| # Check conflicting options
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| if cmdl_opts.outfile is not None and cmdl_opts.simulate:
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| sys.stderr.write('Warning: video file name given but will not be used.\n')
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|
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| if cmdl_opts.outfile is not None and cmdl_opts.use_title:
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| sys.exit('Error: using the video title conflicts with using a given file name.')
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|
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| if cmdl_opts.use_netrc and cmdl_opts.password is not None:
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| sys.exit('Error: using netrc conflicts with giving command line password.')
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|
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| # Incorrect option formatting
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| if cmdl_opts.username is None and cmdl_opts.password is not None:
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| sys.exit('Error: password give but username is missing.')
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|
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| # Get account information if any
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| account_username = None
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| account_password = None
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|
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| if cmdl_opts.use_netrc:
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| try:
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| info = netrc.netrc().authenticators('youtube')
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| if info is None:
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| sys.exit('Error: no authenticators for machine youtube.')
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| netrc_username = info[0]
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| netrc_password = info[2]
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| except IOError:
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| sys.exit('Error: unable to read .netrc file.')
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| except netrc.NetrcParseError:
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| sys.exit('Error: unable to parse .netrc file.')
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|
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| if cmdl_opts.password is not None:
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| account_username = cmdl_opts.username
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| account_password = cmdl_opts.password
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| else:
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| if cmdl_opts.username is not None and cmdl_opts.use_netrc:
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| if cmdl_opts.username != netrc_username:
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| sys.exit('Error: conflicting username from .netrc and command line options.')
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| account_username = cmdl_opts.username
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| account_password = netrc_password
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| elif cmdl_opts.username is not None:
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| account_username = cmdl_opts.username
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| account_password = getpass.getpass('Type YouTube password and press return: ')
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| elif cmdl_opts.use_netrc:
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| if len(netrc_username) == 0:
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| sys.exit('Error: empty username in .netrc file.')
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| account_username = netrc_username
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| account_password = netrc_password
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|
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| # Get output file name
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| if cmdl_opts.outfile is None:
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| video_filename = '%s.flv' % video_url_id
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| else:
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| video_filename = cmdl_opts.outfile
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|
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| # Check name
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| if not video_filename.lower().endswith('.flv'):
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| sys.stderr.write('Warning: video file name does not end in .flv\n')
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|
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| # Test writable file
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| if not cmdl_opts.simulate:
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| try:
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| disk_test = open(video_filename, 'wb')
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| disk_test.close()
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|
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| except (OSError, IOError):
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| sys.exit('Error: unable to open %s for writing.' % video_filename)
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|
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| # Install cookie and proxy handlers
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| urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler()))
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| urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor()))
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|
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| # Log in and confirm age if needed
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| if account_username is not None:
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| url = const_login_url_str % video_url_id
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| post = const_login_post_str % (video_url_id, account_username, account_password)
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| download_step(False, 'Logging in', 'unable to log in', url, post)
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|
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| url = const_age_url_str % video_url_id
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| post = const_age_post_str % video_url_id
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| download_step(False, 'Confirming age', 'unable to confirm age', url, post)
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|
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| # Retrieve video webpage
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| video_webpage = download_step(True, 'Retrieving video webpage', 'unable to retrieve video webpage', video_url)
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|
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| # Extract video title if needed
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| if cmdl_opts.use_title:
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| video_title = extract_step('Extracting video title', 'unable to extract video title', const_video_title_re, video_webpage)
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|
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| # Extract needed video URL parameters
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| video_url_params = extract_step('Extracting video URL parameters', 'unable to extract URL parameters', const_video_url_params_re, video_webpage)
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| video_url_real = const_video_url_real_str % video_url_params
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|
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| # Retrieve video data
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| try:
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| video_data = perform_request(video_url_real)
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| cond_print('Video data found at %s\n' % video_data.geturl())
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|
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| # Abort here if in simulate mode
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| if cmdl_opts.simulate:
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| sys.exit()
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|
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| video_file = open(video_filename, 'wb')
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| try:
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| video_len_str = '%sk' % to_k(long(video_data.info()['Content-length']))
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| except KeyError:
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| video_len_str = '(unknown)'
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|
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| byte_counter = 0
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| block_size = const_initial_block_size
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| while True:
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| cond_print('\rRetrieving video data... %sk of %s ' % (to_k(byte_counter), video_len_str))
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| before = time.time()
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| video_block = video_data.read(block_size)
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| after = time.time()
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| dl_bytes = len(video_block)
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| if dl_bytes == 0:
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| break
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| byte_counter += dl_bytes
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| video_file.write(video_block)
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| block_size = new_block_size(before, after, dl_bytes)
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|
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| video_file.close()
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| cond_print('done.\n')
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| cond_print('Video data saved to %s\n' % video_filename)
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|
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| except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError):
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| cond_print('failed.\n')
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| error_advice_exit('unable to download video data')
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|
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| except KeyboardInterrupt:
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| sys.exit('\n')
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|
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| # Rename video file if needed
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| if cmdl_opts.use_title:
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| try:
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| final_filename = '%s-%s.flv' % (title_string_norm(video_title), video_url_id)
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| os.rename(video_filename, final_filename)
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| cond_print('Video file renamed to %s\n' % final_filename)
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|
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| except OSError:
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| sys.stderr.write('Warning: unable to rename file.\n')
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|
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| except KeyboardInterrupt:
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| sys.exit('\n')
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|
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| # Finish
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| sys.exit()
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|
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| -->
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| Anzeige der Hilfe. | | Anzeige der Hilfe. |
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