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youtube-dl.py
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#!/usr/bin/env python | |
# | |
# Copyright (c) 2006-2008 Ricardo Garcia Gonzalez | |
# | |
# Permission is hereby granted, free of charge, to any person obtaining a | |
# copy of this software and associated documentation files (the "Software"), | |
# to deal in the Software without restriction, including without limitation | |
# the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
# and/or sell copies of the Software, and to permit persons to whom the | |
# Software is furnished to do so, subject to the following conditions: | |
# | |
# The above copyright notice and this permission notice shall be included | |
# in all copies or substantial portions of the Software. | |
# | |
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
# OTHER DEALINGS IN THE SOFTWARE. | |
# | |
# Except as contained in this notice, the name(s) of the above copyright | |
# holders shall not be used in advertising or otherwise to promote the | |
# sale, use or other dealings in this Software without prior written | |
# authorization. | |
# | |
import getpass | |
import httplib | |
import math | |
import netrc | |
import optparse | |
import os | |
import re | |
import socket | |
import string | |
import sys | |
import time | |
import urllib | |
import urllib2 | |
# Global constants | |
const_1k = 1024 | |
const_initial_block_size = 10 * const_1k | |
const_epsilon = 0.0001 | |
const_timeout = 120 | |
const_video_url_str = 'http://www.youtube.com/watch?v=%s' | |
const_video_url_re = re.compile(r'^((?:http://)?(?:\w+\.)?youtube\.com/(?:(?:v/)|(?:(?:watch(?:\.php)?)?\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$') | |
const_video_url_format_suffix = '&fmt=%s' | |
const_best_quality_format = 18 | |
const_login_url_str = 'http://www.youtube.com/login?next=/watch%%3Fv%%3D%s' | |
const_login_post_str = 'current_form=loginForm&next=%%2Fwatch%%3Fv%%3D%s&username=%s&password=%s&action_login=Log+In' | |
const_bad_login_re = re.compile(r'(?i)<form[^>]* name="loginForm"') | |
const_age_url_str = 'http://www.youtube.com/verify_age?next_url=/watch%%3Fv%%3D%s' | |
const_age_post_str = 'next_url=%%2Fwatch%%3Fv%%3D%s&action_confirm=Confirm' | |
const_url_t_param_re = re.compile(r', "t": "([^"]+)"') | |
const_video_url_real_str = 'http://www.youtube.com/get_video?video_id=%s&t=%s' | |
const_video_title_re = re.compile(r'<title>YouTube - ([^<]*)</title>', re.M | re.I) | |
# Print error message, followed by standard advice information, and then exit | |
def error_advice_exit(error_text): | |
sys.stderr.write('ERROR: %s.\n' % error_text) | |
sys.stderr.write('Try again several times. It may be a temporary problem.\n') | |
sys.stderr.write('Other typical problems:\n\n') | |
sys.stderr.write('* Video no longer exists.\n') | |
sys.stderr.write('* Video requires age confirmation but you did not provide an account.\n') | |
sys.stderr.write('* You provided the account data, but it is not valid.\n') | |
sys.stderr.write('* The connection was cut suddenly for some reason.\n') | |
sys.stderr.write('* YouTube changed their system, and this program version no longer works.\n') | |
sys.stderr.write('\nTry to confirm you are able to view the video using a web browser.\n') | |
sys.stderr.write('Use the same video URL and account information, if needed, with this program.\n') | |
sys.stderr.write('When using a proxy, make sure http_proxy has http://host:port format.\n') | |
sys.stderr.write('Make sure you are using the latest program version.\n') | |
sys.stderr.write('Try again several times and contact me if the problem persists.\n') | |
sys.exit('\n') | |
# Wrapper to create custom requests with typical headers | |
def request_create(url, extra_headers, post_data): | |
retval = urllib2.Request(url) | |
if post_data is not None: | |
retval.add_data(post_data) | |
# Try to mimic Firefox, at least a little bit | |
retval.add_header('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14') | |
retval.add_header('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7') | |
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') | |
retval.add_header('Accept-Language', 'en-us,en;q=0.5') | |
if extra_headers is not None: | |
for header in extra_headers: | |
retval.add_header(header[0], header[1]) | |
return retval | |
# Perform a request, process headers and return response | |
def perform_request(url, headers=None, data=None): | |
request = request_create(url, headers, data) | |
response = urllib2.urlopen(request) | |
return response | |
# Conditional print | |
def cond_print(str): | |
global cmdl_opts | |
if not (cmdl_opts.quiet or cmdl_opts.get_url): | |
sys.stdout.write(str) | |
sys.stdout.flush() | |
# Title string normalization | |
def title_string_norm(title): | |
title = ''.join((x in string.ascii_letters or x in string.digits) and x or ' ' for x in title) | |
title = '_'.join(title.split()) | |
title = title.lower() | |
return title | |
# Generic download step | |
def download_step(return_data_flag, step_title, step_error, url, post_data=None): | |
try: | |
cond_print('%s... ' % step_title) | |
data = perform_request(url, data=post_data).read() | |
cond_print('done.\n') | |
if return_data_flag: | |
return data | |
return None | |
except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError, socket.error): | |
cond_print('failed.\n') | |
error_advice_exit(step_error) | |
except KeyboardInterrupt: | |
sys.exit('\n') | |
# Generic extract step | |
def extract_step(step_title, step_error, regexp, data): | |
try: | |
cond_print('%s... ' % step_title) | |
match = regexp.search(data) | |
if match is None: | |
cond_print('failed.\n') | |
error_advice_exit(step_error) | |
extracted_data = match.group(1) | |
cond_print('done.\n') | |
return extracted_data | |
except KeyboardInterrupt: | |
sys.exit('\n') | |
# Calculate new block size based on previous block size | |
def new_block_size(before, after, bytes): | |
new_min = max(bytes / 2.0, 1.0) | |
new_max = max(bytes * 2.0, 1.0) | |
dif = after - before | |
if dif < const_epsilon: | |
return int(new_max) | |
rate = bytes / dif | |
if rate > new_max: | |
return int(new_max) | |
if rate < new_min: | |
return int(new_min) | |
return int(rate) | |
# Get optimum 1k exponent to represent a number of bytes | |
def optimum_k_exp(num_bytes): | |
global const_1k | |
if num_bytes == 0: | |
return 0 | |
return long(math.log(num_bytes, const_1k)) | |
# Get optimum representation of number of bytes | |
def format_bytes(num_bytes): | |
global const_1k | |
try: | |
exp = optimum_k_exp(num_bytes) | |
suffix = 'bkMGTPEZY'[exp] | |
if exp == 0: | |
return '%s%s' % (num_bytes, suffix) | |
converted = float(num_bytes) / float(const_1k**exp) | |
return '%.2f%s' % (converted, suffix) | |
except IndexError: | |
sys.exit('Error: internal error formatting number of bytes.') | |
# Calculate ETA and return it in string format as MM:SS | |
def calc_eta(start, now, total, current): | |
dif = now - start | |
if current == 0 or dif < const_epsilon: | |
return '--:--' | |
rate = float(current) / dif | |
eta = long((total - current) / rate) | |
(eta_mins, eta_secs) = divmod(eta, 60) | |
if eta_mins > 99: | |
return '--:--' | |
return '%02d:%02d' % (eta_mins, eta_secs) | |
# Calculate speed and return it in string format | |
def calc_speed(start, now, bytes): | |
dif = now - start | |
if bytes == 0 or dif < const_epsilon: | |
return 'N/A b' | |
return format_bytes(float(bytes) / dif) | |
# Title string minimal transformation | |
def title_string_touch(title): | |
return title.replace(os.sep, '%') | |
# Create the command line options parser and parse command line | |
cmdl_usage = 'usage: %prog [options] video_url ...' | |
cmdl_version = '2008.04.20' | |
cmdl_parser = optparse.OptionParser(usage=cmdl_usage, version=cmdl_version, conflict_handler='resolve') | |
cmdl_parser.add_option('-h', '--help', action='help', help='print this help text and exit') | |
cmdl_parser.add_option('-v', '--version', action='version', help='print program version and exit') | |
cmdl_parser.add_option('-u', '--username', dest='username', metavar='USERNAME', help='account username') | |
cmdl_parser.add_option('-p', '--password', dest='password', metavar='PASSWORD', help='account password') | |
cmdl_parser.add_option('-o', '--output', dest='outfile', metavar='FILE', help='output video file name') | |
cmdl_parser.add_option('-q', '--quiet', action='store_true', dest='quiet', help='activates quiet mode') | |
cmdl_parser.add_option('-s', '--simulate', action='store_true', dest='simulate', help='do not download video') | |
cmdl_parser.add_option('-t', '--title', action='store_true', dest='use_title', help='use title in file name') | |
cmdl_parser.add_option('-l', '--literal', action='store_true', dest='use_literal', help='use literal title in file name') | |
cmdl_parser.add_option('-n', '--netrc', action='store_true', dest='use_netrc', help='use .netrc authentication data') | |
cmdl_parser.add_option('-g', '--get-url', action='store_true', dest='get_url', help='print final video URL only') | |
cmdl_parser.add_option('-2', '--title-too', action='store_true', dest='get_title', help='used with -g, print title too') | |
cmdl_parser.add_option('-f', '--format', dest='video_format', metavar='FORMAT', help='append &fmt=FORMAT to the URL') | |
cmdl_parser.add_option('-b', '--best-quality', action='store_true', dest='best_quality', help='alias for -f 18') | |
(cmdl_opts, cmdl_args) = cmdl_parser.parse_args() | |
# Set socket timeout | |
socket.setdefaulttimeout(const_timeout) | |
# Get video URL | |
if len(cmdl_args) == 0: | |
cmdl_parser.print_help() | |
sys.exit('\n') | |
# Verify video URL format and convert to "standard" format | |
video_urls = [] | |
for video_url_cmdl in cmdl_args: | |
video_url_mo = const_video_url_re.match(video_url_cmdl) | |
if video_url_mo is None: | |
video_url_mo = const_video_url_re.match(urllib.unquote(video_url_cmdl)) | |
if video_url_mo is None: | |
sys.exit('ERROR: URL does not seem to be a youtube video URL. If it is, report a bug.') | |
video_url_id = video_url_mo.group(2) | |
video_urls.append((const_video_url_str % video_url_id, video_url_id)) | |
video_format = None | |
if cmdl_opts.best_quality: | |
video_format = const_best_quality_format | |
video_extension = '.mp4' | |
else: | |
video_extension = '.flv' | |
if cmdl_opts.video_format is not None: | |
if video_format is not None and video_format != cmdl_opts.video_format: | |
sys.exit('ERROR: conflicting video formats specified\n') | |
video_format = cmdl_opts.video_format | |
if video_format is not None: | |
video_urls = [('%s%s' % (x, const_video_url_format_suffix % video_format), y) for (x, y) in video_urls] | |
# Check conflicting options | |
if cmdl_opts.outfile is not None and (cmdl_opts.simulate or cmdl_opts.get_url): | |
sys.stderr.write('Warning: video file name given but will not be used.\n') | |
if cmdl_opts.outfile is not None and len(video_urls) > 1: | |
sys.exit('ERROR: you cannot specify the output name and give several URLs.') | |
if cmdl_opts.outfile is not None and (cmdl_opts.use_title or cmdl_opts.use_literal): | |
sys.exit('ERROR: using the video title conflicts with using a given file name.') | |
if cmdl_opts.use_title and cmdl_opts.use_literal: | |
sys.exit('ERROR: cannot use title and literal title at the same time.') | |
if cmdl_opts.quiet and cmdl_opts.get_url: |
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