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# coding: utf-8
import jsonimport netrcimport reimport socket
from .common import InfoExtractor, SearchInfoExtractorfrom ..utils import ( compat_http_client, compat_parse_qs, compat_urllib_error, compat_urllib_parse, compat_urllib_request, compat_str,
clean_html, get_element_by_id, ExtractorError, unescapeHTML, unified_strdate,)
class YoutubeIE(InfoExtractor): """Information extractor for youtube.com."""
_VALID_URL = r"""^
( (?:https?://)? # http(s):// (optional) (?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/| tube\.majestyc\.net/) # the various hostnames, with wildcard subdomains (?:.*?\#/)? # handle anchor (#/) redirect urls (?: # the various things that can precede the ID: (?:(?:v|embed|e)/) # v/ or embed/ or e/ |(?: # or the v= param in all its forms (?:watch(?:_popup)?(?:\.php)?)? # preceding watch(_popup|.php) or nothing (like /?v=xxxx) (?:\?|\#!?) # the params delimiter ? or # or #! (?:.*?&)? # any other preceding param (like /?s=tuff&v=xxxx) v= ) )? # optional -> youtube.com/xxxx is OK )? # all until now is optional -> you can pass the naked ID ([0-9A-Za-z_-]+) # here is it! the YouTube video ID (?(1).+)? # if we found the ID, everything can follow $"""
_LANG_URL = r'https://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1' _LOGIN_URL = 'https://accounts.google.com/ServiceLogin' _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en' _NEXT_URL_RE = r'[\?&]next_url=([^&]+)' _NETRC_MACHINE = 'youtube' # Listed in order of quality _available_formats = ['38', '37', '46', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13'] _available_formats_prefer_free = ['38', '46', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13'] _video_extensions = { '13': '3gp', '17': 'mp4', '18': 'mp4', '22': 'mp4', '37': 'mp4', '38': 'mp4', '43': 'webm', '44': 'webm', '45': 'webm', '46': 'webm', } _video_dimensions = { '5': '240x400', '6': '???', '13': '???', '17': '144x176', '18': '360x640', '22': '720x1280', '34': '360x640', '35': '480x854', '37': '1080x1920', '38': '3072x4096', '43': '360x640', '44': '480x854', '45': '720x1280', '46': '1080x1920', } IE_NAME = u'youtube'
@classmethod def suitable(cls, url): """Receives a URL and returns True if suitable for this IE.""" if YoutubePlaylistIE.suitable(url): return False return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
def report_lang(self): """Report attempt to set language.""" self.to_screen(u'Setting language')
def report_login(self): """Report attempt to log in.""" self.to_screen(u'Logging in')
def report_video_webpage_download(self, video_id): """Report attempt to download video webpage.""" self.to_screen(u'%s: Downloading video webpage' % video_id)
def report_video_info_webpage_download(self, video_id): """Report attempt to download video info webpage.""" self.to_screen(u'%s: Downloading video info webpage' % video_id)
def report_video_subtitles_download(self, video_id): """Report attempt to download video info webpage.""" self.to_screen(u'%s: Checking available subtitles' % video_id)
def report_video_subtitles_request(self, video_id, sub_lang, format): """Report attempt to download video info webpage.""" self.to_screen(u'%s: Downloading video subtitles for %s.%s' % (video_id, sub_lang, format))
def report_video_subtitles_available(self, video_id, sub_lang_list): """Report available subtitles.""" sub_lang = ",".join(list(sub_lang_list.keys())) self.to_screen(u'%s: Available subtitles for video: %s' % (video_id, sub_lang))
def report_information_extraction(self, video_id): """Report attempt to extract video information.""" self.to_screen(u'%s: Extracting video information' % video_id)
def report_unavailable_format(self, video_id, format): """Report extracted video URL.""" self.to_screen(u'%s: Format %s not available' % (video_id, format))
def report_rtmp_download(self): """Indicate the download will use the RTMP protocol.""" self.to_screen(u'RTMP download detected')
def _decrypt_signature(self, s): """Decrypt the key the two subkeys must have a length of 43""" (a,b) = s.split('.') if len(a) != 43 or len(b) != 43: raise ExtractorError(u'Unable to decrypt signature, subkeys lengths %d.%d not supported; retrying might work' % (len(a), len(b))) if self._downloader.params.get('verbose'): self.to_screen('encrypted signature length %d.%d' % (len(a), len(b))) b = ''.join([b[:8],a[0],b[9:18],b[-4],b[19:39], b[18]])[0:40] a = a[-40:] s_dec = '.'.join((a,b))[::-1] return s_dec
def _get_available_subtitles(self, video_id): self.report_video_subtitles_download(video_id) request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id) try: sub_list = compat_urllib_request.urlopen(request).read().decode('utf-8') except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: return (u'unable to download video subtitles: %s' % compat_str(err), None) sub_lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list) sub_lang_list = dict((l[1], l[0]) for l in sub_lang_list) if not sub_lang_list: return (u'video doesn\'t have subtitles', None) return sub_lang_list
def _list_available_subtitles(self, video_id): sub_lang_list = self._get_available_subtitles(video_id) self.report_video_subtitles_available(video_id, sub_lang_list)
def _request_subtitle(self, sub_lang, sub_name, video_id, format): """
Return tuple: (error_message, sub_lang, sub) """
self.report_video_subtitles_request(video_id, sub_lang, format) params = compat_urllib_parse.urlencode({ 'lang': sub_lang, 'name': sub_name, 'v': video_id, 'fmt': format, }) url = 'http://www.youtube.com/api/timedtext?' + params try: sub = compat_urllib_request.urlopen(url).read().decode('utf-8') except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: return (u'unable to download video subtitles: %s' % compat_str(err), None, None) if not sub: return (u'Did not fetch video subtitles', None, None) return (None, sub_lang, sub)
def _request_automatic_caption(self, video_id, webpage): """We need the webpage for getting the captions url, pass it as an
argument to speed up the process."""
sub_lang = self._downloader.params.get('subtitleslang') or 'en' sub_format = self._downloader.params.get('subtitlesformat') self.to_screen(u'%s: Looking for automatic captions' % video_id) mobj = re.search(r';ytplayer.config = ({.*?});', webpage) err_msg = u'Couldn\'t find automatic captions for "%s"' % sub_lang if mobj is None: return [(err_msg, None, None)] player_config = json.loads(mobj.group(1)) try: args = player_config[u'args'] caption_url = args[u'ttsurl'] timestamp = args[u'timestamp'] params = compat_urllib_parse.urlencode({ 'lang': 'en', 'tlang': sub_lang, 'fmt': sub_format, 'ts': timestamp, 'kind': 'asr', }) subtitles_url = caption_url + '&' + params sub = self._download_webpage(subtitles_url, video_id, u'Downloading automatic captions') return [(None, sub_lang, sub)] except KeyError: return [(err_msg, None, None)]
def _extract_subtitle(self, video_id): """
Return a list with a tuple: [(error_message, sub_lang, sub)] """
sub_lang_list = self._get_available_subtitles(video_id) sub_format = self._downloader.params.get('subtitlesformat') if isinstance(sub_lang_list,tuple): #There was some error, it didn't get the available subtitles return [(sub_lang_list[0], None, None)] if self._downloader.params.get('subtitleslang', False): sub_lang = self._downloader.params.get('subtitleslang') elif 'en' in sub_lang_list: sub_lang = 'en' else: sub_lang = list(sub_lang_list.keys())[0] if not sub_lang in sub_lang_list: return [(u'no closed captions found in the specified language "%s"' % sub_lang, None, None)]
subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format) return [subtitle]
def _extract_all_subtitles(self, video_id): sub_lang_list = self._get_available_subtitles(video_id) sub_format = self._downloader.params.get('subtitlesformat') if isinstance(sub_lang_list,tuple): #There was some error, it didn't get the available subtitles return [(sub_lang_list[0], None, None)] subtitles = [] for sub_lang in sub_lang_list: subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format) subtitles.append(subtitle) return subtitles
def _print_formats(self, formats): print('Available formats:') for x in formats: print('%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'flv'), self._video_dimensions.get(x, '???')))
def _real_initialize(self): if self._downloader is None: return
username = None password = None downloader_params = self._downloader.params
# Attempt to use provided username and password or .netrc data if downloader_params.get('username', None) is not None: username = downloader_params['username'] password = downloader_params['password'] elif downloader_params.get('usenetrc', False): try: info = netrc.netrc().authenticators(self._NETRC_MACHINE) if info is not None: username = info[0] password = info[2] else: raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE) except (IOError, netrc.NetrcParseError) as err: self._downloader.report_warning(u'parsing .netrc: %s' % compat_str(err)) return
# Set language request = compat_urllib_request.Request(self._LANG_URL) try: self.report_lang() compat_urllib_request.urlopen(request).read() except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: self._downloader.report_warning(u'unable to set language: %s' % compat_str(err)) return
# No authentication to be performed if username is None: return
request = compat_urllib_request.Request(self._LOGIN_URL) try: login_page = compat_urllib_request.urlopen(request).read().decode('utf-8') except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: self._downloader.report_warning(u'unable to fetch login page: %s' % compat_str(err)) return
galx = None dsh = None match = re.search(re.compile(r'<input.+?name="GALX".+?value="(.+?)"', re.DOTALL), login_page) if match: galx = match.group(1)
match = re.search(re.compile(r'<input.+?name="dsh".+?value="(.+?)"', re.DOTALL), login_page) if match: dsh = match.group(1)
# Log in login_form_strs = { u'continue': u'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1', u'Email': username, u'GALX': galx, u'Passwd': password, u'PersistentCookie': u'yes', u'_utf8': u'霱', u'bgresponse': u'js_disabled', u'checkConnection': u'', u'checkedDomains': u'youtube', u'dnConn': u'', u'dsh': dsh, u'pstMsg': u'0', u'rmShown': u'1', u'secTok': u'', u'signIn': u'Sign in', u'timeStmp': u'', u'service': u'youtube', u'uilel': u'3', u'hl': u'en_US', } # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode # chokes on unicode login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k,v in login_form_strs.items()) login_data = compat_urllib_parse.urlencode(login_form).encode('ascii') request = compat_urllib_request.Request(self._LOGIN_URL, login_data) try: self.report_login() login_results = compat_urllib_request.urlopen(request).read().decode('utf-8') if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None: self._downloader.report_warning(u'unable to log in: bad username or password') return except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: self._downloader.report_warning(u'unable to log in: %s' % compat_str(err)) return
# Confirm age age_form = { 'next_url': '/', 'action_confirm': 'Confirm', } request = compat_urllib_request.Request(self._AGE_URL, compat_urllib_parse.urlencode(age_form)) try: self.report_age_confirmation() compat_urllib_request.urlopen(request).read().decode('utf-8') except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: raise ExtractorError(u'Unable to confirm age: %s' % compat_str(err))
def _extract_id(self, url): mobj = re.match(self._VALID_URL, url, re.VERBOSE) if mobj is None: raise ExtractorError(u'Invalid URL: %s' % url) video_id = mobj.group(2) return video_id
def _real_extract(self, url): # Extract original video URL from URL with redirection, like age verification, using next_url parameter mobj = re.search(self._NEXT_URL_RE, url) if mobj: url = 'https://www.youtube.com/' + compat_urllib_parse.unquote(mobj.group(1)).lstrip('/') video_id = self._extract_id(url)
# Get video webpage self.report_video_webpage_download(video_id) url = 'https://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1' % video_id request = compat_urllib_request.Request(url) try: video_webpage_bytes = compat_urllib_request.urlopen(request).read() except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: raise ExtractorError(u'Unable to download video webpage: %s' % compat_str(err))
video_webpage = video_webpage_bytes.decode('utf-8', 'ignore')
# Attempt to extract SWF player URL mobj = re.search(r'swfConfig.*?"(http:\\/\\/.*?watch.*?-.*?\.swf)"', video_webpage) if mobj is not None: player_url = re.sub(r'\\(.)', r'\1', mobj.group(1)) else: player_url = None
# Get video info self.report_video_info_webpage_download(video_id) for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']: video_info_url = ('https://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en' % (video_id, el_type)) video_info_webpage = self._download_webpage(video_info_url, video_id, note=False, errnote='unable to download video info webpage') video_info = compat_parse_qs(video_info_webpage) if 'token' in video_info: break if 'token' not in video_info: if 'reason' in video_info: raise ExtractorError(u'YouTube said: %s' % video_info['reason'][0]) else: raise ExtractorError(u'"token" parameter not in video info for unknown reason')
# Check for "rental" videos if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info: raise ExtractorError(u'"rental" videos not supported')
# Start extracting information self.report_information_extraction(video_id)
# uploader if 'author' not in video_info: raise ExtractorError(u'Unable to extract uploader name') video_uploader = compat_urllib_parse.unquote_plus(video_info['author'][0])
# uploader_id video_uploader_id = None mobj = re.search(r'<link itemprop="url" href="http://www.youtube.com/(?:user|channel)/([^"]+)">', video_webpage) if mobj is not None: video_uploader_id = mobj.group(1) else: self._downloader.report_warning(u'unable to extract uploader nickname')
# title if 'title' not in video_info: raise ExtractorError(u'Unable to extract video title') video_title = compat_urllib_parse.unquote_plus(video_info['title'][0])
# thumbnail image if 'thumbnail_url' not in video_info: self._downloader.report_warning(u'unable to extract video thumbnail') video_thumbnail = '' else: # don't panic if we can't find it video_thumbnail = compat_urllib_parse.unquote_plus(video_info['thumbnail_url'][0])
# upload date upload_date = None mobj = re.search(r'id="eow-date.*?>(.*?)</span>', video_webpage, re.DOTALL) if mobj is not None: upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split()) upload_date = unified_strdate(upload_date)
# description video_description = get_element_by_id("eow-description", video_webpage) if video_description: video_description = clean_html(video_description) else: fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage) if fd_mobj: video_description = unescapeHTML(fd_mobj.group(1)) else: video_description = u''
# subtitles video_subtitles = None
if self._downloader.params.get('writesubtitles', False): video_subtitles = self._extract_subtitle(video_id) if video_subtitles: (sub_error, sub_lang, sub) = video_subtitles[0] if sub_error: # We try with the automatic captions video_subtitles = self._request_automatic_caption(video_id, video_webpage) (sub_error_auto, sub_lang, sub) = video_subtitles[0] if sub is not None: pass else: # We report the original error self._downloader.report_warning(sub_error)
if self._downloader.params.get('allsubtitles', False): video_subtitles = self._extract_all_subtitles(video_id) for video_subtitle in video_subtitles: (sub_error, sub_lang, sub) = video_subtitle if sub_error: self._downloader.report_warning(sub_error)
if self._downloader.params.get('listsubtitles', False): self._list_available_subtitles(video_id) return
if 'length_seconds' not in video_info: self._downloader.report_warning(u'unable to extract video duration') video_duration = '' else: video_duration = compat_urllib_parse.unquote_plus(video_info['length_seconds'][0])
# Decide which formats to download req_format = self._downloader.params.get('format', None)
try: mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage) if not mobj: raise ValueError('Could not find vevo ID') info = json.loads(mobj.group(1)) args = info['args'] # Easy way to know if the 's' value is in url_encoded_fmt_stream_map # this signatures are encrypted m_s = re.search(r'[&,]s=', args['url_encoded_fmt_stream_map']) if m_s is not None: self.to_screen(u'%s: Encrypted signatures detected.' % video_id) video_info['url_encoded_fmt_stream_map'] = [args['url_encoded_fmt_stream_map']] except ValueError: pass
if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'): self.report_rtmp_download() video_url_list = [(None, video_info['conn'][0])] elif 'url_encoded_fmt_stream_map' in video_info and len(video_info['url_encoded_fmt_stream_map']) >= 1: url_map = {} for url_data_str in video_info['url_encoded_fmt_stream_map'][0].split(','): url_data = compat_parse_qs(url_data_str) if 'itag' in url_data and 'url' in url_data: url = url_data['url'][0] if 'sig' in url_data: url += '&signature=' + url_data['sig'][0] elif 's' in url_data: signature = self._decrypt_signature(url_data['s'][0]) url += '&signature=' + signature if 'ratebypass' not in url: url += '&ratebypass=yes' url_map[url_data['itag'][0]] = url
format_limit = self._downloader.params.get('format_limit', None) available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats if format_limit is not None and format_limit in available_formats: format_list = available_formats[available_formats.index(format_limit):] else: format_list = available_formats existing_formats = [x for x in format_list if x in url_map] if len(existing_formats) == 0: raise ExtractorError(u'no known formats available for video') if self._downloader.params.get('listformats', None): self._print_formats(existing_formats) return if req_format is None or req_format == 'best': video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality elif req_format == 'worst': video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality elif req_format in ('-1', 'all'): video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats else: # Specific formats. We pick the first in a slash-delimeted sequence. # For example, if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'. req_formats = req_format.split('/') video_url_list = None for rf in req_formats: if rf in url_map: video_url_list = [(rf, url_map[rf])] break if video_url_list is None: raise ExtractorError(u'requested format not available') else: raise ExtractorError(u'no conn or url_encoded_fmt_stream_map information found in video info')
results = [] for format_param, video_real_url in video_url_list: # Extension video_extension = self._video_extensions.get(format_param, 'flv')
video_format = '{0} - {1}'.format(format_param if format_param else video_extension, self._video_dimensions.get(format_param, '???'))
results.append({ 'id': video_id, 'url': video_real_url, 'uploader': video_uploader, 'uploader_id': video_uploader_id, 'upload_date': upload_date, 'title': video_title, 'ext': video_extension, 'format': video_format, 'thumbnail': video_thumbnail, 'description': video_description, 'player_url': player_url, 'subtitles': video_subtitles, 'duration': video_duration }) return results
class YoutubePlaylistIE(InfoExtractor): """Information Extractor for YouTube playlists."""
_VALID_URL = r"""(?:
(?:https?://)? (?:\w+\.)? youtube\.com/ (?: (?:course|view_play_list|my_playlists|artist|playlist|watch) \? (?:.*?&)*? (?:p|a|list)= | p/ ) ((?:PL|EC|UU)?[0-9A-Za-z-_]{10,}) .* | ((?:PL|EC|UU)[0-9A-Za-z-_]{10,}) )"""
_TEMPLATE_URL = 'https://gdata.youtube.com/feeds/api/playlists/%s?max-results=%i&start-index=%i&v=2&alt=json&safeSearch=none' _MAX_RESULTS = 50 IE_NAME = u'youtube:playlist'
@classmethod def suitable(cls, url): """Receives a URL and returns True if suitable for this IE.""" return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
def _real_extract(self, url): # Extract playlist id mobj = re.match(self._VALID_URL, url, re.VERBOSE) if mobj is None: raise ExtractorError(u'Invalid URL: %s' % url)
# Download playlist videos from API playlist_id = mobj.group(1) or mobj.group(2) page_num = 1 videos = []
while True: url = self._TEMPLATE_URL % (playlist_id, self._MAX_RESULTS, self._MAX_RESULTS * (page_num - 1) + 1) page = self._download_webpage(url, playlist_id, u'Downloading page #%s' % page_num)
try: response = json.loads(page) except ValueError as err: raise ExtractorError(u'Invalid JSON in API response: ' + compat_str(err))
if 'feed' not in response: raise ExtractorError(u'Got a malformed response from YouTube API') playlist_title = response['feed']['title']['$t'] if 'entry' not in response['feed']: # Number of videos is a multiple of self._MAX_RESULTS break
for entry in response['feed']['entry']: index = entry['yt$position']['$t'] if 'media$group' in entry and 'media$player' in entry['media$group']: videos.append((index, entry['media$group']['media$player']['url']))
if len(response['feed']['entry']) < self._MAX_RESULTS: break page_num += 1
videos = [v[1] for v in sorted(videos)]
url_results = [self.url_result(url, 'Youtube') for url in videos] return [self.playlist_result(url_results, playlist_id, playlist_title)]
class YoutubeChannelIE(InfoExtractor): """Information Extractor for YouTube channels."""
_VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)" _TEMPLATE_URL = 'http://www.youtube.com/channel/%s/videos?sort=da&flow=list&view=0&page=%s&gl=US&hl=en' _MORE_PAGES_INDICATOR = 'yt-uix-load-more' _MORE_PAGES_URL = 'http://www.youtube.com/channel_ajax?action_load_more_videos=1&flow=list&paging=%s&view=0&sort=da&channel_id=%s' IE_NAME = u'youtube:channel'
def extract_videos_from_page(self, page): ids_in_page = [] for mobj in re.finditer(r'href="/watch\?v=([0-9A-Za-z_-]+)&?', page): if mobj.group(1) not in ids_in_page: ids_in_page.append(mobj.group(1)) return ids_in_page
def _real_extract(self, url): # Extract channel id mobj = re.match(self._VALID_URL, url) if mobj is None: raise ExtractorError(u'Invalid URL: %s' % url)
# Download channel page channel_id = mobj.group(1) video_ids = [] pagenum = 1
url = self._TEMPLATE_URL % (channel_id, pagenum) page = self._download_webpage(url, channel_id, u'Downloading page #%s' % pagenum)
# Extract video identifiers ids_in_page = self.extract_videos_from_page(page) video_ids.extend(ids_in_page)
# Download any subsequent channel pages using the json-based channel_ajax query if self._MORE_PAGES_INDICATOR in page: while True: pagenum = pagenum + 1
url = self._MORE_PAGES_URL % (pagenum, channel_id) page = self._download_webpage(url, channel_id, u'Downloading page #%s' % pagenum)
page = json.loads(page)
ids_in_page = self.extract_videos_from_page(page['content_html']) video_ids.extend(ids_in_page)
if self._MORE_PAGES_INDICATOR not in page['load_more_widget_html']: break
self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
urls = ['http://www.youtube.com/watch?v=%s' % id for id in video_ids] url_entries = [self.url_result(url, 'Youtube') for url in urls] return [self.playlist_result(url_entries, channel_id)]
class YoutubeUserIE(InfoExtractor): """Information Extractor for YouTube users."""
_VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/user/)|ytuser:)([A-Za-z0-9_-]+)' _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s' _GDATA_PAGE_SIZE = 50 _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d' _VIDEO_INDICATOR = r'/watch\?v=(.+?)[\<&]' IE_NAME = u'youtube:user'
def _real_extract(self, url): # Extract username mobj = re.match(self._VALID_URL, url) if mobj is None: raise ExtractorError(u'Invalid URL: %s' % url)
username = mobj.group(1)
# Download video ids using YouTube Data API. Result size per # query is limited (currently to 50 videos) so we need to query # page by page until there are no video ids - it means we got # all of them.
video_ids = [] pagenum = 0
while True: start_index = pagenum * self._GDATA_PAGE_SIZE + 1
gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index) page = self._download_webpage(gdata_url, username, u'Downloading video ids from %d to %d' % (start_index, start_index + self._GDATA_PAGE_SIZE))
# Extract video identifiers ids_in_page = []
for mobj in re.finditer(self._VIDEO_INDICATOR, page): if mobj.group(1) not in ids_in_page: ids_in_page.append(mobj.group(1))
video_ids.extend(ids_in_page)
# A little optimization - if current page is not # "full", ie. does not contain PAGE_SIZE video ids then # we can assume that this page is the last one - there # are no more ids on further pages - no need to query # again.
if len(ids_in_page) < self._GDATA_PAGE_SIZE: break
pagenum += 1
urls = ['http://www.youtube.com/watch?v=%s' % video_id for video_id in video_ids] url_results = [self.url_result(url, 'Youtube') for url in urls] return [self.playlist_result(url_results, playlist_title = username)]
class YoutubeSearchIE(SearchInfoExtractor): """Information Extractor for YouTube search queries.""" _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc' _MAX_RESULTS = 1000 IE_NAME = u'youtube:search' _SEARCH_KEY = 'ytsearch'
def report_download_page(self, query, pagenum): """Report attempt to download search page with given number.""" self._downloader.to_screen(u'[youtube] query "%s": Downloading page %s' % (query, pagenum))
def _get_n_results(self, query, n): """Get a specified number of results for a query"""
video_ids = [] pagenum = 0 limit = n
while (50 * pagenum) < limit: self.report_download_page(query, pagenum+1) result_url = self._API_URL % (compat_urllib_parse.quote_plus(query), (50*pagenum)+1) request = compat_urllib_request.Request(result_url) try: data = compat_urllib_request.urlopen(request).read().decode('utf-8') except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err: raise ExtractorError(u'Unable to download API page: %s' % compat_str(err)) api_response = json.loads(data)['data']
if not 'items' in api_response: raise ExtractorError(u'[youtube] No video results')
new_ids = list(video['id'] for video in api_response['items']) video_ids += new_ids
limit = min(n, api_response['totalItems']) pagenum += 1
if len(video_ids) > n: video_ids = video_ids[:n] videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids] return self.playlist_result(videos, query)
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