diff options
Diffstat (limited to 'youtube_dl/extractor')
| -rw-r--r-- | youtube_dl/extractor/youtube.py | 757 |
1 files changed, 757 insertions, 0 deletions
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py new file mode 100644 index 000000000..d09128555 --- /dev/null +++ b/youtube_dl/extractor/youtube.py @@ -0,0 +1,757 @@ +# coding: utf-8 +from __future__ import absolute_import + +import json +import netrc +import re +import socket + +from .common import InfoExtractor +from ..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': 'video', # You actually don't know if this will be MOV, AVI or whatever + '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') + + @staticmethod + def _decrypt_signature(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 not valid') + 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() + age_results = 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): + sub_lang_list = 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]) + + # token + video_token = compat_urllib_parse.unquote_plus(video_info['token'][0]) + + # Decide which formats to download + req_format = self._downloader.params.get('format', None) + + try: + mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage) + info = json.loads(mobj.group(1)) + args = info['args'] + if args.get('ptk','') == 'vevo' or 'dashmpd': + # Vevo videos with encrypted signatures + self.to_screen(u'%s: Vevo video 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)] |