Support more than 100 videos for justin.tv
[youtube-dl] / youtube_dl / InfoExtractors.py
old mode 100644 (file)
new mode 100755 (executable)
index d1b239a..e5118a7
@@ -1,6 +1,8 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+from __future__ import absolute_import
+
 import datetime
 import netrc
 import os
@@ -12,7 +14,7 @@ import xml.etree.ElementTree
 import random
 import math
 
-from utils import *
+from .utils import *
 
 
 class InfoExtractor(object):
@@ -484,8 +486,8 @@ class YoutubeIE(InfoExtractor):
             # Extension
             video_extension = self._video_extensions.get(format_param, 'flv')
 
-            video_format = '{} - {}'.format(format_param if format_param else video_extension,
-                                            self._video_dimensions.get(format_param, '???'))
+            video_format = '{0} - {1}'.format(format_param if format_param else video_extension,
+                                              self._video_dimensions.get(format_param, '???'))
 
             results.append({
                 'id':       video_id,
@@ -664,7 +666,8 @@ class DailymotionIE(InfoExtractor):
         request.add_header('Cookie', 'family_filter=off')
         try:
             self.report_download_webpage(video_id)
-            webpage = compat_urllib_request.urlopen(request).read()
+            webpage_bytes = compat_urllib_request.urlopen(request).read()
+            webpage = webpage_bytes.decode('utf-8')
         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
             self._downloader.trouble(u'ERROR: unable retrieve video webpage: %s' % compat_str(err))
             return
@@ -699,7 +702,7 @@ class DailymotionIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: unable to extract title')
             return
-        video_title = unescapeHTML(mobj.group('title').decode('utf-8'))
+        video_title = unescapeHTML(mobj.group('title'))
 
         video_uploader = None
         mobj = re.search(r'(?im)<span class="owner[^\"]+?">[^<]+?<a [^>]+?>([^<]+?)</a>', webpage)
@@ -719,12 +722,12 @@ class DailymotionIE(InfoExtractor):
             video_upload_date = mobj.group(3) + mobj.group(2) + mobj.group(1)
 
         return [{
-            'id':       video_id.decode('utf-8'),
-            'url':      video_url.decode('utf-8'),
-            'uploader': video_uploader.decode('utf-8'),
+            'id':       video_id,
+            'url':      video_url,
+            'uploader': video_uploader,
             'upload_date':  video_upload_date,
             'title':    video_title,
-            'ext':      video_extension.decode('utf-8'),
+            'ext':      video_extension,
         }]
 
 
@@ -1059,7 +1062,8 @@ class VimeoIE(InfoExtractor):
         request = compat_urllib_request.Request(url, None, std_headers)
         try:
             self.report_download_webpage(video_id)
-            webpage = compat_urllib_request.urlopen(request).read()
+            webpage_bytes = compat_urllib_request.urlopen(request).read()
+            webpage = webpage_bytes.decode('utf-8')
         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
             self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % compat_str(err))
             return
@@ -1070,8 +1074,8 @@ class VimeoIE(InfoExtractor):
         self.report_extraction(video_id)
 
         # Extract the config JSON
-        config = webpage.split(' = {config:')[1].split(',assets:')[0]
         try:
+            config = webpage.split(' = {config:')[1].split(',assets:')[0]
             config = json.loads(config)
         except:
             self._downloader.trouble(u'ERROR: unable to extract info section')
@@ -1087,7 +1091,7 @@ class VimeoIE(InfoExtractor):
         video_thumbnail = config["video"]["thumbnail"]
 
         # Extract video description
-        video_description = get_element_by_id("description", webpage.decode('utf8'))
+        video_description = get_element_by_id("description", webpage)
         if video_description: video_description = clean_html(video_description)
         else: video_description = ''
 
@@ -1405,22 +1409,22 @@ class GenericIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: unable to extract title')
             return
-        video_title = mobj.group(1).decode('utf-8')
+        video_title = mobj.group(1)
 
         # video uploader is domain name
         mobj = re.match(r'(?:https?://)?([^/]*)/.*', url)
         if mobj is None:
             self._downloader.trouble(u'ERROR: unable to extract title')
             return
-        video_uploader = mobj.group(1).decode('utf-8')
+        video_uploader = mobj.group(1)
 
         return [{
-            'id':       video_id.decode('utf-8'),
-            'url':      video_url.decode('utf-8'),
+            'id':       video_id,
+            'url':      video_url,
             'uploader': video_uploader,
             'upload_date':  None,
             'title':    video_title,
-            'ext':      video_extension.decode('utf-8'),
+            'ext':      video_extension,
         }]
 
 
@@ -1669,10 +1673,10 @@ class YahooSearchIE(InfoExtractor):
 class YoutubePlaylistIE(InfoExtractor):
     """Information Extractor for YouTube playlists."""
 
-    _VALID_URL = r'(?:(?:https?://)?(?:\w+\.)?youtube\.com/(?:(?:course|view_play_list|my_playlists|artist|playlist)\?.*?(p|a|list)=|user/.*?/user/|p/|user/.*?#[pg]/c/)(?:PL|EC)?|PL|EC)([0-9A-Za-z-_]+)(?:/.*?/([0-9A-Za-z_-]+))?.*'
+    _VALID_URL = r'(?:(?:https?://)?(?:\w+\.)?youtube\.com/(?:(?:course|view_play_list|my_playlists|artist|playlist)\?.*?(p|a|list)=|user/.*?/user/|p/|user/.*?#[pg]/c/)(?:PL|EC)?|PL|EC)([0-9A-Za-z-_]{10,})(?:/.*?/([0-9A-Za-z_-]+))?.*'
     _TEMPLATE_URL = 'http://www.youtube.com/%s?%s=%s&page=%s&gl=US&hl=en'
     _VIDEO_INDICATOR_TEMPLATE = r'/watch\?v=(.+?)&amp;([^&"]+&amp;)*list=.*?%s'
-    _MORE_PAGES_INDICATOR = r'yt-uix-pager-next'
+    _MORE_PAGES_INDICATOR = u"Next \N{RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK}"
     IE_NAME = u'youtube:playlist'
 
     def __init__(self, downloader=None):
@@ -1711,7 +1715,7 @@ class YoutubePlaylistIE(InfoExtractor):
             url = self._TEMPLATE_URL % (playlist_access, playlist_prefix, playlist_id, pagenum)
             request = compat_urllib_request.Request(url)
             try:
-                page = compat_urllib_request.urlopen(request).read()
+                page = compat_urllib_request.urlopen(request).read().decode('utf8')
             except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
                 self._downloader.trouble(u'ERROR: unable to download webpage: %s' % compat_str(err))
                 return
@@ -1723,10 +1727,12 @@ class YoutubePlaylistIE(InfoExtractor):
                     ids_in_page.append(mobj.group(1))
             video_ids.extend(ids_in_page)
 
-            if re.search(self._MORE_PAGES_INDICATOR, page) is None:
+            if self._MORE_PAGES_INDICATOR not in page:
                 break
             pagenum = pagenum + 1
 
+        total = len(video_ids)
+
         playliststart = self._downloader.params.get('playliststart', 1) - 1
         playlistend = self._downloader.params.get('playlistend', -1)
         if playlistend == -1:
@@ -1734,6 +1740,11 @@ class YoutubePlaylistIE(InfoExtractor):
         else:
             video_ids = video_ids[playliststart:playlistend]
 
+        if len(video_ids) == total:
+            self._downloader.to_screen(u'[youtube] PL %s: Found %i videos' % (playlist_id, total))
+        else:
+            self._downloader.to_screen(u'[youtube] PL %s: Found %i videos, downloading %i' % (playlist_id, total, len(video_ids)))
+
         for id in video_ids:
             self._downloader.download(['http://www.youtube.com/watch?v=%s' % id])
         return
@@ -1744,7 +1755,7 @@ class YoutubeChannelIE(InfoExtractor):
 
     _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 = r'yt-uix-button-content">Next' # TODO
+    _MORE_PAGES_INDICATOR = u"Next \N{RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK}"
     IE_NAME = u'youtube:channel'
 
     def report_download_page(self, channel_id, pagenum):
@@ -1768,7 +1779,7 @@ class YoutubeChannelIE(InfoExtractor):
             url = self._TEMPLATE_URL % (channel_id, pagenum)
             request = compat_urllib_request.Request(url)
             try:
-                page = compat_urllib_request.urlopen(request).read()
+                page = compat_urllib_request.urlopen(request).read().decode('utf8')
             except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
                 self._downloader.trouble(u'ERROR: unable to download webpage: %s' % compat_str(err))
                 return
@@ -1780,10 +1791,12 @@ class YoutubeChannelIE(InfoExtractor):
                     ids_in_page.append(mobj.group(1))
             video_ids.extend(ids_in_page)
 
-            if re.search(self._MORE_PAGES_INDICATOR, page) is None:
+            if self._MORE_PAGES_INDICATOR not in page:
                 break
             pagenum = pagenum + 1
 
+        self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
+
         for id in video_ids:
             self._downloader.download(['http://www.youtube.com/watch?v=%s' % id])
         return
@@ -2260,7 +2273,7 @@ class BlipTVIE(InfoExtractor):
         else:
             cchar = '?'
         json_url = url + cchar + 'skin=json&version=2&no_wrap=1'
-        request = compat_urllib_request.Request(json_url.encode('utf-8'))
+        request = compat_urllib_request.Request(json_url)
         self.report_extraction(mobj.group(1))
         info = None
         try:
@@ -2285,7 +2298,8 @@ class BlipTVIE(InfoExtractor):
             return
         if info is None: # Regular URL
             try:
-                json_code = urlh.read()
+                json_code_bytes = urlh.read()
+                json_code = json_code_bytes.decode('utf-8')
             except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
                 self._downloader.trouble(u'ERROR: unable to read video info webpage: %s' % compat_str(err))
                 return
@@ -2385,7 +2399,19 @@ class MyVideoIE(InfoExtractor):
 class ComedyCentralIE(InfoExtractor):
     """Information extractor for The Daily Show and Colbert Report """
 
-    _VALID_URL = r'^(:(?P<shortname>tds|thedailyshow|cr|colbert|colbertnation|colbertreport))|(https?://)?(www\.)?(?P<showname>thedailyshow|colbertnation)\.com/full-episodes/(?P<episode>.*)$'
+    # urls can be abbreviations like :thedailyshow or :colbert
+    # urls for episodes like: 
+    # or urls for clips like: http://www.thedailyshow.com/watch/mon-december-10-2012/any-given-gun-day
+    #                     or: http://www.colbertnation.com/the-colbert-report-videos/421667/november-29-2012/moon-shattering-news
+    #                     or: http://www.colbertnation.com/the-colbert-report-collections/422008/festival-of-lights/79524    
+    _VALID_URL = r"""^(:(?P<shortname>tds|thedailyshow|cr|colbert|colbertnation|colbertreport)
+                      |(https?://)?(www\.)?
+                          (?P<showname>thedailyshow|colbertnation)\.com/
+                         (full-episodes/(?P<episode>.*)|
+                          (?P<clip>
+                              (the-colbert-report-(videos|collections)/(?P<clipID>[0-9]+)/[^/]*/(?P<cntitle>.*?))
+                              |(watch/(?P<date>[^/]*)/(?P<tdstitle>.*)))))
+                     $"""                        
     IE_NAME = u'comedycentral'
 
     _available_formats = ['3500', '2200', '1700', '1200', '750', '400']
@@ -2407,6 +2433,10 @@ class ComedyCentralIE(InfoExtractor):
         '400': '384x216',
     }
 
+    def suitable(self, url):
+        """Receives a URL and returns True if suitable for this IE."""
+        return re.match(self._VALID_URL, url, re.VERBOSE) is not None
+
     def report_extraction(self, episode_id):
         self._downloader.to_screen(u'[comedycentral] %s: Extracting information' % episode_id)
 
@@ -2427,7 +2457,7 @@ class ComedyCentralIE(InfoExtractor):
 
 
     def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
+        mobj = re.match(self._VALID_URL, url, re.VERBOSE)
         if mobj is None:
             self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
             return
@@ -2437,14 +2467,21 @@ class ComedyCentralIE(InfoExtractor):
                 url = u'http://www.thedailyshow.com/full-episodes/'
             else:
                 url = u'http://www.colbertnation.com/full-episodes/'
-            mobj = re.match(self._VALID_URL, url)
+            mobj = re.match(self._VALID_URL, url, re.VERBOSE)
             assert mobj is not None
 
-        dlNewest = not mobj.group('episode')
-        if dlNewest:
-            epTitle = mobj.group('showname')
+        if mobj.group('clip'):
+            if mobj.group('showname') == 'thedailyshow':
+                epTitle = mobj.group('tdstitle')
+            else:
+                epTitle = mobj.group('cntitle')
+            dlNewest = False
         else:
-            epTitle = mobj.group('episode')
+            dlNewest = not mobj.group('episode')
+            if dlNewest:
+                epTitle = mobj.group('showname')
+            else:
+                epTitle = mobj.group('episode')
 
         req = compat_urllib_request.Request(url)
         self.report_extraction(epTitle)
@@ -2456,7 +2493,7 @@ class ComedyCentralIE(InfoExtractor):
             return
         if dlNewest:
             url = htmlHandle.geturl()
-            mobj = re.match(self._VALID_URL, url)
+            mobj = re.match(self._VALID_URL, url, re.VERBOSE)
             if mobj is None:
                 self._downloader.trouble(u'ERROR: Invalid redirected URL: ' + url)
                 return
@@ -2465,14 +2502,14 @@ class ComedyCentralIE(InfoExtractor):
                 return
             epTitle = mobj.group('episode')
 
-        mMovieParams = re.findall('(?:<param name="movie" value="|var url = ")(http://media.mtvnservices.com/([^"]*episode.*?:.*?))"', html)
+        mMovieParams = re.findall('(?:<param name="movie" value="|var url = ")(http://media.mtvnservices.com/([^"]*(?:episode|video).*?:.*?))"', html)
 
         if len(mMovieParams) == 0:
             # The Colbert Report embeds the information in a without
             # a URL prefix; so extract the alternate reference
             # and then add the URL prefix manually.
 
-            altMovieParams = re.findall('data-mgid="([^"]*episode.*?:.*?)"', html)
+            altMovieParams = re.findall('data-mgid="([^"]*(?:episode|video).*?:.*?)"', html)
             if len(altMovieParams) == 0:
                 self._downloader.trouble(u'ERROR: unable to find Flash URL in webpage ' + url)
                 return
@@ -2647,12 +2684,13 @@ class EscapistIE(InfoExtractor):
 class CollegeHumorIE(InfoExtractor):
     """Information extractor for collegehumor.com"""
 
+    _WORKING = False
     _VALID_URL = r'^(?:https?://)?(?:www\.)?collegehumor\.com/video/(?P<videoid>[0-9]+)/(?P<shorttitle>.*)$'
     IE_NAME = u'collegehumor'
 
-    def report_webpage(self, video_id):
+    def report_manifest(self, video_id):
         """Report information extraction."""
-        self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
+        self._downloader.to_screen(u'[%s] %s: Downloading XML manifest' % (self.IE_NAME, video_id))
 
     def report_extraction(self, video_id):
         """Report information extraction."""
@@ -2665,29 +2703,14 @@ class CollegeHumorIE(InfoExtractor):
             return
         video_id = mobj.group('videoid')
 
-        self.report_webpage(video_id)
-        request = compat_urllib_request.Request(url)
-        try:
-            webpage = compat_urllib_request.urlopen(request).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % compat_str(err))
-            return
-
-        m = re.search(r'id="video:(?P<internalvideoid>[0-9]+)"', webpage)
-        if m is None:
-            self._downloader.trouble(u'ERROR: Cannot extract internal video ID')
-            return
-        internal_video_id = m.group('internalvideoid')
-
         info = {
             'id': video_id,
-            'internal_id': internal_video_id,
             'uploader': None,
             'upload_date': None,
         }
 
         self.report_extraction(video_id)
-        xmlUrl = 'http://www.collegehumor.com/moogaloop/video:' + internal_video_id
+        xmlUrl = 'http://www.collegehumor.com/moogaloop/video/' + video_id
         try:
             metaXml = compat_urllib_request.urlopen(xmlUrl).read()
         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
@@ -2699,13 +2722,34 @@ class CollegeHumorIE(InfoExtractor):
             videoNode = mdoc.findall('./video')[0]
             info['description'] = videoNode.findall('./description')[0].text
             info['title'] = videoNode.findall('./caption')[0].text
-            info['url'] = videoNode.findall('./file')[0].text
             info['thumbnail'] = videoNode.findall('./thumbnail')[0].text
-            info['ext'] = info['url'].rpartition('.')[2]
+            manifest_url = videoNode.findall('./file')[0].text
         except IndexError:
             self._downloader.trouble(u'\nERROR: Invalid metadata XML file')
             return
 
+        manifest_url += '?hdcore=2.10.3'
+        self.report_manifest(video_id)
+        try:
+            manifestXml = compat_urllib_request.urlopen(manifest_url).read()
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % compat_str(err))
+            return
+
+        adoc = xml.etree.ElementTree.fromstring(manifestXml)
+        try:
+            media_node = adoc.findall('./{http://ns.adobe.com/f4m/1.0}media')[0]
+            node_id = media_node.attrib['url']
+            video_id = adoc.findall('./{http://ns.adobe.com/f4m/1.0}id')[0].text
+        except IndexError as err:
+            self._downloader.trouble(u'\nERROR: Invalid manifest file')
+            return
+
+        url_pr = compat_urllib_parse_urlparse(manifest_url)
+        url = url_pr.scheme + '://' + url_pr.netloc + '/z' + video_id[:-2] + '/' + node_id + 'Seg1-Frag1'
+
+        info['url'] = url
+        info['ext'] = 'f4f'
         return [info]
 
 
@@ -2728,13 +2772,14 @@ class XVideosIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
             return
-        video_id = mobj.group(1).decode('utf-8')
+        video_id = mobj.group(1)
 
         self.report_webpage(video_id)
 
         request = compat_urllib_request.Request(r'http://www.xvideos.com/video' + video_id)
         try:
-            webpage = compat_urllib_request.urlopen(request).read()
+            webpage_bytes = compat_urllib_request.urlopen(request).read()
+            webpage = webpage_bytes.decode('utf-8', 'replace')
         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
             self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % compat_str(err))
             return
@@ -2747,7 +2792,7 @@ class XVideosIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: unable to extract video url')
             return
-        video_url = compat_urllib_parse.unquote(mobj.group(1).decode('utf-8'))
+        video_url = compat_urllib_parse.unquote(mobj.group(1))
 
 
         # Extract title
@@ -2755,7 +2800,7 @@ class XVideosIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: unable to extract video title')
             return
-        video_title = mobj.group(1).decode('utf-8')
+        video_title = mobj.group(1)
 
 
         # Extract video thumbnail
@@ -2763,7 +2808,7 @@ class XVideosIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
             return
-        video_thumbnail = mobj.group(0).decode('utf-8')
+        video_thumbnail = mobj.group(0)
 
         info = {
             'id': video_id,
@@ -2794,13 +2839,13 @@ class SoundcloudIE(InfoExtractor):
     def __init__(self, downloader=None):
         InfoExtractor.__init__(self, downloader)
 
-    def report_webpage(self, video_id):
+    def report_resolve(self, video_id):
         """Report information extraction."""
-        self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
+        self._downloader.to_screen(u'[%s] %s: Resolving id' % (self.IE_NAME, video_id))
 
     def report_extraction(self, video_id):
         """Report information extraction."""
-        self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+        self._downloader.to_screen(u'[%s] %s: Retrieving stream' % (self.IE_NAME, video_id))
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
@@ -2809,65 +2854,47 @@ class SoundcloudIE(InfoExtractor):
             return
 
         # extract uploader (which is in the url)
-        uploader = mobj.group(1).decode('utf-8')
+        uploader = mobj.group(1)
         # extract simple title (uploader + slug of song title)
-        slug_title =  mobj.group(2).decode('utf-8')
+        slug_title =  mobj.group(2)
         simple_title = uploader + u'-' + slug_title
 
-        self.report_webpage('%s/%s' % (uploader, slug_title))
+        self.report_resolve('%s/%s' % (uploader, slug_title))
 
-        request = compat_urllib_request.Request('http://soundcloud.com/%s/%s' % (uploader, slug_title))
+        url = 'http://soundcloud.com/%s/%s' % (uploader, slug_title)
+        resolv_url = 'http://api.soundcloud.com/resolve.json?url=' + url + '&client_id=b45b1aa10f1ac2941910a7f0d10f8e28'
+        request = compat_urllib_request.Request(resolv_url)
         try:
-            webpage = compat_urllib_request.urlopen(request).read()
+            info_json_bytes = compat_urllib_request.urlopen(request).read()
+            info_json = info_json_bytes.decode('utf-8')
         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
             self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % compat_str(err))
             return
 
+        info = json.loads(info_json)
+        video_id = info['id']
         self.report_extraction('%s/%s' % (uploader, slug_title))
 
-        # extract uid and stream token that soundcloud hands out for access
-        mobj = re.search('"uid":"([\w\d]+?)".*?stream_token=([\w\d]+)', webpage)
-        if mobj:
-            video_id = mobj.group(1)
-            stream_token = mobj.group(2)
-
-        # extract unsimplified title
-        mobj = re.search('"title":"(.*?)",', webpage)
-        if mobj:
-            title = mobj.group(1).decode('utf-8')
-        else:
-            title = simple_title
-
-        # construct media url (with uid/token)
-        mediaURL = "http://media.soundcloud.com/stream/%s?stream_token=%s"
-        mediaURL = mediaURL % (video_id, stream_token)
-
-        # description
-        description = u'No description available'
-        mobj = re.search('track-description-value"><p>(.*?)</p>', webpage)
-        if mobj:
-            description = mobj.group(1)
-
-        # upload date
-        upload_date = None
-        mobj = re.search("pretty-date'>on ([\w]+ [\d]+, [\d]+ \d+:\d+)</abbr></h2>", webpage)
-        if mobj:
-            try:
-                upload_date = datetime.datetime.strptime(mobj.group(1), '%B %d, %Y %H:%M').strftime('%Y%m%d')
-            except Exception as err:
-                self._downloader.to_stderr(compat_str(err))
+        streams_url = 'https://api.sndcdn.com/i1/tracks/' + str(video_id) + '/streams?client_id=b45b1aa10f1ac2941910a7f0d10f8e28'
+        request = compat_urllib_request.Request(streams_url)
+        try:
+            stream_json_bytes = compat_urllib_request.urlopen(request).read()
+            stream_json = stream_json_bytes.decode('utf-8')
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % compat_str(err))
+            return
 
-        # for soundcloud, a request to a cross domain is required for cookies
-        request = compat_urllib_request.Request('http://media.soundcloud.com/crossdomain.xml', std_headers)
+        streams = json.loads(stream_json)
+        mediaURL = streams['http_mp3_128_url']
 
         return [{
-            'id':       video_id.decode('utf-8'),
+            'id':       info['id'],
             'url':      mediaURL,
-            'uploader': uploader.decode('utf-8'),
-            'upload_date':  upload_date,
-            'title':    title,
+            'uploader': info['user']['username'],
+            'upload_date':  info['created_at'],
+            'title':    info['title'],
             'ext':      u'mp3',
-            'description': description.decode('utf-8')
+            'description': info['description'],
         }]
 
 
@@ -3324,7 +3351,8 @@ class YoukuIE(InfoExtractor):
 
         self.report_extraction(video_id)
         try:
-            config = json.loads(jsondata)
+            jsonstr = jsondata.decode('utf-8')
+            config = json.loads(jsonstr)
 
             video_title =  config['data'][0]['title']
             seed = config['data'][0]['seed']
@@ -3347,15 +3375,8 @@ class YoukuIE(InfoExtractor):
 
 
             fileid = config['data'][0]['streamfileids'][format]
-            seg_number = len(config['data'][0]['segs'][format])
-
-            keys=[]
-            for i in xrange(seg_number):
-                keys.append(config['data'][0]['segs'][format][i]['k'])
-
-            #TODO check error
-            #youku only could be viewed from mainland china
-        except:
+            keys = [s['k'] for s in config['data'][0]['segs'][format]]
+        except (UnicodeDecodeError, ValueError, KeyError):
             self._downloader.trouble(u'ERROR: unable to extract info section')
             return
 
@@ -3405,13 +3426,14 @@ class XNXXIE(InfoExtractor):
         if mobj is None:
             self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
             return
-        video_id = mobj.group(1).decode('utf-8')
+        video_id = mobj.group(1)
 
         self.report_webpage(video_id)
 
         # Get webpage content
         try:
-            webpage = compat_urllib_request.urlopen(url).read()
+            webpage_bytes = compat_urllib_request.urlopen(url).read()
+            webpage = webpage_bytes.decode('utf-8')
         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
             self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % err)
             return
@@ -3420,19 +3442,19 @@ class XNXXIE(InfoExtractor):
         if result is None:
             self._downloader.trouble(u'ERROR: unable to extract video url')
             return
-        video_url = compat_urllib_parse.unquote(result.group(1).decode('utf-8'))
+        video_url = compat_urllib_parse.unquote(result.group(1))
 
         result = re.search(self.VIDEO_TITLE_RE, webpage)
         if result is None:
             self._downloader.trouble(u'ERROR: unable to extract video title')
             return
-        video_title = result.group(1).decode('utf-8')
+        video_title = result.group(1)
 
         result = re.search(self.VIDEO_THUMB_RE, webpage)
         if result is None:
             self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
             return
-        video_thumbnail = result.group(1).decode('utf-8')
+        video_thumbnail = result.group(1)
 
         return [{
             'id': video_id,
@@ -3566,3 +3588,126 @@ class GooglePlusIE(InfoExtractor):
             'title':    video_title.decode('utf-8'),
             'ext':      video_extension.decode('utf-8'),
         }]
+
+class NBAIE(InfoExtractor):
+    _VALID_URL = r'^(?:https?://)?(?:watch\.|www\.)?nba\.com/(?:nba/)?video(/[^?]*)(\?.*)?$'
+    IE_NAME = u'nba'
+
+    def report_extraction(self, video_id):
+        self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        if mobj is None:
+            self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+            return
+
+        video_id = mobj.group(1)
+        if video_id.endswith('/index.html'):
+            video_id = video_id[:-len('/index.html')]
+
+        self.report_extraction(video_id)
+        try:
+            urlh = compat_urllib_request.urlopen(url)
+            webpage_bytes = urlh.read()
+            webpage = webpage_bytes.decode('utf-8', 'ignore')
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % compat_str(err))
+            return
+
+        video_url = u'http://ht-mobile.cdn.turner.com/nba/big' + video_id + '_nba_1280x720.mp4'
+        def _findProp(rexp, default=None):
+            m = re.search(rexp, webpage)
+            if m:
+                return unescapeHTML(m.group(1))
+            else:
+                return default
+
+        shortened_video_id = video_id.rpartition('/')[2]
+        title = _findProp(r'<meta property="og:title" content="(.*?)"', shortened_video_id).replace('NBA.com: ', '')
+        info = {
+            'id': shortened_video_id,
+            'url': video_url,
+            'ext': 'mp4',
+            'title': title,
+            'uploader_date': _findProp(r'<b>Date:</b> (.*?)</div>'),
+            'description': _findProp(r'<div class="description">(.*?)</h1>'),
+        }
+        return [info]
+
+class JustinTVIE(InfoExtractor):
+    """Information extractor for justin.tv and twitch.tv"""
+    # TODO: One broadcast may be split into multiple videos. The key
+    # 'broadcast_id' is the same for all parts, and 'broadcast_part'
+    # starts at 1 and increases. Can we treat all parts as one video?
+
+#    _VALID_URL = r"""^(?:http(?:s?)://)?www\.(?:justin|twitch)\.tv/
+#        ([^/]+)(?:/b/([^/]+))?/?(?:#.*)?$"""
+    _VALID_URL = r'^http://www.twitch.tv/(.*)$'
+    IE_NAME = u'justin.tv'
+    
+    _max_justin_results = 1000
+    _justin_page_limit = 100
+
+    def report_extraction(self, file_id):
+        """Report information extraction."""
+        self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, file_id))
+
+    # Return count of items, list of *valid* items
+    def _parse_page(self, url):
+        print url
+        try:
+            urlh = compat_urllib_request.urlopen(url)
+            webpage_bytes = urlh.read()
+            webpage = webpage_bytes.decode('utf-8', 'ignore')
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.trouble(u'ERROR: unable to download video info JSON: %s' % compat_str(err))
+            return
+        
+        response = json.loads(webpage)
+        info = []
+        for clip in response:
+            video_url = clip['video_file_url']
+            if video_url:
+                video_extension = os.path.splitext(video_url)[1][1:]
+                video_date = re.sub('-', '', clip['created_on'][:10])
+                info.append({
+                    'id': clip['id'],
+                    'url': video_url,
+                    'title': clip['title'],
+                    'uploader': clip['user_id'] or clip['channel_id'],
+                    'upload_date': video_date,
+                    'ext': video_extension,
+                })
+        print len(response)
+        return (len(response), info)
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        if mobj is None:
+            self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+            return
+        
+        api = 'http://api.justin.tv'
+        video_id = mobj.group(mobj.lastindex)
+        paged = False
+        if mobj.lastindex == 1:
+            paged = True
+            api += '/channel/archives/%s.json'
+        else:
+            api += '/clip/show/%s.json'
+        api = api % (video_id,)
+        
+        self.report_extraction(video_id)
+        
+        info = []
+        offset = 0
+        limit = self._justin_page_limit
+        while offset < self._max_justin_results:
+            page_url = api + ('?offset=%d&limit=%d' % (offset, limit))
+            page_count, page_info = self._parse_page(page_url)
+            info.extend(page_info)
+            if not paged or page_count != limit:
+                break
+            offset += limit
+        return info