Remove code that was only used by the Grooveshark extractor

[youtube-dl] / youtube_dl / extractor / common.py

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index d302fe45fdea0bc7556fdbda4f321d64d86c2c7c..3ae5d52127f1014b235447692bb4ed24615178bd 100644 (file)
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -14,6 +14,7 @@ import xml.etree.ElementTree
 
 from ..compat import (
     compat_cookiejar,
 
 from ..compat import (
     compat_cookiejar,

+    compat_HTTPError,

     compat_http_client,
     compat_urllib_error,
     compat_urllib_parse_urlparse,
     compat_http_client,
     compat_urllib_error,
     compat_urllib_parse_urlparse,


@@ -21,6 +22,8 @@ from ..compat import (
     compat_str,
 )
 from ..utils import (
     compat_str,
 )
 from ..utils import (

+    age_restricted,
+    bug_reports_message,

     clean_html,
     compiled_regex_type,
     ExtractorError,
     clean_html,
     compiled_regex_type,
     ExtractorError,


@@ -40,11 +43,11 @@ class InfoExtractor(object):
     information about the video (or videos) the URL refers to. This
     information includes the real video URL, the video title, author and
     others. The information is stored in a dictionary which is then
     information about the video (or videos) the URL refers to. This
     information includes the real video URL, the video title, author and
     others. The information is stored in a dictionary which is then

-    passed to the FileDownloader. The FileDownloader processes this
+    passed to the YoutubeDL. The YoutubeDL processes this

     information possibly downloading the video to the file system, among
     other possible outcomes.
 
     information possibly downloading the video to the file system, among
     other possible outcomes.
 

-    The type field determines the the type of the result.
+    The type field determines the type of the result.

     By far the most common value (and the default if _type is missing) is
     "video", which indicates a single video.
 
     By far the most common value (and the default if _type is missing) is
     "video", which indicates a single video.
 


@@ -86,12 +89,15 @@ class InfoExtractor(object):
                     * player_url SWF Player URL (used for rtmpdump).
                     * protocol   The protocol that will be used for the actual
                                  download, lower-case.
                     * player_url SWF Player URL (used for rtmpdump).
                     * protocol   The protocol that will be used for the actual
                                  download, lower-case.

-                                 "http", "https", "rtsp", "rtmp", "m3u8" or so.
+                                 "http", "https", "rtsp", "rtmp", "rtmpe",
+                                 "m3u8", or "m3u8_native".

                     * preference Order number of this format. If this field is
                                  present and not None, the formats get sorted
                                  by this field, regardless of all other values.
                                  -1 for default (order by other properties),
                                  -2 or smaller for less than default.
                     * preference Order number of this format. If this field is
                                  present and not None, the formats get sorted
                                  by this field, regardless of all other values.
                                  -1 for default (order by other properties),
                                  -2 or smaller for less than default.

+                                 < -1000 to hide the format (if there is
+                                    another one which is strictly better)

                     * language_preference  Is this in the correct requested
                                  language?
                                  10 if it's what the URL is about,
                     * language_preference  Is this in the correct requested
                                  language?
                                  10 if it's what the URL is about,


@@ -105,12 +111,14 @@ class InfoExtractor(object):
                                   (quality takes higher priority)
                                  -1 for default (order by other properties),
                                  -2 or smaller for less than default.
                                   (quality takes higher priority)
                                  -1 for default (order by other properties),
                                  -2 or smaller for less than default.

-                    * http_referer  HTTP Referer header value to set.
-                    * http_method  HTTP method to use for the download.

                     * http_headers  A dictionary of additional HTTP headers
                                  to add to the request.
                     * http_headers  A dictionary of additional HTTP headers
                                  to add to the request.

-                    * http_post_data  Additional data to send with a POST
-                                 request.
+                    * stretched_ratio  If given and not 1, indicates that the
+                                 video's pixels are not square.
+                                 width : height ratio as float.
+                    * no_resume  The server does not support resuming the
+                                 (HTTP or RTMP) download. Boolean.
+

     url:            Final video URL.
     ext:            Video filename extension.
     format:         The video format, defaults to ext (used for --get-format)
     url:            Final video URL.
     ext:            Video filename extension.
     format:         The video format, defaults to ext (used for --get-format)


@@ -124,7 +132,9 @@ class InfoExtractor(object):
                     something like "4234987", title "Dancing naked mole rats",
                     and display_id "dancing-naked-mole-rats"
     thumbnails:     A list of dictionaries, with the following entries:
                     something like "4234987", title "Dancing naked mole rats",
                     and display_id "dancing-naked-mole-rats"
     thumbnails:     A list of dictionaries, with the following entries:

+                        * "id" (optional, string) - Thumbnail format ID

                         * "url"
                         * "url"

+                        * "preference" (optional, int) - quality of the image

                         * "width" (optional, int)
                         * "height" (optional, int)
                         * "resolution" (optional, string "{width}x{height"},
                         * "width" (optional, int)
                         * "height" (optional, int)
                         * "resolution" (optional, string "{width}x{height"},


@@ -132,18 +142,37 @@ class InfoExtractor(object):
     thumbnail:      Full URL to a video thumbnail image.
     description:    Full video description.
     uploader:       Full name of the video uploader.
     thumbnail:      Full URL to a video thumbnail image.
     description:    Full video description.
     uploader:       Full name of the video uploader.

+    creator:        The main artist who created the video.

     timestamp:      UNIX timestamp of the moment the video became available.
     upload_date:    Video upload date (YYYYMMDD).
                     If not explicitly set, calculated from timestamp.
     uploader_id:    Nickname or id of the video uploader.
     location:       Physical location where the video was filmed.
     timestamp:      UNIX timestamp of the moment the video became available.
     upload_date:    Video upload date (YYYYMMDD).
                     If not explicitly set, calculated from timestamp.
     uploader_id:    Nickname or id of the video uploader.
     location:       Physical location where the video was filmed.

-    subtitles:      The subtitle file contents as a dictionary in the format
-                    {language: subtitles}.
+    subtitles:      The available subtitles as a dictionary in the format
+                    {language: subformats}. "subformats" is a list sorted from
+                    lower to higher preference, each element is a dictionary
+                    with the "ext" entry and one of:
+                        * "data": The subtitles file contents
+                        * "url": A url pointing to the subtitles file
+    automatic_captions: Like 'subtitles', used by the YoutubeIE for
+                    automatically generated captions

     duration:       Length of the video in seconds, as an integer.
     view_count:     How many users have watched the video on the platform.
     like_count:     Number of positive ratings of the video
     dislike_count:  Number of negative ratings of the video
     duration:       Length of the video in seconds, as an integer.
     view_count:     How many users have watched the video on the platform.
     like_count:     Number of positive ratings of the video
     dislike_count:  Number of negative ratings of the video

+    average_rating: Average rating give by users, the scale used depends on the webpage

     comment_count:  Number of comments on the video
     comment_count:  Number of comments on the video

+    comments:       A list of comments, each with one or more of the following
+                    properties (all but one of text or html optional):
+                        * "author" - human-readable name of the comment author
+                        * "author_id" - user ID of the comment author
+                        * "id" - Comment ID
+                        * "html" - Comment as HTML
+                        * "text" - Plain text of the comment
+                        * "timestamp" - UNIX timestamp of comment
+                        * "parent" - ID of the comment this one is replying to.
+                                     Set to "root" to indicate that this is a
+                                     comment to the original video.

     age_limit:      Age restriction for the video, as an integer (years)
     webpage_url:    The url to the video webpage, if given to youtube-dl it
                     should allow to get the same result again. (It will be set
     age_limit:      Age restriction for the video, as an integer (years)
     webpage_url:    The url to the video webpage, if given to youtube-dl it
                     should allow to get the same result again. (It will be set


@@ -239,8 +268,15 @@ class InfoExtractor(object):
 
     def extract(self, url):
         """Extracts URL information and returns it in list of dicts."""
 
     def extract(self, url):
         """Extracts URL information and returns it in list of dicts."""

-        self.initialize()
-        return self._real_extract(url)
+        try:
+            self.initialize()
+            return self._real_extract(url)
+        except ExtractorError:
+            raise
+        except compat_http_client.IncompleteRead as e:
+            raise ExtractorError('A network error has occured.', cause=e, expected=True)
+        except (KeyError, StopIteration) as e:
+            raise ExtractorError('An extractor error has occured.', cause=e)

 
     def set_downloader(self, downloader):
         """Sets the downloader for this IE."""
 
     def set_downloader(self, downloader):
         """Sets the downloader for this IE."""


@@ -286,7 +322,7 @@ class InfoExtractor(object):
                 self._downloader.report_warning(errmsg)
                 return False
 
                 self._downloader.report_warning(errmsg)
                 return False
 

-    def _download_webpage_handle(self, url_or_request, video_id, note=None, errnote=None, fatal=True):
+    def _download_webpage_handle(self, url_or_request, video_id, note=None, errnote=None, fatal=True, encoding=None):

         """ Returns a tuple (page content as string, URL handle) """
         # Strip hashes from the URL (#1038)
         if isinstance(url_or_request, (compat_str, str)):
         """ Returns a tuple (page content as string, URL handle) """
         # Strip hashes from the URL (#1038)
         if isinstance(url_or_request, (compat_str, str)):


@@ -296,14 +332,11 @@ class InfoExtractor(object):
         if urlh is False:
             assert not fatal
             return False
         if urlh is False:
             assert not fatal
             return False

-        content = self._webpage_read_content(urlh, url_or_request, video_id, note, errnote, fatal)
+        content = self._webpage_read_content(urlh, url_or_request, video_id, note, errnote, fatal, encoding=encoding)

         return (content, urlh)
 
         return (content, urlh)
 

-    def _webpage_read_content(self, urlh, url_or_request, video_id, note=None, errnote=None, fatal=True, prefix=None):
-        content_type = urlh.headers.get('Content-Type', '')
-        webpage_bytes = urlh.read()
-        if prefix is not None:
-            webpage_bytes = prefix + webpage_bytes
+    @staticmethod
+    def _guess_encoding_from_content(content_type, webpage_bytes):

         m = re.match(r'[a-zA-Z0-9_.-]+/[a-zA-Z0-9_.-]+\s*;\s*charset=(.+)', content_type)
         if m:
             encoding = m.group(1)
         m = re.match(r'[a-zA-Z0-9_.-]+/[a-zA-Z0-9_.-]+\s*;\s*charset=(.+)', content_type)
         if m:
             encoding = m.group(1)


@@ -316,6 +349,16 @@ class InfoExtractor(object):
                 encoding = 'utf-16'
             else:
                 encoding = 'utf-8'
                 encoding = 'utf-16'
             else:
                 encoding = 'utf-8'

+
+        return encoding
+
+    def _webpage_read_content(self, urlh, url_or_request, video_id, note=None, errnote=None, fatal=True, prefix=None, encoding=None):
+        content_type = urlh.headers.get('Content-Type', '')
+        webpage_bytes = urlh.read()
+        if prefix is not None:
+            webpage_bytes = prefix + webpage_bytes
+        if not encoding:
+            encoding = self._guess_encoding_from_content(content_type, webpage_bytes)

         if self._downloader.params.get('dump_intermediate_pages', False):
             try:
                 url = url_or_request.get_full_url()
         if self._downloader.params.get('dump_intermediate_pages', False):
             try:
                 url = url_or_request.get_full_url()


@@ -359,12 +402,32 @@ class InfoExtractor(object):
             if blocked_iframe:
                 msg += ' Visit %s for more details' % blocked_iframe
             raise ExtractorError(msg, expected=True)
             if blocked_iframe:
                 msg += ' Visit %s for more details' % blocked_iframe
             raise ExtractorError(msg, expected=True)

+        if '<title>The URL you requested has been blocked</title>' in content[:512]:
+            msg = (
+                'Access to this webpage has been blocked by Indian censorship. '
+                'Use a VPN or proxy server (with --proxy) to route around it.')
+            block_msg = self._html_search_regex(
+                r'</h1><p>(.*?)</p>',
+                content, 'block message', default=None)
+            if block_msg:
+                msg += ' (Message: "%s")' % block_msg.replace('\n', ' ')
+            raise ExtractorError(msg, expected=True)

 
         return content
 
 
         return content
 

-    def _download_webpage(self, url_or_request, video_id, note=None, errnote=None, fatal=True):
+    def _download_webpage(self, url_or_request, video_id, note=None, errnote=None, fatal=True, tries=1, timeout=5, encoding=None):

         """ Returns the data of the page as a string """
         """ Returns the data of the page as a string """

-        res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal)
+        success = False
+        try_count = 0
+        while success is False:
+            try:
+                res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding)
+                success = True
+            except compat_http_client.IncompleteRead as e:
+                try_count += 1
+                if try_count >= tries:
+                    raise e
+                self._sleep(timeout, video_id)

         if res is False:
             return res
         else:
         if res is False:
             return res
         else:


@@ -373,10 +436,10 @@ class InfoExtractor(object):
 
     def _download_xml(self, url_or_request, video_id,
                       note='Downloading XML', errnote='Unable to download XML',
 
     def _download_xml(self, url_or_request, video_id,
                       note='Downloading XML', errnote='Unable to download XML',

-                      transform_source=None, fatal=True):
+                      transform_source=None, fatal=True, encoding=None):

         """Return the xml as an xml.etree.ElementTree.Element"""
         xml_string = self._download_webpage(
         """Return the xml as an xml.etree.ElementTree.Element"""
         xml_string = self._download_webpage(

-            url_or_request, video_id, note, errnote, fatal=fatal)
+            url_or_request, video_id, note, errnote, fatal=fatal, encoding=encoding)

         if xml_string is False:
             return xml_string
         if transform_source:
         if xml_string is False:
             return xml_string
         if transform_source:


@@ -387,9 +450,10 @@ class InfoExtractor(object):
                        note='Downloading JSON metadata',
                        errnote='Unable to download JSON metadata',
                        transform_source=None,
                        note='Downloading JSON metadata',
                        errnote='Unable to download JSON metadata',
                        transform_source=None,

-                       fatal=True):
+                       fatal=True, encoding=None):

         json_string = self._download_webpage(
         json_string = self._download_webpage(

-            url_or_request, video_id, note, errnote, fatal=fatal)
+            url_or_request, video_id, note, errnote, fatal=fatal,
+            encoding=encoding)

         if (not fatal) and json_string is False:
             return None
         return self._parse_json(
         if (not fatal) and json_string is False:
             return None
         return self._parse_json(


@@ -434,7 +498,7 @@ class InfoExtractor(object):
 
     # Methods for following #608
     @staticmethod
 
     # Methods for following #608
     @staticmethod

-    def url_result(url, ie=None, video_id=None):
+    def url_result(url, ie=None, video_id=None, video_title=None):

         """Returns a url that points to a page that should be processed"""
         # TODO: ie should be the class used for getting the info
         video_info = {'_type': 'url',
         """Returns a url that points to a page that should be processed"""
         # TODO: ie should be the class used for getting the info
         video_info = {'_type': 'url',


@@ -442,6 +506,8 @@ class InfoExtractor(object):
                       'ie_key': ie}
         if video_id is not None:
             video_info['id'] = video_id
                       'ie_key': ie}
         if video_id is not None:
             video_info['id'] = video_id

+        if video_title is not None:
+            video_info['title'] = video_title

         return video_info
 
     @staticmethod
         return video_info
 
     @staticmethod


@@ -472,7 +538,7 @@ class InfoExtractor(object):
                 if mobj:
                     break
 
                 if mobj:
                     break
 

-        if os.name != 'nt' and sys.stderr.isatty():
+        if not self._downloader.params.get('no_color') and os.name != 'nt' and sys.stderr.isatty():

             _name = '\033[0;34m%s\033[0m' % name
         else:
             _name = name
             _name = '\033[0;34m%s\033[0m' % name
         else:
             _name = name


@@ -488,8 +554,7 @@ class InfoExtractor(object):
         elif fatal:
             raise RegexNotFoundError('Unable to extract %s' % _name)
         else:
         elif fatal:
             raise RegexNotFoundError('Unable to extract %s' % _name)
         else:

-            self._downloader.report_warning('unable to extract %s; '
-                                            'please report this issue on http://yt-dl.org/bug' % _name)
+            self._downloader.report_warning('unable to extract %s' % _name + bug_reports_message())

             return None
 
     def _html_search_regex(self, pattern, string, name, default=_NO_DEFAULT, fatal=True, flags=0, group=None):
             return None
 
     def _html_search_regex(self, pattern, string, name, default=_NO_DEFAULT, fatal=True, flags=0, group=None):


@@ -504,7 +569,7 @@ class InfoExtractor(object):
 
     def _get_login_info(self):
         """
 
     def _get_login_info(self):
         """

-        Get the the login info as (username, password)
+        Get the login info as (username, password)

         It will look in the netrc file using the _NETRC_MACHINE value
         If there's no info available, return (None, None)
         """
         It will look in the netrc file using the _NETRC_MACHINE value
         If there's no info available, return (None, None)
         """


@@ -589,9 +654,9 @@ class InfoExtractor(object):
         if display_name is None:
             display_name = name
         return self._html_search_regex(
         if display_name is None:
             display_name = name
         return self._html_search_regex(

-            r'''(?ix)<meta
+            r'''(?isx)<meta

                     (?=[^>]+(?:itemprop|name|property)=(["\']?)%s\1)
                     (?=[^>]+(?:itemprop|name|property)=(["\']?)%s\1)

-                    [^>]+content=(["\'])(?P<content>.*?)\1''' % re.escape(name),
+                    [^>]+?content=(["\'])(?P<content>.*?)\2''' % re.escape(name),

             html, display_name, fatal=fatal, group='content', **kwargs)
 
     def _dc_search_uploader(self, html):
             html, display_name, fatal=fatal, group='content', **kwargs)
 
     def _dc_search_uploader(self, html):


@@ -621,11 +686,26 @@ class InfoExtractor(object):
         }
         return RATING_TABLE.get(rating.lower(), None)
 
         }
         return RATING_TABLE.get(rating.lower(), None)
 

+    def _family_friendly_search(self, html):
+        # See http://schema.org/VideoObject
+        family_friendly = self._html_search_meta('isFamilyFriendly', html)
+
+        if not family_friendly:
+            return None
+
+        RATING_TABLE = {
+            '1': 0,
+            'true': 0,
+            '0': 18,
+            'false': 18,
+        }
+        return RATING_TABLE.get(family_friendly.lower(), None)
+

     def _twitter_search_player(self, html):
         return self._html_search_meta('twitter:player', html,
                                       'twitter card player')
 
     def _twitter_search_player(self, html):
         return self._html_search_meta('twitter:player', html,
                                       'twitter card player')
 

-    def _sort_formats(self, formats):
+    def _sort_formats(self, formats, field_preference=None):

         if not formats:
             raise ExtractorError('No video formats found')
 
         if not formats:
             raise ExtractorError('No video formats found')
 


@@ -635,6 +715,9 @@ class InfoExtractor(object):
             if not f.get('ext') and 'url' in f:
                 f['ext'] = determine_ext(f['url'])
 
             if not f.get('ext') and 'url' in f:
                 f['ext'] = determine_ext(f['url'])
 

+            if isinstance(field_preference, (list, tuple)):
+                return tuple(f.get(field) if f.get(field) is not None else -1 for field in field_preference)
+

             preference = f.get('preference')
             if preference is None:
                 proto = f.get('protocol')
             preference = f.get('preference')
             if preference is None:
                 proto = f.get('protocol')


@@ -670,21 +753,44 @@ class InfoExtractor(object):
                 preference,
                 f.get('language_preference') if f.get('language_preference') is not None else -1,
                 f.get('quality') if f.get('quality') is not None else -1,
                 preference,
                 f.get('language_preference') if f.get('language_preference') is not None else -1,
                 f.get('quality') if f.get('quality') is not None else -1,

+                f.get('tbr') if f.get('tbr') is not None else -1,
+                f.get('filesize') if f.get('filesize') is not None else -1,
+                f.get('vbr') if f.get('vbr') is not None else -1,

                 f.get('height') if f.get('height') is not None else -1,
                 f.get('width') if f.get('width') is not None else -1,
                 ext_preference,
                 f.get('height') if f.get('height') is not None else -1,
                 f.get('width') if f.get('width') is not None else -1,
                 ext_preference,

-                f.get('tbr') if f.get('tbr') is not None else -1,
-                f.get('vbr') if f.get('vbr') is not None else -1,

                 f.get('abr') if f.get('abr') is not None else -1,
                 audio_ext_preference,
                 f.get('fps') if f.get('fps') is not None else -1,
                 f.get('abr') if f.get('abr') is not None else -1,
                 audio_ext_preference,
                 f.get('fps') if f.get('fps') is not None else -1,

-                f.get('filesize') if f.get('filesize') is not None else -1,

                 f.get('filesize_approx') if f.get('filesize_approx') is not None else -1,
                 f.get('source_preference') if f.get('source_preference') is not None else -1,
                 f.get('format_id'),
             )
         formats.sort(key=_formats_key)
 
                 f.get('filesize_approx') if f.get('filesize_approx') is not None else -1,
                 f.get('source_preference') if f.get('source_preference') is not None else -1,
                 f.get('format_id'),
             )
         formats.sort(key=_formats_key)
 

+    def _check_formats(self, formats, video_id):
+        if formats:
+            formats[:] = filter(
+                lambda f: self._is_valid_url(
+                    f['url'], video_id,
+                    item='%s video format' % f.get('format_id') if f.get('format_id') else 'video'),
+                formats)
+
+    def _is_valid_url(self, url, video_id, item='video'):
+        url = self._proto_relative_url(url, scheme='http:')
+        # For now assume non HTTP(S) URLs always valid
+        if not (url.startswith('http://') or url.startswith('https://')):
+            return True
+        try:
+            self._request_webpage(url, video_id, 'Checking %s URL' % item)
+            return True
+        except ExtractorError as e:
+            if isinstance(e.cause, compat_HTTPError):
+                self.report_warning(
+                    '%s URL is invalid, skipping' % item, video_id)
+                return False
+            raise
+

     def http_scheme(self):
         """ Either "http:" or "https:", depending on the user's preferences """
         return (
     def http_scheme(self):
         """ Either "http:" or "https:", depending on the user's preferences """
         return (


@@ -709,37 +815,45 @@ class InfoExtractor(object):
         self.to_screen(msg)
         time.sleep(timeout)
 
         self.to_screen(msg)
         time.sleep(timeout)
 

-    def _extract_f4m_formats(self, manifest_url, video_id):
+    def _extract_f4m_formats(self, manifest_url, video_id, preference=None, f4m_id=None):

         manifest = self._download_xml(
             manifest_url, video_id, 'Downloading f4m manifest',
             'Unable to download f4m manifest')
 
         formats = []
         manifest = self._download_xml(
             manifest_url, video_id, 'Downloading f4m manifest',
             'Unable to download f4m manifest')
 
         formats = []

+        manifest_version = '1.0'

         media_nodes = manifest.findall('{http://ns.adobe.com/f4m/1.0}media')
         media_nodes = manifest.findall('{http://ns.adobe.com/f4m/1.0}media')

+        if not media_nodes:
+            manifest_version = '2.0'
+            media_nodes = manifest.findall('{http://ns.adobe.com/f4m/2.0}media')

         for i, media_el in enumerate(media_nodes):
         for i, media_el in enumerate(media_nodes):

+            if manifest_version == '2.0':
+                manifest_url = ('/'.join(manifest_url.split('/')[:-1]) + '/' +
+                                (media_el.attrib.get('href') or media_el.attrib.get('url')))

             tbr = int_or_none(media_el.attrib.get('bitrate'))
             tbr = int_or_none(media_el.attrib.get('bitrate'))

-            format_id = 'f4m-%d' % (i if tbr is None else tbr)

             formats.append({
             formats.append({

-                'format_id': format_id,
+                'format_id': '-'.join(filter(None, [f4m_id, compat_str(i if tbr is None else tbr)])),

                 'url': manifest_url,
                 'ext': 'flv',
                 'tbr': tbr,
                 'width': int_or_none(media_el.attrib.get('width')),
                 'height': int_or_none(media_el.attrib.get('height')),
                 'url': manifest_url,
                 'ext': 'flv',
                 'tbr': tbr,
                 'width': int_or_none(media_el.attrib.get('width')),
                 'height': int_or_none(media_el.attrib.get('height')),

+                'preference': preference,

             })
         self._sort_formats(formats)
 
         return formats
 
     def _extract_m3u8_formats(self, m3u8_url, video_id, ext=None,
             })
         self._sort_formats(formats)
 
         return formats
 
     def _extract_m3u8_formats(self, m3u8_url, video_id, ext=None,

-                              entry_protocol='m3u8', preference=None):
+                              entry_protocol='m3u8', preference=None,
+                              m3u8_id=None):

 
         formats = [{
 
         formats = [{

-            'format_id': 'm3u8-meta',
+            'format_id': '-'.join(filter(None, [m3u8_id, 'meta'])),

             'url': m3u8_url,
             'ext': ext,
             'protocol': 'm3u8',
             'url': m3u8_url,
             'ext': ext,
             'protocol': 'm3u8',

-            'preference': -1,
+            'preference': preference - 1 if preference else -1,

             'resolution': 'multiple',
             'format_note': 'Quality selection URL',
         }]
             'resolution': 'multiple',
             'format_note': 'Quality selection URL',
         }]


@@ -754,6 +868,7 @@ class InfoExtractor(object):
             note='Downloading m3u8 information',
             errnote='Failed to download m3u8 information')
         last_info = None
             note='Downloading m3u8 information',
             errnote='Failed to download m3u8 information')
         last_info = None

+        last_media = None

         kv_rex = re.compile(
             r'(?P<key>[a-zA-Z_-]+)=(?P<val>"[^"]+"|[^",]+)(?:,|$)')
         for line in m3u8_doc.splitlines():
         kv_rex = re.compile(
             r'(?P<key>[a-zA-Z_-]+)=(?P<val>"[^"]+"|[^",]+)(?:,|$)')
         for line in m3u8_doc.splitlines():


@@ -764,6 +879,13 @@ class InfoExtractor(object):
                     if v.startswith('"'):
                         v = v[1:-1]
                     last_info[m.group('key')] = v
                     if v.startswith('"'):
                         v = v[1:-1]
                     last_info[m.group('key')] = v

+            elif line.startswith('#EXT-X-MEDIA:'):
+                last_media = {}
+                for m in kv_rex.finditer(line):
+                    v = m.group('val')
+                    if v.startswith('"'):
+                        v = v[1:-1]
+                    last_media[m.group('key')] = v

             elif line.startswith('#') or not line.strip():
                 continue
             else:
             elif line.startswith('#') or not line.strip():
                 continue
             else:


@@ -771,9 +893,13 @@ class InfoExtractor(object):
                     formats.append({'url': format_url(line)})
                     continue
                 tbr = int_or_none(last_info.get('BANDWIDTH'), scale=1000)
                     formats.append({'url': format_url(line)})
                     continue
                 tbr = int_or_none(last_info.get('BANDWIDTH'), scale=1000)

-
+                format_id = []
+                if m3u8_id:
+                    format_id.append(m3u8_id)
+                last_media_name = last_media.get('NAME') if last_media else None
+                format_id.append(last_media_name if last_media_name else '%d' % (tbr if tbr else len(formats)))

                 f = {
                 f = {

-                    'format_id': 'm3u8-%d' % (tbr if tbr else len(formats)),
+                    'format_id': '-'.join(format_id),

                     'url': format_url(line.strip()),
                     'tbr': tbr,
                     'ext': ext,
                     'url': format_url(line.strip()),
                     'tbr': tbr,
                     'ext': ext,


@@ -793,54 +919,78 @@ class InfoExtractor(object):
                     width_str, height_str = resolution.split('x')
                     f['width'] = int(width_str)
                     f['height'] = int(height_str)
                     width_str, height_str = resolution.split('x')
                     f['width'] = int(width_str)
                     f['height'] = int(height_str)

+                if last_media is not None:
+                    f['m3u8_media'] = last_media
+                    last_media = None

                 formats.append(f)
                 last_info = {}
         self._sort_formats(formats)
         return formats
 
     # TODO: improve extraction
                 formats.append(f)
                 last_info = {}
         self._sort_formats(formats)
         return formats
 
     # TODO: improve extraction

-    def _extract_smil_formats(self, smil_url, video_id):
+    def _extract_smil_formats(self, smil_url, video_id, fatal=True):

         smil = self._download_xml(
             smil_url, video_id, 'Downloading SMIL file',
         smil = self._download_xml(
             smil_url, video_id, 'Downloading SMIL file',

-            'Unable to download SMIL file')
+            'Unable to download SMIL file', fatal=fatal)
+        if smil is False:
+            assert not fatal
+            return []

 
         base = smil.find('./head/meta').get('base')
 
         formats = []
         rtmp_count = 0
 
         base = smil.find('./head/meta').get('base')
 
         formats = []
         rtmp_count = 0

-        for video in smil.findall('./body/switch/video'):
-            src = video.get('src')
-            if not src:
-                continue
-            bitrate = int_or_none(video.get('system-bitrate') or video.get('systemBitrate'), 1000)
-            width = int_or_none(video.get('width'))
-            height = int_or_none(video.get('height'))
-            proto = video.get('proto')
-            if not proto:
-                if base:
-                    if base.startswith('rtmp'):
-                        proto = 'rtmp'
-                    elif base.startswith('http'):
-                        proto = 'http'
-            ext = video.get('ext')
-            if proto == 'm3u8':
-                formats.extend(self._extract_m3u8_formats(src, video_id, ext))
-            elif proto == 'rtmp':
-                rtmp_count += 1
-                streamer = video.get('streamer') or base
-                formats.append({
-                    'url': streamer,
-                    'play_path': src,
-                    'ext': 'flv',
-                    'format_id': 'rtmp-%d' % (rtmp_count if bitrate is None else bitrate),
-                    'tbr': bitrate,
-                    'width': width,
-                    'height': height,
-                })
+        if smil.findall('./body/seq/video'):
+            video = smil.findall('./body/seq/video')[0]
+            fmts, rtmp_count = self._parse_smil_video(video, video_id, base, rtmp_count)
+            formats.extend(fmts)
+        else:
+            for video in smil.findall('./body/switch/video'):
+                fmts, rtmp_count = self._parse_smil_video(video, video_id, base, rtmp_count)
+                formats.extend(fmts)
+

         self._sort_formats(formats)
 
         return formats
 
         self._sort_formats(formats)
 
         return formats
 

+    def _parse_smil_video(self, video, video_id, base, rtmp_count):
+        src = video.get('src')
+        if not src:
+            return ([], rtmp_count)
+        bitrate = int_or_none(video.get('system-bitrate') or video.get('systemBitrate'), 1000)
+        width = int_or_none(video.get('width'))
+        height = int_or_none(video.get('height'))
+        proto = video.get('proto')
+        if not proto:
+            if base:
+                if base.startswith('rtmp'):
+                    proto = 'rtmp'
+                elif base.startswith('http'):
+                    proto = 'http'
+        ext = video.get('ext')
+        if proto == 'm3u8':
+            return (self._extract_m3u8_formats(src, video_id, ext), rtmp_count)
+        elif proto == 'rtmp':
+            rtmp_count += 1
+            streamer = video.get('streamer') or base
+            return ([{
+                'url': streamer,
+                'play_path': src,
+                'ext': 'flv',
+                'format_id': 'rtmp-%d' % (rtmp_count if bitrate is None else bitrate),
+                'tbr': bitrate,
+                'width': width,
+                'height': height,
+            }], rtmp_count)
+        elif proto.startswith('http'):
+            return ([{
+                'url': base + src,
+                'ext': ext or 'flv',
+                'tbr': bitrate,
+                'width': width,
+                'height': height,
+            }], rtmp_count)
+

     def _live_title(self, name):
         """ Generate the title for a live video """
         now = datetime.datetime.now()
     def _live_title(self, name):
         """ Generate the title for a live video """
         now = datetime.datetime.now()


@@ -875,6 +1025,56 @@ class InfoExtractor(object):
             None, '/', True, False, expire_time, '', None, None, None)
         self._downloader.cookiejar.set_cookie(cookie)
 
             None, '/', True, False, expire_time, '', None, None, None)
         self._downloader.cookiejar.set_cookie(cookie)
 

+    def get_testcases(self, include_onlymatching=False):
+        t = getattr(self, '_TEST', None)
+        if t:
+            assert not hasattr(self, '_TESTS'), \
+                '%s has _TEST and _TESTS' % type(self).__name__
+            tests = [t]
+        else:
+            tests = getattr(self, '_TESTS', [])
+        for t in tests:
+            if not include_onlymatching and t.get('only_matching', False):
+                continue
+            t['name'] = type(self).__name__[:-len('IE')]
+            yield t
+
+    def is_suitable(self, age_limit):
+        """ Test whether the extractor is generally suitable for the given
+        age limit (i.e. pornographic sites are not, all others usually are) """
+
+        any_restricted = False
+        for tc in self.get_testcases(include_onlymatching=False):
+            if 'playlist' in tc:
+                tc = tc['playlist'][0]
+            is_restricted = age_restricted(
+                tc.get('info_dict', {}).get('age_limit'), age_limit)
+            if not is_restricted:
+                return True
+            any_restricted = any_restricted or is_restricted
+        return not any_restricted
+
+    def extract_subtitles(self, *args, **kwargs):
+        if (self._downloader.params.get('writesubtitles', False) or
+                self._downloader.params.get('listsubtitles')):
+            return self._get_subtitles(*args, **kwargs)
+        return {}
+
+    def _get_subtitles(self, *args, **kwargs):
+        raise NotImplementedError("This method must be implemented by subclasses")
+
+    def extract_automatic_captions(self, *args, **kwargs):
+        if (self._downloader.params.get('writeautomaticsub', False) or
+                self._downloader.params.get('listsubtitles')):
+            return self._get_automatic_captions(*args, **kwargs)
+        return {}
+
+    def _get_automatic_captions(self, *args, **kwargs):
+        raise NotImplementedError("This method must be implemented by subclasses")
+
+    def _subtitles_timecode(self, seconds):
+        return '%02d:%02d:%02d.%03d' % (seconds / 3600, (seconds % 3600) / 60, seconds % 60, (seconds % 1) * 1000)
+

 
 class SearchInfoExtractor(InfoExtractor):
     """
 
 class SearchInfoExtractor(InfoExtractor):
     """