[youtube] Adapt to new automatic captions rendition (closes #13467)
[youtube-dl] / youtube_dl / extractor / youtube.py
index 44a39282f104ff6bf588c7eee5122b190c8dba15..77cd271efeed3eb8570f97d4dd695a54ef5dd5c5 100644 (file)
@@ -1269,37 +1269,57 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     sub_lang_list[sub_lang] = sub_formats
                 return sub_lang_list
 
+            def make_captions(sub_url, sub_langs):
+                parsed_sub_url = compat_urllib_parse_urlparse(sub_url)
+                caption_qs = compat_parse_qs(parsed_sub_url.query)
+                captions = {}
+                for sub_lang in sub_langs:
+                    sub_formats = []
+                    for ext in self._SUBTITLE_FORMATS:
+                        caption_qs.update({
+                            'tlang': [sub_lang],
+                            'fmt': [ext],
+                        })
+                        sub_url = compat_urlparse.urlunparse(parsed_sub_url._replace(
+                            query=compat_urllib_parse_urlencode(caption_qs, True)))
+                        sub_formats.append({
+                            'url': sub_url,
+                            'ext': ext,
+                        })
+                    captions[sub_lang] = sub_formats
+                return captions
+
+            # New captions format as of 22.06.2017
+            player_response = args.get('player_response')
+            if player_response and isinstance(player_response, compat_str):
+                player_response = self._parse_json(
+                    player_response, video_id, fatal=False)
+                if player_response:
+                    renderer = player_response['captions']['playerCaptionsTracklistRenderer']
+                    base_url = renderer['captionTracks'][0]['baseUrl']
+                    sub_lang_list = []
+                    for lang in renderer['translationLanguages']:
+                        lang_code = lang.get('languageCode')
+                        if lang_code:
+                            sub_lang_list.append(lang_code)
+                    return make_captions(base_url, sub_lang_list)
+
             # Some videos don't provide ttsurl but rather caption_tracks and
             # caption_translation_languages (e.g. 20LmZk1hakA)
+            # Does not used anymore as of 22.06.2017
             caption_tracks = args['caption_tracks']
             caption_translation_languages = args['caption_translation_languages']
             caption_url = compat_parse_qs(caption_tracks.split(',')[0])['u'][0]
-            parsed_caption_url = compat_urllib_parse_urlparse(caption_url)
-            caption_qs = compat_parse_qs(parsed_caption_url.query)
-
-            sub_lang_list = {}
+            sub_lang_list = []
             for lang in caption_translation_languages.split(','):
                 lang_qs = compat_parse_qs(compat_urllib_parse_unquote_plus(lang))
                 sub_lang = lang_qs.get('lc', [None])[0]
-                if not sub_lang:
-                    continue
-                sub_formats = []
-                for ext in self._SUBTITLE_FORMATS:
-                    caption_qs.update({
-                        'tlang': [sub_lang],
-                        'fmt': [ext],
-                    })
-                    sub_url = compat_urlparse.urlunparse(parsed_caption_url._replace(
-                        query=compat_urllib_parse_urlencode(caption_qs, True)))
-                    sub_formats.append({
-                        'url': sub_url,
-                        'ext': ext,
-                    })
-                sub_lang_list[sub_lang] = sub_formats
-            return sub_lang_list
+                if sub_lang:
+                    sub_lang_list.append(sub_lang)
+            return make_captions(caption_url, sub_lang_list)
         # An extractor error can be raise by the download process if there are
         # no automatic captions but there are subtitles
-        except (KeyError, ExtractorError):
+        except (KeyError, IndexError, ExtractorError):
             self._downloader.report_warning(err_msg)
             return {}
 
@@ -1353,10 +1373,16 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             start_time = parse_duration(time_point)
             if start_time is None:
                 continue
+            if start_time > duration:
+                break
             end_time = (duration if next_num == len(chapter_lines)
                         else parse_duration(chapter_lines[next_num][1]))
             if end_time is None:
                 continue
+            if end_time > duration:
+                end_time = duration
+            if start_time > end_time:
+                break
             chapter_title = re.sub(
                 r'<a[^>]+>[^<]+</a>', '', chapter_line).strip(' \t-')
             chapter_title = re.sub(r'\s+', ' ', chapter_title)
@@ -1435,6 +1461,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         else:
             age_gate = False
             video_info = None
+            sts = None
             # Try looking directly into the video webpage
             ytplayer_config = self._get_ytplayer_config(video_id, video_webpage)
             if ytplayer_config:
@@ -1451,6 +1478,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                         args['ypc_vid'], YoutubeIE.ie_key(), video_id=args['ypc_vid'])
                 if args.get('livestream') == '1' or args.get('live_playback') == 1:
                     is_live = True
+                sts = ytplayer_config.get('sts')
             if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
                 # We also try looking in get_video_info since it may contain different dashmpd
                 # URL that points to a DASH manifest with possibly different itag set (some itags
@@ -1459,17 +1487,27 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 # The general idea is to take a union of itags of both DASH manifests (for example
                 # video with such 'manifest behavior' see https://github.com/rg3/youtube-dl/issues/6093)
                 self.report_video_info_webpage_download(video_id)
-                for el_type in ['&el=info', '&el=embedded', '&el=detailpage', '&el=vevo', '']:
-                    video_info_url = (
-                        '%s://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
-                        % (proto, video_id, el_type))
+                for el in ('info', 'embedded', 'detailpage', 'vevo', ''):
+                    query = {
+                        'video_id': video_id,
+                        'ps': 'default',
+                        'eurl': '',
+                        'gl': 'US',
+                        'hl': 'en',
+                    }
+                    if el:
+                        query['el'] = el
+                    if sts:
+                        query['sts'] = sts
                     video_info_webpage = self._download_webpage(
-                        video_info_url,
+                        '%s://www.youtube.com/get_video_info' % proto,
                         video_id, note=False,
-                        errnote='unable to download video info webpage')
+                        errnote='unable to download video info webpage',
+                        fatal=False, query=query)
+                    if not video_info_webpage:
+                        continue
                     get_video_info = compat_parse_qs(video_info_webpage)
-                    if get_video_info.get('use_cipher_signature') != ['True']:
-                        add_dash_mpd(get_video_info)
+                    add_dash_mpd(get_video_info)
                     if not video_info:
                         video_info = get_video_info
                     if 'token' in get_video_info:
@@ -1703,12 +1741,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 format_id = url_data['itag'][0]
                 url = url_data['url'][0]
 
-                if 'sig' in url_data:
-                    url += '&signature=' + url_data['sig'][0]
-                elif 's' in url_data:
-                    encrypted_sig = url_data['s'][0]
+                if 's' in url_data or self._downloader.params.get('youtube_include_dash_manifest', True):
                     ASSETS_RE = r'"assets":.+?"js":\s*("[^"]+")'
-
                     jsplayer_url_json = self._search_regex(
                         ASSETS_RE,
                         embed_webpage if age_gate else video_webpage,
@@ -1729,6 +1763,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                             video_webpage, 'age gate player URL')
                         player_url = json.loads(player_url_json)
 
+                if 'sig' in url_data:
+                    url += '&signature=' + url_data['sig'][0]
+                elif 's' in url_data:
+                    encrypted_sig = url_data['s'][0]
+
                     if self._downloader.params.get('verbose'):
                         if player_url is None:
                             player_version = 'unknown'