Merge branch 'master' into add_sponsorblock

20 files changed, 163 insertions, 106 deletions

diff --git a/generate_release.py b/generate_release.py
index 1a7e14b..ead2772 100644
--- a/generate_release.py
+++ b/generate_release.py
@@ -119,7 +119,7 @@ wine_run(['./python/python.exe', '-I', 'get-pip.py'])
 
 ## Isolated mode
     We want to run in what is called isolated mode, given by the switch -I.
-This mode prevents the embedded python distribution from searching in 
+This mode prevents the embedded python distribution from searching in
 global directories for imports
 
     For example, if a user has `C:\Python37` and the embedded distribution is
diff --git a/settings.py b/settings.py
index 7417cc6..e1cec13 100644
--- a/settings.py
+++ b/settings.py
@@ -160,6 +160,19 @@ For security reasons, enabling this is not recommended.''',
         ],
     }),
 
+    ('font', {
+        'type': int,
+        'default': 1,
+        'comment': '',
+        'options': [
+            (0, 'Browser default'),
+            (1, 'Arial'),
+            (2, 'Liberation Serif'),
+            (3, 'Verdana'),
+            (4, 'Tahoma'),
+        ],
+    }),
+
     ('autocheck_subscriptions', {
         'type': bool,
         'default': 0,
@@ -319,12 +332,6 @@ else:
 globals().update(current_settings_dict)
 
 
-if proxy_images:
-    img_prefix = "/"
-else:
-    img_prefix = ""
-
-
 
 if route_tor:
     print("Tor routing is ON")
@@ -343,6 +350,19 @@ def add_setting_changed_hook(setting, func):
         hooks[setting] = [func]
 
 
+def set_img_prefix(old_value=None, value=None):
+    global img_prefix
+    if value is None:
+        value = proxy_images
+    if value:
+        img_prefix = '/'
+    else:
+        img_prefix = ''
+set_img_prefix()
+add_setting_changed_hook('proxy_images', set_img_prefix)
+
+
+
 def settings_page():
     if request.method == 'GET':
         return flask.render_template('settings.html',
diff --git a/youtube/__init__.py b/youtube/__init__.py
index 92e1878..6d79e44 100644
--- a/youtube/__init__.py
+++ b/youtube/__init__.py
@@ -1,5 +1,6 @@
 from youtube import util
 import flask
+from flask import request
 import settings
 import traceback
 import re
@@ -59,6 +60,7 @@ def timestamps(text):
 
 @yt_app.errorhandler(500)
 def error_page(e):
+    slim = request.args.get('slim', False) # whether it was an ajax request
     if (exc_info()[0] == util.FetchError
         and exc_info()[1].code == '429'
         and settings.route_tor
@@ -68,5 +70,22 @@ def error_page(e):
             ' using the New Identity button in the Tor Browser.')
         if exc_info()[1].ip:
             error_message += ' Exit node IP address: ' + exc_info()[1].ip
-        return flask.render_template('error.html', error_message=error_message), 502
-    return flask.render_template('error.html', traceback=traceback.format_exc()), 500
+        return flask.render_template('error.html', error_message=error_message, slim=slim), 502
+    return flask.render_template('error.html', traceback=traceback.format_exc(), slim=slim), 500
+
+font_choices = {
+    0: 'initial',
+    1: 'arial, "liberation sans", sans-serif',
+    2: '"liberation serif", "times new roman", calibri, carlito, serif',
+    3: 'verdana, sans-serif',
+    4: 'tahoma, sans-serif',
+}
+
+@yt_app.route('/shared.css')
+def get_css():
+    return flask.Response(
+        flask.render_template('shared.css',
+            font_family = font_choices[settings.font]
+        ),
+        mimetype='text/css',
+    )
diff --git a/youtube/comments.py b/youtube/comments.py
index a7a93cc..b3f1a90 100644
--- a/youtube/comments.py
+++ b/youtube/comments.py
@@ -90,7 +90,7 @@ def single_comment_ctoken(video_id, comment_id):
 def post_process_comments_info(comments_info):
     for comment in comments_info['comments']:
         comment['author_url'] = concat_or_none(
-            util.URL_ORIGIN, comment['author_url'])
+            '/', comment['author_url'])
         comment['author_avatar'] = concat_or_none(
             settings.img_prefix, comment['author_avatar'])
 
diff --git a/youtube/post_comment.py b/youtube/post_comment.py
index 78f080f..0bf0cf5 100644
--- a/youtube/post_comment.py
+++ b/youtube/post_comment.py
@@ -155,7 +155,7 @@ def get_delete_comment_page():
 def get_post_comment_page():
     video_id = request.args['video_id']
     parent_id = request.args.get('parent_id', '')
-    
+
     if parent_id:   # comment reply
         form_action = util.URL_ORIGIN + '/comments?parent_id=' + parent_id + "&video_id=" + video_id
         replying = True
diff --git a/youtube/proto.py b/youtube/proto.py
index d966455..5fd16d5 100644
--- a/youtube/proto.py
+++ b/youtube/proto.py
@@ -5,13 +5,13 @@ import io
 def byte(n):
     return bytes((n,))
 
-    
+
 def varint_encode(offset):
     '''In this encoding system, for each 8-bit byte, the first bit is 1 if there are more bytes, and 0 is this is the last one.
     The next 7 bits are data. These 7-bit sections represent the data in Little endian order. For example, suppose the data is
     aaaaaaabbbbbbbccccccc (each of these sections is 7 bits). It will be encoded as:
     1ccccccc 1bbbbbbb 0aaaaaaa
-    
+
     This encoding is used in youtube parameters to encode offsets and to encode the length for length-prefixed data.
     See https://developers.google.com/protocol-buffers/docs/encoding#varints for more info.'''
     needed_bytes = ceil(offset.bit_length()/7) or 1 # (0).bit_length() returns 0, but we need 1 in that case.
@@ -20,20 +20,20 @@ def varint_encode(offset):
         encoded_bytes[i] = (offset & 127) | 128  # 7 least significant bits
         offset = offset >> 7
     encoded_bytes[-1] = offset & 127 # leave first bit as zero for last byte
-    
+
     return bytes(encoded_bytes)
 
-    
+
 def varint_decode(encoded):
     decoded = 0
     for i, byte in enumerate(encoded):
         decoded |= (byte & 127) << 7*i
-        
+
         if not (byte & 128):
             break
     return decoded
 
-    
+
 def string(field_number, data):
     data = as_bytes(data)
     return _proto_field(2, field_number, varint_encode(len(data)) + data)
@@ -41,20 +41,20 @@ nested = string
 
 def uint(field_number, value):
     return _proto_field(0, field_number, varint_encode(value))
-    
 
-    
-    
+
+
+
 def _proto_field(wire_type, field_number, data):
     ''' See https://developers.google.com/protocol-buffers/docs/encoding#structure '''
     return varint_encode( (field_number << 3) | wire_type) + data
 
 
-    
+
 def percent_b64encode(data):
     return base64.urlsafe_b64encode(data).replace(b'=', b'%3D')
-    
-    
+
+
 def unpadded_b64encode(data):
     return base64.urlsafe_b64encode(data).replace(b'=', b'')
 
@@ -81,7 +81,7 @@ def read_varint(data):
         i += 1
     return result
 
-                                
+
 def read_group(data, end_sequence):
     start = data.tell()
     index = data.original.find(end_sequence, start)
@@ -101,7 +101,7 @@ def read_protobuf(data):
             break
         wire_type = tag & 7
         field_number = tag >> 3
-        
+
         if wire_type == 0:
             value = read_varint(data)
         elif wire_type == 1:
diff --git a/youtube/static/comments.css b/youtube/static/comments.css
index 65e2cbe..b177a4f 100644
--- a/youtube/static/comments.css
+++ b/youtube/static/comments.css
@@ -1,4 +1,4 @@
-.video-metadata{    
+.video-metadata{
     display: grid;
     grid-template-columns: auto 1fr;
     grid-template-rows: auto auto 1fr auto;
@@ -124,6 +124,23 @@
     grid-column-gap: 10px;
 }
 
+details.replies > summary{
+    background-color: var(--interface-color);
+    border-style: outset;
+    border-width: 1px;
+    font-weight: bold;
+    padding-bottom: 0px;
+}
+
+.replies-open-new-tab{
+    display: inline-block;
+    margin-top: 5px;
+}
+
+details.replies .comment{
+    width: 600px;
+}
+
 .more-comments{
     justify-self:center;
     margin-top:10px;
diff --git a/youtube/static/js/common.js b/youtube/static/js/common.js
index 2db4390..20cfddd 100644
--- a/youtube/static/js/common.js
+++ b/youtube/static/js/common.js
@@ -41,9 +41,7 @@ function doXhr(url, callback=null) {
     var xhr = new XMLHttpRequest();
     xhr.open("GET", url);
     xhr.onload = (e) => {
-      let ok = xhr.status >= 200 && xhr.status < 300;
-      if (ok) callback(e.currentTarget.response);
-      else alert(`${xhr.responseURL} status code: ${xhr.status}`);
+      callback(e.currentTarget.response);
     }
     xhr.send();
     return xhr;
diff --git a/youtube/templates/base.html b/youtube/templates/base.html
index 4fc48cf..3d9f1e9 100644
--- a/youtube/templates/base.html
+++ b/youtube/templates/base.html
@@ -4,12 +4,9 @@
         <meta charset="utf-8">
         <title>{{ page_title }}</title>
         <meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline'; media-src 'self' https://*.googlevideo.com;
-            {% if not settings.proxy_images %}
-                img-src https://*.googleusercontent.com https://*.ggpht.com https://*.ytimg.com;
-            {% endif %}">
-
+            {{ "img-src 'self' https://*.googleusercontent.com https://*.ggpht.com https://*.ytimg.com;" if not settings.proxy_images else "" }}">
         <link href="{{ theme_path }}" type="text/css" rel="stylesheet">
-        <link href="/youtube.com/static/shared.css" type="text/css" rel="stylesheet">
+        <link href="/youtube.com/shared.css" type="text/css" rel="stylesheet">
         <link href="/youtube.com/static/comments.css" type="text/css" rel="stylesheet">
         <link href="/youtube.com/static/favicon.ico" type="image/x-icon" rel="icon">
         <link title="Youtube local" href="/youtube.com/opensearch.xml" rel="search" type="application/opensearchdescription+xml">
diff --git a/youtube/templates/channel.html b/youtube/templates/channel.html
index a0cdff9..dddbff1 100644
--- a/youtube/templates/channel.html
+++ b/youtube/templates/channel.html
@@ -34,11 +34,11 @@
         main .channel-tabs{
             grid-row:2;
             grid-column: 1 / span 2;
-            
+
             display:grid;
             grid-auto-flow: column;
             justify-content:start;
-            
+
             background-color: var(--interface-color);
             padding: 3px;
             padding-left: 6px;
@@ -103,7 +103,7 @@
         }
 {% endblock style %}
 
-{% block main %}     
+{% block main %}
     <img class="avatar" src="{{ avatar }}">
     <div class="summary">
         <h2 class="title">{{ channel_name }}</h2>
diff --git a/youtube/templates/comments.html b/youtube/templates/comments.html
index 9d93b8c..32a67ad 100644
--- a/youtube/templates/comments.html
+++ b/youtube/templates/comments.html
@@ -25,6 +25,7 @@
                 {% if settings.use_comments_js and comment['reply_count'] %}
                     <details class="replies" src="{{ comment['replies_url'] }}">
                         <summary>{{ comment['view_replies_text'] }}</summary>
+                        <a href="{{ comment['replies_url'] }}" class="replies-open-new-tab" target="_blank">Open in new tab</a>
                         <div class="comment_page">loading..</div>
                     </details>
                 {% else %}
diff --git a/youtube/templates/error.html b/youtube/templates/error.html
index 2f94afa..c3f58b0 100644
--- a/youtube/templates/error.html
+++ b/youtube/templates/error.html
@@ -1,29 +1,8 @@
 {% set page_title = 'Error' %}
-{% extends "base.html" %}
 
-{% block style %}
-    h1{
-        font-size: 2rem;
-        font-weight: normal;
-    }
-    #error-box, #error-message{
-        background-color: var(--interface-color);
-        width: 80%;
-        margin: auto;
-        margin-top: 20px;
-        padding: 5px;
-    }
-    #error-box > div, #error-box > p, #error-box > h1{
-        white-space: pre-wrap;
-        margin-bottom: 10px;
-    }
-    .code-box{
-        padding: 5px;
-        border-style:solid;
-        border-width:1px;
-        border-radius:5px;
-    }
-{% endblock style %}
+{% if not slim %}
+    {% extends "base.html" %}
+{% endif %}
 
 {% block main %}
     {% if traceback %}
diff --git a/youtube/templates/local_playlist.html b/youtube/templates/local_playlist.html
index 7ba0642..803c4dc 100644
--- a/youtube/templates/local_playlist.html
+++ b/youtube/templates/local_playlist.html
@@ -25,7 +25,7 @@
         }
 {% endblock style %}
 
-{% block main %}   
+{% block main %}
     <div class="playlist-metadata">
         <h2 class="playlist-title">{{ playlist_name }}</h2>
         <input type="hidden" name="playlist_page" value="{{ playlist_name }}" form="playlist-edit">
diff --git a/youtube/templates/playlist.html b/youtube/templates/playlist.html
index f34f140..af86c82 100644
--- a/youtube/templates/playlist.html
+++ b/youtube/templates/playlist.html
@@ -6,7 +6,7 @@
         width: 800px;
         margin:auto;
     }
-        
+
     .playlist-metadata{
         display:grid;
         grid-template-columns: 0fr 1fr;
@@ -44,7 +44,7 @@
         display: grid;
         grid-auto-rows: 0fr;
         grid-row-gap: 10px;
-        
+
     }
 {% endblock style %}
 
@@ -61,7 +61,7 @@
         <div class="playlist-description">{{ common_elements.text_runs(description) }}</div>
     </div>
 
-    <div id="results">          
+    <div id="results">
         {% for info in video_list %}
             {{ common_elements.item(info) }}
         {% endfor %}
diff --git a/youtube/static/shared.css b/youtube/templates/shared.css
index 7dd16e2..2288a34 100644
--- a/youtube/static/shared.css
+++ b/youtube/templates/shared.css
@@ -12,17 +12,17 @@ address{
 }
 
 html{
-    font-family: "liberation serif", "times new roman", calibri, carlito, serif;
+    font-family: {{ font_family }};
 }
 
 body{
     margin:0;
     padding: 0;
     color:var(--text-color);
-    
-    
+
+
     background-color:var(--background-color);
-    
+
     min-height:100vh;
     display: flex;
     flex-direction: column;
@@ -141,7 +141,7 @@ body{
 .item-list{
     display: grid;
     grid-row-gap: 10px;
-    
+
 }
 
 
@@ -164,7 +164,7 @@ body{
 .item-box{
     display: inline-flex;
     flex-direction: row;
-    /* prevent overflow due to long titles with no spaces: 
+    /* prevent overflow due to long titles with no spaces:
     https://stackoverflow.com/a/43312314 */
     min-width: 0;
 }
@@ -185,7 +185,7 @@ body{
         align-content: start;
         grid-template-columns: auto 1fr;
         grid-template-rows: auto auto auto auto 1fr;
-        /* prevent overflow due to long titles with no spaces: 
+        /* prevent overflow due to long titles with no spaces:
         https://stackoverflow.com/a/43312314 */
         min-width: 0;
     }
@@ -308,7 +308,7 @@ body{
     justify-content: center;
     display: grid;
     grid-auto-columns: 40px;
-    grid-auto-flow: column; 
+    grid-auto-flow: column;
     height: 40px;
 }
 .next-previous-button-row{
@@ -334,3 +334,26 @@ body{
     padding: 2px;
     justify-self: start;
 }
+
+/* error page stuff */
+h1{
+    font-size: 2rem;
+    font-weight: normal;
+}
+#error-box, #error-message{
+    background-color: var(--interface-color);
+    width: 80%;
+    margin: auto;
+    margin-top: 20px;
+    padding: 5px;
+}
+#error-box > div, #error-box > p, #error-box > h1{
+    white-space: pre-wrap;
+    margin-bottom: 10px;
+}
+.code-box{
+    padding: 5px;
+    border-style:solid;
+    border-width:1px;
+    border-radius:5px;
+}
diff --git a/youtube/templates/watch.html b/youtube/templates/watch.html
index 319c314..b6faf21 100644
--- a/youtube/templates/watch.html
+++ b/youtube/templates/watch.html
@@ -14,18 +14,6 @@
         text-decoration: underline;
     }
 
-    details.replies > summary{
-        background-color: var(--interface-color);
-        border-style: outset;
-        border-width: 1px;
-        font-weight: bold;
-        padding-bottom: 0px;
-    }
-
-    details.replies .comment{
-        width: 600px;
-    }
-
     .playability-error{
         height: 360px;
         width: 640px;
diff --git a/youtube/watch.py b/youtube/watch.py
index 1fa952c..8ef9448 100644
--- a/youtube/watch.py
+++ b/youtube/watch.py
@@ -226,15 +226,19 @@ def extract_info(video_id, use_invidious, playlist_id=None, index=None):
         return {'error': 'Failed to parse json response'}
     info = yt_data_extract.extract_watch_info(polymer_json)
 
-    # age restriction bypass
-    if info['age_restricted']:
-        print('Fetching age restriction bypass page')
+    # request player if it's missing
+    # see https://github.com/user234683/youtube-local/issues/22#issuecomment-706395160
+    if info['age_restricted'] or info['player_response_missing']:
+        if info['age_restricted']:
+            print('Age restricted video. Fetching get_video_info page')
+        else:
+            print('Missing player. Fetching get_video_info page')
         data = {
             'video_id': video_id,
             'eurl': 'https://youtube.googleapis.com/v/' + video_id,
         }
         url = 'https://www.youtube.com/get_video_info?' + urllib.parse.urlencode(data)
-        video_info_page = util.fetch_url(url, debug_name='get_video_info', report_text='Fetched age restriction bypass page').decode('utf-8')
+        video_info_page = util.fetch_url(url, debug_name='get_video_info', report_text='Fetched get_video_info page').decode('utf-8')
         yt_data_extract.update_with_age_restricted_info(info, video_info_page)
 
     # signature decryption
diff --git a/youtube/yt_data_extract/common.py b/youtube/yt_data_extract/common.py
index 2d3b637..683b1c6 100644
--- a/youtube/yt_data_extract/common.py
+++ b/youtube/yt_data_extract/common.py
@@ -90,15 +90,20 @@ def remove_redirect(url):
         return urllib.parse.parse_qs(query_string)['q'][0]
     return url
 
-youtube_url_re = re.compile(r'^(?:(?:(?:https?:)?//)?(?:www\.)?youtube\.com)?(/.*)$')
+norm_url_re = re.compile(r'^(?:(?:https?:)?//)?((?:[\w-]+\.)+[\w-]+)?(/.*)$')
 def normalize_url(url):
+    '''Insert https, resolve relative paths for youtube.com, and put www. infront of youtube.com'''
     if url is None:
         return None
-    match = youtube_url_re.fullmatch(url)
+    match = norm_url_re.fullmatch(url)
     if match is None:
-        raise Exception()
+        raise Exception(url)
 
-    return 'https://www.youtube.com' + match.group(1)
+    domain = match.group(1) or 'www.youtube.com'
+    if domain == 'youtube.com':
+        domain = 'www.youtube.com'
+
+    return 'https://' + domain + match.group(2)
 
 def _recover_urls(runs):
     for run in runs:
@@ -240,11 +245,11 @@ def extract_item_info(item, additional_info={}):
         ))
         info['author_url'] = ('https://www.youtube.com/channel/' + info['author_id']) if info['author_id'] else None
     info['description'] = extract_formatted_text(multi_get(item, 'descriptionSnippet', 'descriptionText'))
-    info['thumbnail'] = multi_deep_get(item,
+    info['thumbnail'] = normalize_url(multi_deep_get(item,
         ['thumbnail', 'thumbnails', 0, 'url'],      # videos
         ['thumbnails', 0, 'thumbnails', 0, 'url'],  # playlists
         ['thumbnailRenderer', 'showCustomThumbnailRenderer', 'thumbnail', 'thumbnails', 0, 'url'], # shows
-    )
+    ))
 
     info['badges'] = []
     for badge_node in multi_get(item, 'badges', 'ownerBadges', default=()):
@@ -290,7 +295,7 @@ def extract_item_info(item, additional_info={}):
         info['duration'] = extract_str(item.get('lengthText'))
 
         # if it's an item in a playlist, get its index
-        if 'index' in item: # url has wrong index on playlist page 
+        if 'index' in item: # url has wrong index on playlist page
             info['index'] = extract_int(item.get('index'))
         elif 'indexText' in item:
             # Current item in playlist has ▶ instead of the actual index, must
diff --git a/youtube/yt_data_extract/everything_else.py b/youtube/yt_data_extract/everything_else.py
index 5bb8709..b4b612d 100644
--- a/youtube/yt_data_extract/everything_else.py
+++ b/youtube/yt_data_extract/everything_else.py
@@ -49,10 +49,10 @@ def extract_channel_info(polymer_json, tab):
     if info['short_description'] and len(info['short_description']) > 730:
         info['short_description'] = info['short_description'][0:730] + '...'
     info['channel_name'] = metadata.get('title')
-    info['avatar'] = multi_deep_get(metadata,
+    info['avatar'] = normalize_url(multi_deep_get(metadata,
         ['avatar', 'thumbnails', 0, 'url'],
         ['thumbnail', 'thumbnails', 0, 'url'],
-    )
+    ))
     channel_url = multi_get(metadata, 'urlCanonical', 'channelUrl')
     if channel_url:
         channel_id = get(channel_url.rstrip('/').split('/'), -1)
@@ -164,7 +164,7 @@ def extract_playlist_metadata(polymer_json):
     metadata['video_count'] = extract_int(header.get('numVideosText'))
     metadata['description'] = extract_str(header.get('descriptionText'), default='')
     metadata['author'] = extract_str(header.get('ownerText'))
-    metadata['author_id'] = multi_deep_get(header, 
+    metadata['author_id'] = multi_deep_get(header,
         ['ownerText', 'runs', 0, 'navigationEndpoint', 'browseEndpoint', 'browseId'],
         ['ownerEndpoint', 'browseEndpoint', 'browseId'])
     if metadata['author_id']:
@@ -263,13 +263,13 @@ def extract_comments_info(polymer_json):
 
         # These 3 are sometimes absent, likely because the channel was deleted
         comment_info['author'] = extract_str(comment_renderer.get('authorText'))
-        comment_info['author_url'] = deep_get(comment_renderer,
-            'authorEndpoint', 'commandMetadata', 'webCommandMetadata', 'url')
+        comment_info['author_url'] = normalize_url(deep_get(comment_renderer,
+            'authorEndpoint', 'commandMetadata', 'webCommandMetadata', 'url'))
         comment_info['author_id'] = deep_get(comment_renderer,
             'authorEndpoint', 'browseEndpoint', 'browseId')
 
-        comment_info['author_avatar'] = deep_get(comment_renderer,
-            'authorThumbnail', 'thumbnails', 0, 'url')
+        comment_info['author_avatar'] = normalize_url(deep_get(
+            comment_renderer, 'authorThumbnail', 'thumbnails', 0, 'url'))
         comment_info['id'] = comment_renderer.get('commentId')
         comment_info['text'] = extract_formatted_text(comment_renderer.get('contentText'))
         comment_info['time_published'] = extract_str(comment_renderer.get('publishedTimeText'))
diff --git a/youtube/yt_data_extract/watch_extraction.py b/youtube/yt_data_extract/watch_extraction.py
index 340a367..5e57c15 100644
--- a/youtube/yt_data_extract/watch_extraction.py
+++ b/youtube/yt_data_extract/watch_extraction.py
@@ -172,7 +172,7 @@ def _extract_watch_info_mobile(top_level):
         else:
             info['playlist'] = {}
             info['playlist']['title'] = playlist.get('title')
-            info['playlist']['author'] = extract_str(multi_get(playlist, 
+            info['playlist']['author'] = extract_str(multi_get(playlist,
                 'ownerName', 'longBylineText', 'shortBylineText', 'ownerText'))
             author_id = deep_get(playlist, 'longBylineText', 'runs', 0,
                 'navigationEndpoint', 'browseEndpoint', 'browseId')
@@ -447,7 +447,8 @@ def _extract_playability_error(info, player_response, error_prefix=''):
 
 SUBTITLE_FORMATS = ('srv1', 'srv2', 'srv3', 'ttml', 'vtt')
 def extract_watch_info(polymer_json):
-    info = {'playability_error': None, 'error': None}
+    info = {'playability_error': None, 'error': None,
+        'player_response_missing': None}
 
     if isinstance(polymer_json, dict):
         top_level = polymer_json
@@ -477,6 +478,10 @@ def extract_watch_info(polymer_json):
     else:
         embedded_player_response = {}
 
+    # see https://github.com/user234683/youtube-local/issues/22#issuecomment-706395160
+    info['player_response_missing'] = not (
+        player_response or embedded_player_response)
+
     # captions
     info['automatic_caption_languages'] = []
     info['manual_caption_languages'] = []
@@ -580,7 +585,8 @@ def get_caption_url(info, language, format, automatic=False, translation_languag
     return url
 
 def update_with_age_restricted_info(info, video_info_page):
-    ERROR_PREFIX = 'Error bypassing age-restriction: '
+    '''Inserts urls from 'player_response' in get_video_info page'''
+    ERROR_PREFIX = 'Error getting missing player or bypassing age-restriction: '
 
     video_info = urllib.parse.parse_qs(video_info_page)
     player_response = deep_get(video_info, 'player_response', 0)