diff --git a/CHANGES.md b/CHANGES.md
index 0aa4ae0..7d00d1f 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,4 +1,9 @@
-### 0.25.11 (2021-10-12 17:00:00 UTC)
+### 0.25.12 (2021-10-17 20:30:00 UTC)
+
+* Fix large sickbeard db's that occured from using subtitle settings
+
+
+### 0.25.11 (2021-10-12 17:00:00 UTC)
 
 * Fix edit-show alert "set master" malfunction on shows with no master to edit
 
diff --git a/sickbeard/__init__.py b/sickbeard/__init__.py
index 6c70c12..cd67f86 100755
--- a/sickbeard/__init__.py
+++ b/sickbeard/__init__.py
@@ -1295,6 +1295,12 @@ def init_stage_1(console_logging):
     SUBTITLES_SERVICES_AUTH = [k.split(':::') for k in
                                check_setting_str(CFG, 'Subtitles', 'subtitles_services_auth', ':::').split('|||')
                                if k]
+    try:
+        # unlikely to happen, but did happen once, so added here as defensive
+        dct_cfg = sg_helpers.ast_eval(check_setting_str(CFG, 'Subtitles', 'subtitles_services_auth', ':::'), {})
+        SUBTITLES_SERVICES_AUTH = [[dct_cfg['os_user'], dct_cfg['os_pass']]]
+    except (BaseException, Exception):
+        pass
     SUBTITLES_DEFAULT = bool(check_setting_int(CFG, 'Subtitles', 'subtitles_default', 0))
     SUBTITLES_HISTORY = bool(check_setting_int(CFG, 'Subtitles', 'subtitles_history', 0))
     SUBTITLES_FINDER_INTERVAL = check_setting_int(CFG, 'Subtitles', 'subtitles_finder_interval', 1)
diff --git a/sickbeard/databases/mainDB.py b/sickbeard/databases/mainDB.py
index ce6eaf9..15e6f1a 100644
--- a/sickbeard/databases/mainDB.py
+++ b/sickbeard/databases/mainDB.py
@@ -18,6 +18,7 @@
 
 import datetime
 import os.path
+import re
 
 from .. import db, common, logger
 from ..name_parser.parser import NameParser, InvalidNameException, InvalidShowException
@@ -43,6 +44,41 @@ class MainSanityCheck(db.DBSanityCheck):
         self.fix_orphan_not_found_show()
         self.fix_fallback_mapping()
         self.fix_indexer_mapping_tvdb()
+        self.fix_episode_subtitles()
+
+    def fix_episode_subtitles(self):
+        if not self.connection.has_flag('fix_episode_subtitles'):
+            cleaned = False
+            cl = []
+
+            ep_result = self.connection.select(
+                'SELECT episode_id'
+                ' FROM tv_episodes'
+                ' WHERE subtitles LIKE "%,%"')
+
+            for cur_ep in ep_result:
+                if not cleaned:
+                    logger.log('Removing duplicate subtitles data in TV Episodes table, this WILL take some time')
+                    cleaned = True
+
+                sql_result = self.connection.select(
+                    'SELECT SUBSTR(REPLACE(subtitles, ",,", ""), -2000) AS truncated_langs'
+                    ' FROM tv_episodes'
+                    ' WHERE episode_id = ? LIMIT 1', [cur_ep['episode_id']])
+
+                for cur_result in sql_result:
+                    raw_langs = re.sub(r',+', '', cur_result['truncated_langs'])
+                    subt_value = ','.join(re.findall('[a-z]{2}', raw_langs))
+                    cl.append(['UPDATE tv_episodes SET subtitles = ? WHERE episode_id = ?',
+                               [(subt_value, '')[bool(len(raw_langs) % 2)], cur_ep['episode_id']]])
+
+            if 0 < len(cl):
+                self.connection.mass_action(cl)
+
+                logger.log(u'Performing a vacuum on the database.', logger.DEBUG)
+                self.connection.action('VACUUM')
+
+            self.connection.set_flag('fix_episode_subtitles')
 
     def fix_indexer_mapping_tvdb(self):
         if not self.connection.has_flag('fix_indexer_mapping_tvdb'):
diff --git a/sickbeard/tv.py b/sickbeard/tv.py
index ff6ff1f..b9e9dfa 100644
--- a/sickbeard/tv.py
+++ b/sickbeard/tv.py
@@ -4086,7 +4086,11 @@ class TVEpisode(TVEpisodeBase):
         self._runtime = show_result['runtime']
         self._season = season
         self._status = self._status if None is show_result['status'] else int(show_result['status'])
-        self._subtitles = show_result['subtitles'] and show_result['subtitles'] or show_result['subtitles'].split(',')
+        subt_value = show_result['subtitles']
+        if ',,' in subt_value:  # a defensive fix for a data issue
+            subt_value = re.sub(r',+', '', subt_value)
+            subt_value = ('', subt_value)[2 == len(subt_value)]
+        self._subtitles = subt_value and subt_value.split(',') or []
         self._subtitles_lastsearch = show_result['subtitles_lastsearch']
         self._subtitles_searchcount = show_result['subtitles_searchcount']
         self._timestamp = show_result['timestamp'] or self._make_timestamp()