diff --git a/server/generate-thumb b/server/generate-thumb
deleted file mode 100755
index 87d7e02..0000000
--- a/server/generate-thumb
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env python3
-
-'''
-Generates thumbnails for posts from CLI. Useful for testing changes to
-thumbnail generators, and for weird inputs.
-'''
-
-import argparse
-import os.path
-import sys
-from szurubooru.func import posts
-
-def main():
-    parser = argparse.ArgumentParser('Starts szurubooru using waitress.')
-    parser.add_argument('post_id', metavar='POST', help='post to generate thumbnail for')
-    args = parser.parse_args()
-
-    try:
-        post = posts.get_post_by_id(args.post_id)
-        posts.generate_post_thumbnail(post)
-    except posts.PostNotFoundError:
-        pass
-    except:
-        raise
-
-if __name__ == '__main__':
-    main()
diff --git a/server/recheck-post-audio b/server/recheck-post-audio
new file mode 100755
index 0000000..c7200d3
--- /dev/null
+++ b/server/recheck-post-audio
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+'''
+Checks post audio and list disrepancies between the content and flags.
+'''
+
+from szurubooru import db, model, errors
+from szurubooru.func import files, images
+from szurubooru.func import posts as postfuncs
+
+def main():
+    post_list = (db.session
+        .query(model.Post)
+        .filter(model.Post.type == model.Post.TYPE_VIDEO)
+        .order_by(model.Post.post_id)
+        .all())
+
+    for post in post_list:
+        print('Checking post %d ...' % post.post_id, end='\r')
+        content = files.get(postfuncs.get_post_content_path(post))
+
+        has_existing_flag = model.Post.FLAG_SOUND in post.flags
+        try:
+            has_sound_data = images.Image(content).check_for_sound()
+        except errors.ProcessingError:
+            print('Post %d caused an error when checking for sound' % post.post_id)
+
+        if has_sound_data and not has_existing_flag:
+            print('Post %d has sound data but is not flagged' % post.post_id)
+        if not has_sound_data and has_existing_flag:
+            print('Post %d has no sound data but is flagged' % post.post_id)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/server/szurubooru/func/images.py b/server/szurubooru/func/images.py
index 6e88ab4..1a96dcc 100644
--- a/server/szurubooru/func/images.py
+++ b/server/szurubooru/func/images.py
@@ -164,8 +164,9 @@ class Image:
             '-y', '/dev/null',
         ], get_logs=True).decode('utf-8', errors='replace')
         log_match = re.search(r'.*volumedetect.*mean_volume: (.*) dB', log)
-        assert log_match
-        assert log_match.groups()
+        if not log_match or not log_match.groups():
+            raise errors.ProcessingError(
+                'A problem occured when trying to check for audio')
         meanvol = float(log_match.groups()[0])
 
         # -91.0 dB is the minimum for 16-bit audio, assume sound if > -80.0 dB