diff --git a/server/szurubooru/app.py b/server/szurubooru/app.py
index bd870ac..da00d7f 100644
--- a/server/szurubooru/app.py
+++ b/server/szurubooru/app.py
@@ -40,7 +40,7 @@ def _on_not_found_error(ex, _request, _response, _params):
     raise falcon.HTTPNotFound(title='Not found', description=str(ex))
 
 def _on_processing_error(ex, _request, _response, _params):
-    raise falcon.HTTPNotFound(title='Processing error', description=str(ex))
+    raise falcon.HTTPBadRequest(title='Processing error', description=str(ex))
 
 def create_app():
     ''' Create a WSGI compatible App object. '''
diff --git a/server/szurubooru/util/images.py b/server/szurubooru/util/images.py
index 17b2a74..e94d675 100644
--- a/server/szurubooru/util/images.py
+++ b/server/szurubooru/util/images.py
@@ -38,11 +38,12 @@ class Image(object):
 
     def _execute(self, cli):
         proc = subprocess.Popen(
-            ['ffmpeg'] + cli,
+            ['ffmpeg', '-loglevel', '24'] + cli,
             stdout=subprocess.PIPE,
             stdin=subprocess.PIPE,
             stderr=subprocess.PIPE)
         out, err = proc.communicate(input=self.content)
         if proc.returncode != 0:
-            raise errors.ConversionError(err)
+            raise errors.ProcessingError(
+                'Error while processing image.\n' + err.decode('utf-8'))
         return out