diff --git a/files/helpers.py b/files/helpers.py
index bb050e6..3213c0b 100644
--- a/files/helpers.py
+++ b/files/helpers.py
@@ -660,13 +660,13 @@ def produce_ffmpeg_commands(media_file, media_info, resolution, codec, output_fi
 
     if codec == "h264":
         encoder = "libx264"
-        ext = "mp4"
+        # ext = "mp4"
     elif codec in ["h265", "hevc"]:
         encoder = "libx265"
-        ext = "mp4"
+        # ext = "mp4"
     elif codec == "vp9":
         encoder = "libvpx-vp9"
-        ext = "webm"
+        # ext = "webm"
     else:
         return False
 
diff --git a/files/models.py b/files/models.py
index 554c972..1fbdbc2 100644
--- a/files/models.py
+++ b/files/models.py
@@ -537,7 +537,7 @@ class Media(models.Model):
             "-y",
             tf,
         ]
-        ret = helpers.run_command(command)
+        helpers.run_command(command)
 
         if os.path.exists(tf) and helpers.get_file_type(tf) == "image":
             with open(tf, "rb") as f:
@@ -657,7 +657,6 @@ class Media(models.Model):
         """Property used on serializers"""
 
         ret = {}
-        chunks_ret = {}
 
         if self.media_type not in ["video"]:
             return ret
diff --git a/files/tasks.py b/files/tasks.py
index 8985dbd..6b7d066 100644
--- a/files/tasks.py
+++ b/files/tasks.py
@@ -391,7 +391,7 @@ def produce_sprite_from_video(friendly_token):
                 tmpdirname,
                 output_name,
             )
-            ret = subprocess.run(cmd, stdout=subprocess.PIPE, shell=True)
+            subprocess.run(cmd, stdout=subprocess.PIPE, shell=True)
             if os.path.exists(output_name) and get_file_type(output_name) == "image":
                 with open(output_name, "rb") as f:
                     myfile = File(f)
@@ -432,11 +432,11 @@ def create_hls(friendly_token):
             output_dir = os.path.join(settings.HLS_DIR, p + produce_friendly_token())
         files = " ".join([f.media_file.path for f in encodings if f.media_file])
         cmd = "{0} --segment-duration=4 --output-dir={1} {2}".format(settings.MP4HLS_COMMAND, output_dir, files)
-        ret = subprocess.run(cmd, stdout=subprocess.PIPE, shell=True)
+        subprocess.run(cmd, stdout=subprocess.PIPE, shell=True)
         if existing_output_dir:
             # override content with -T !
             cmd = "cp -rT {0} {1}".format(output_dir, existing_output_dir)
-            ret = subprocess.run(cmd, stdout=subprocess.PIPE, shell=True)
+            subprocess.run(cmd, stdout=subprocess.PIPE, shell=True)
             shutil.rmtree(output_dir)
             output_dir = existing_output_dir
         pp = os.path.join(output_dir, "master.m3u8")
@@ -626,7 +626,7 @@ def save_user_action(user_or_session, friendly_token=None, action="watch", extra
                     rating_category_id=rating_category,
                     score=score,
                 )
-        except Exception as exc:
+        except Exception:
             # TODO: more specific handling, for errors in score, or
             # rating_category?
             return False
diff --git a/files/views.py b/files/views.py
index 41dcd6c..021c991 100644
--- a/files/views.py
+++ b/files/views.py
@@ -210,8 +210,6 @@ def embed_media(request):
     if not media:
         return HttpResponseRedirect("/")
 
-    user_or_session = get_user_or_session(request)
-
     context = {}
     context["media"] = friendly_token
     return render(request, "cms/embed.html", context)
diff --git a/setup.cfg b/setup.cfg
index e02d407..5422bc9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,4 +1,4 @@
 [flake8]
 exclude = .git,*migrations*
 max-line-length = 119
-ignore=F401,F403,W503,E711,E302,E201,E501,E303,E231,F841,E722
+ignore=F401,F403,E501,W503