diff --git a/main.py b/main.py
index b7f480e..ec0c52a 100644
--- a/main.py
+++ b/main.py
@@ -65,17 +65,15 @@ async def send_post(post: E621Post, tag_list: List[str]):
                         mp4_path = Path(td) / 'video.mp4'
                         with open(src_path, 'wb') as webm:
                             webm.write(file.read())
-                        ffmpeg\
-                            .input(str(src_path)) \
-                            .filter('pad', **{
-                                'width': 'ceil(iw/2)*2',
-                                'height': 'ceil(ih/2)*2',
-                                'x': '0',
-                                'y': '0',
-                                'color': 'Black'
-                            })\
-                            .output(str(mp4_path), vcodec='libx264', crf='26')\
-                            .run()
+                        video_input = ffmpeg\
+                            .input(str(src_path))
+                        cmd = video_input \
+                            .output(str(mp4_path),
+                                    vf='pad=width=ceil(iw/2)*2:height=ceil(ih/2)*2:x=0:y=0:color=Black',
+                                    vcodec='libx264',
+                                    crf='26')
+                        logging.info('ffmpeg ' + ' '.join(cmd.get_args()))
+                        cmd.run()
                         s3 = boto3.client('s3', aws_access_key_id=os.environ['AWS_ACCESS_KEY'], aws_secret_access_key=os.environ['AWS_SECRET_KEY'])
                         bucket = os.environ['AWS_S3_BUCKET']
                         upload_filename = f'e621-{post.id}-{int(time())}.mp4'