pad videos

main.py

@@ -61,7 +61,14 @@ async def send_post(post: E621Post, tag_list: List[str]):
                         with open(src_path, 'wb') as webm:
                             webm.write(file.read())
                         ffmpeg\
-                            .input(str(src_path))\
+                            .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()
                         s3 = boto3.client('s3', aws_access_key_id=os.environ['AWS_ACCESS_KEY'], aws_secret_access_key=os.environ['AWS_SECRET_KEY'])