diff --git a/src/cogs/ffmeta.py b/src/cogs/ffmeta.py
index c0a71b7..017bc2f 100644
--- a/src/cogs/ffmeta.py
+++ b/src/cogs/ffmeta.py
@@ -268,7 +268,7 @@ class FFMeta(commands.Cog):
                 "-shortest",
                 "-y",
                 "-f",
-                "mkv",
+                "webm",
                 "pipe:1",
                 stdout=asyncio.subprocess.PIPE,
                 stderr=asyncio.subprocess.PIPE,