diff --git a/api/src/processing/services/youtube.js b/api/src/processing/services/youtube.js
index 7551765e..cf83fbd0 100644
--- a/api/src/processing/services/youtube.js
+++ b/api/src/processing/services/youtube.js
@@ -18,8 +18,8 @@ const codecMatch = {
     },
     av1: {
         videoCodec: "av01",
-        audioCodec: "mp4a",
-        container: "mp4"
+        audioCodec: "opus",
+        container: "webm"
     },
     vp9: {
         videoCodec: "vp9",