diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index 6fb5c88740..c91f6eeb87 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -2026,6 +2026,8 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 if (string.Equals(audioCodec, "aac", StringComparison.OrdinalIgnoreCase)
                     || string.Equals(audioCodec, "mp3", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(audioCodec, "opus", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(audioCodec, "vorbis", StringComparison.OrdinalIgnoreCase)
                     || string.Equals(audioCodec, "ac3", StringComparison.OrdinalIgnoreCase)
                     || string.Equals(audioCodec, "eac3", StringComparison.OrdinalIgnoreCase))
                 {