diff --git a/lib/src/main/java/net/ypresto/androidtranscoder/engine/AudioTrackTranscoder.java b/lib/src/main/java/net/ypresto/androidtranscoder/engine/AudioTrackTranscoder.java
index 47e0a61d..99034ef0 100644
--- a/lib/src/main/java/net/ypresto/androidtranscoder/engine/AudioTrackTranscoder.java
+++ b/lib/src/main/java/net/ypresto/androidtranscoder/engine/AudioTrackTranscoder.java
@@ -79,7 +79,7 @@ public void setup() {
 
     @Override
     public MediaFormat getDeterminedFormat() {
-        return mInputFormat;
+        return mActualOutputFormat;
     }
 
     @Override