diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerTranscodingVideoRenderer.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerTranscodingVideoRenderer.java
index 545bbc6fc7..3122371b07 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerTranscodingVideoRenderer.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerTranscodingVideoRenderer.java
@@ -69,14 +69,12 @@ import java.nio.ByteBuffer;
       return;
     }
 
-    if (!ensureDecoderConfigured()) {
+    if (!ensureEncoderConfigured() || !ensureDecoderConfigured()) {
       return;
     }
 
-    if (ensureEncoderConfigured()) {
-      while (feedMuxerFromEncoder()) {}
-      while (feedEncoderFromDecoder()) {}
-    }
+    while (feedMuxerFromEncoder()) {}
+    while (feedEncoderFromDecoder()) {}
     while (feedDecoderFromInput()) {}
   }