diff --git a/library/src/main/java/com/google/android/exoplayer/extractor/ts/AdtsExtractor.java b/library/src/main/java/com/google/android/exoplayer/extractor/ts/AdtsExtractor.java
index f848d6214d..2bacf5d0c5 100644
--- a/library/src/main/java/com/google/android/exoplayer/extractor/ts/AdtsExtractor.java
+++ b/library/src/main/java/com/google/android/exoplayer/extractor/ts/AdtsExtractor.java
@@ -102,6 +102,10 @@ public final class AdtsExtractor implements Extractor {
         input.peekFully(scratch.data, 0, 4);
         scratchBits.setPosition(14);
         int frameSize = scratchBits.readBits(13);
+        // Either the stream is malformed OR we're not parsing an ADTS stream.
+        if (frameSize <= 6) {
+          return false;
+        }
         input.advancePeekPosition(frameSize - 6);
         validFramesSize += frameSize;
       }