diff --git a/libraries/exoplayer_hls/src/main/java/androidx/media3/exoplayer/hls/WebvttExtractor.java b/libraries/exoplayer_hls/src/main/java/androidx/media3/exoplayer/hls/WebvttExtractor.java
index dd0b4a9ada..22bd3ed9fe 100644
--- a/libraries/exoplayer_hls/src/main/java/androidx/media3/exoplayer/hls/WebvttExtractor.java
+++ b/libraries/exoplayer_hls/src/main/java/androidx/media3/exoplayer/hls/WebvttExtractor.java
@@ -121,7 +121,7 @@ public final class WebvttExtractor implements Extractor {
         parseSubtitlesDuringExtraction
             ? new SubtitleTranscodingExtractorOutput(output, subtitleParserFactory)
             : output;
-    output.seekMap(new SeekMap.Unseekable(C.TIME_UNSET));
+    this.output.seekMap(new SeekMap.Unseekable(C.TIME_UNSET));
   }
 
   @Override
diff --git a/libraries/extractor/src/main/java/androidx/media3/extractor/mkv/MatroskaExtractor.java b/libraries/extractor/src/main/java/androidx/media3/extractor/mkv/MatroskaExtractor.java
index 34bafec956..6519eb1891 100644
--- a/libraries/extractor/src/main/java/androidx/media3/extractor/mkv/MatroskaExtractor.java
+++ b/libraries/extractor/src/main/java/androidx/media3/extractor/mkv/MatroskaExtractor.java
@@ -561,7 +561,6 @@ public class MatroskaExtractor implements Extractor {
 
   @Override
   public final void init(ExtractorOutput output) {
-    extractorOutput = output;
     extractorOutput =
         parseSubtitlesDuringExtraction
             ? new SubtitleTranscodingExtractorOutput(output, subtitleParserFactory)