diff --git a/library/src/main/java/com/google/android/exoplayer/extractor/mp4/AtomParsers.java b/library/src/main/java/com/google/android/exoplayer/extractor/mp4/AtomParsers.java
index 58d9b42283..da9ca10925 100644
--- a/library/src/main/java/com/google/android/exoplayer/extractor/mp4/AtomParsers.java
+++ b/library/src/main/java/com/google/android/exoplayer/extractor/mp4/AtomParsers.java
@@ -635,17 +635,17 @@ import java.util.List;
         // TODO: Choose the right AC-3 track based on the contents of dac3/dec3.
         // TODO: Add support for encryption (by setting out.trackEncryptionBoxes).
         parent.setPosition(Atom.HEADER_SIZE + childStartPosition);
-        out.mediaFormat = Ac3Util.parseAnnexFAc3Format(parent);
+        out.mediaFormat = Ac3Util.parseAnnexFAc3Format(parent, durationUs);
         return;
       } else if (atomType == Atom.TYPE_ec_3 && childAtomType == Atom.TYPE_dec3) {
         parent.setPosition(Atom.HEADER_SIZE + childStartPosition);
-        out.mediaFormat = Ac3Util.parseAnnexFEAc3Format(parent);
+        out.mediaFormat = Ac3Util.parseAnnexFEAc3Format(parent, durationUs);
         return;
       } else if ((atomType == Atom.TYPE_dtsc || atomType == Atom.TYPE_dtse
           || atomType == Atom.TYPE_dtsh || atomType == Atom.TYPE_dtsl)
           && childAtomType == Atom.TYPE_ddts) {
         out.mediaFormat = MediaFormat.createAudioFormat(mimeType, MediaFormat.NO_VALUE,
-            MediaFormat.NO_VALUE, channelCount, sampleRate, null);
+            MediaFormat.NO_VALUE, durationUs, channelCount, sampleRate, null);
         return;
       }
       childPosition += childAtomSize;
diff --git a/library/src/main/java/com/google/android/exoplayer/util/Ac3Util.java b/library/src/main/java/com/google/android/exoplayer/util/Ac3Util.java
index a041093510..37850bb05a 100644
--- a/library/src/main/java/com/google/android/exoplayer/util/Ac3Util.java
+++ b/library/src/main/java/com/google/android/exoplayer/util/Ac3Util.java
@@ -37,7 +37,7 @@ public final class Ac3Util {
    * Returns the AC-3 format given {@code data} containing the AC3SpecificBox according to
    * ETSI TS 102 366 Annex F.
    */
-  public static MediaFormat parseAnnexFAc3Format(ParsableByteArray data) {
+  public static MediaFormat parseAnnexFAc3Format(ParsableByteArray data, long durationUs) {
     // fscod (sample rate code)
     int fscod = (data.readUnsignedByte() & 0xC0) >> 6;
     int sampleRate = SAMPLE_RATES[fscod];
@@ -49,14 +49,14 @@ public final class Ac3Util {
       channelCount++;
     }
     return MediaFormat.createAudioFormat(MimeTypes.AUDIO_AC3, MediaFormat.NO_VALUE,
-        MediaFormat.NO_VALUE, channelCount, sampleRate, null);
+        MediaFormat.NO_VALUE, durationUs, channelCount, sampleRate, null);
   }
 
   /**
    * Returns the AC-3 format given {@code data} containing the EC3SpecificBox according to
    * ETSI TS 102 366 Annex F.
    */
-  public static MediaFormat parseAnnexFEAc3Format(ParsableByteArray data) {
+  public static MediaFormat parseAnnexFEAc3Format(ParsableByteArray data, long durationUs) {
     data.skipBytes(2); // Skip data_rate and num_ind_sub.
 
     // Read only the first substream.