diff --git a/lib/media/segment_utils.js b/lib/media/segment_utils.js
index d6873d97a4..84bf64e75b 100644
--- a/lib/media/segment_utils.js
+++ b/lib/media/segment_utils.js
@@ -179,6 +179,7 @@ shaka.media.SegmentUtils = class {
           break;
         case 'ac-3':
         case 'ec-3':
+        case 'ac-4':
         case 'opus':
         case 'flac':
           audioCodecs.push(codecLC);
@@ -207,6 +208,19 @@ shaka.media.SegmentUtils = class {
     /** @type {?string} */
     let baseBox;
 
+    const genericAudioBox = (box) => {
+      const parsedAudioSampleEntryBox =
+          shaka.util.Mp4BoxParsers.audioSampleEntry(box.reader);
+      channelCount = parsedAudioSampleEntryBox.channelCount;
+      sampleRate = parsedAudioSampleEntryBox.sampleRate;
+      codecBoxParser(box);
+    };
+
+    const genericVideoBox = (box) => {
+      baseBox = box.name;
+      Mp4Parser.visualSampleEntry(box);
+    };
+
     new Mp4Parser()
         .box('moov', Mp4Parser.children)
         .box('trak', Mp4Parser.children)
@@ -235,9 +249,10 @@ shaka.media.SegmentUtils = class {
         // AUDIO
         // These are the various boxes that signal a codec.
         .box('mp4a', (box) => {
-          const parsedMP4ABox = shaka.util.Mp4BoxParsers.parseMP4A(box.reader);
-          channelCount = parsedMP4ABox.channelCount;
-          sampleRate = parsedMP4ABox.sampleRate;
+          const parsedAudioSampleEntryBox =
+              shaka.util.Mp4BoxParsers.audioSampleEntry(box.reader);
+          channelCount = parsedAudioSampleEntryBox.channelCount;
+          sampleRate = parsedAudioSampleEntryBox.sampleRate;
           if (box.reader.hasMoreData()) {
             Mp4Parser.children(box);
           } else {
@@ -249,54 +264,24 @@ shaka.media.SegmentUtils = class {
           audioCodecs.push(parsedESDSBox.codec);
           hasAudio = true;
         })
-        .box('ac-3', codecBoxParser)
-        .box('ec-3', codecBoxParser)
-        .box('opus', codecBoxParser)
-        .box('Opus', codecBoxParser)
-        .box('fLaC', codecBoxParser)
+        .box('ac-3', genericAudioBox)
+        .box('ec-3', genericAudioBox)
+        .box('ac-4', genericAudioBox)
+        .box('Opus', genericAudioBox)
+        .box('fLaC', genericAudioBox)
 
         // VIDEO
         // These are the various boxes that signal a codec.
-        .box('avc1', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('avc3', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('hev1', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('hvc1', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('dva1', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('dvav', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('dvh1', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('dvhe', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('vp09', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
-        .box('av01', (box) => {
-          baseBox = box.name;
-          Mp4Parser.visualSampleEntry(box);
-        })
+        .box('avc1', genericVideoBox)
+        .box('avc3', genericVideoBox)
+        .box('hev1', genericVideoBox)
+        .box('hvc1', genericVideoBox)
+        .box('dva1', genericVideoBox)
+        .box('dvav', genericVideoBox)
+        .box('dvh1', genericVideoBox)
+        .box('dvhe', genericVideoBox)
+        .box('vp09', genericVideoBox)
+        .box('av01', genericVideoBox)
         .box('avcC', (box) => {
           let codecBase = baseBox || '';
           switch (baseBox) {
diff --git a/lib/util/mp4_box_parsers.js b/lib/util/mp4_box_parsers.js
index 7c8c32dc24..2f9469f9e6 100644
--- a/lib/util/mp4_box_parsers.js
+++ b/lib/util/mp4_box_parsers.js
@@ -275,11 +275,11 @@ shaka.util.Mp4BoxParsers = class {
   }
 
   /**
-   * Parses a MP4A box.
+   * Parses an audio sample entry box.
    * @param {!shaka.util.DataViewReader} reader
-   * @return {!shaka.util.ParsedMP4ABox}
+   * @return {!shaka.util.ParsedAudioSampleEntryBox}
    */
-  static parseMP4A(reader) {
+  static audioSampleEntry(reader) {
     reader.skip(6); // Skip "reserved"
     reader.skip(2); // Skip "data_reference_index"
     reader.skip(8); // Skip "reserved"
@@ -841,7 +841,7 @@ shaka.util.ParsedTENCBox;
  *
  * @exportDoc
  */
-shaka.util.ParsedMP4ABox;
+shaka.util.ParsedAudioSampleEntryBox;
 
 /**
  * @typedef {{
diff --git a/test/test/assets/audio-ac-4.mp4 b/test/test/assets/audio-ac-4.mp4
new file mode 100644
index 0000000000..5b0eeb45a6
Binary files /dev/null and b/test/test/assets/audio-ac-4.mp4 differ
diff --git a/test/util/mp4_box_parsers_unit.js b/test/util/mp4_box_parsers_unit.js
index 41a8827af8..c9e4be3275 100644
--- a/test/util/mp4_box_parsers_unit.js
+++ b/test/util/mp4_box_parsers_unit.js
@@ -9,6 +9,7 @@ describe('Mp4BoxParsers', () => {
   const videoSegmentUri = '/base/test/test/assets/sintel-video-segment.mp4';
 
   const audioInitSegmentXheAacUri = '/base/test/test/assets/audio-xhe-aac.mp4';
+  const audioInitSegmentAC4Uri = '/base/test/test/assets/audio-ac-4.mp4';
 
   /** @type {!ArrayBuffer} */
   let videoInitSegment;
@@ -16,16 +17,20 @@ describe('Mp4BoxParsers', () => {
   let videoSegment;
   /** @type {!ArrayBuffer} */
   let audioInitSegmentXheAac;
+  /** @type {!ArrayBuffer} */
+  let audioInitSegmentAC4;
 
   beforeAll(async () => {
     const responses = await Promise.all([
       shaka.test.Util.fetch(videoInitSegmentUri),
       shaka.test.Util.fetch(videoSegmentUri),
       shaka.test.Util.fetch(audioInitSegmentXheAacUri),
+      shaka.test.Util.fetch(audioInitSegmentAC4Uri),
     ]);
     videoInitSegment = responses[0];
     videoSegment = responses[1];
     audioInitSegmentXheAac = responses[2];
+    audioInitSegmentAC4 = responses[3];
   });
 
   it('parses init segment', () => {
@@ -177,9 +182,10 @@ describe('Mp4BoxParsers', () => {
         .box('stbl', Mp4Parser.children)
         .fullBox('stsd', Mp4Parser.sampleDescription)
         .box('mp4a', (box) => {
-          const parsedMP4ABox = shaka.util.Mp4BoxParsers.parseMP4A(box.reader);
-          channelCount = parsedMP4ABox.channelCount;
-          sampleRate = parsedMP4ABox.sampleRate;
+          const parsedAudioSampleEntryBox =
+              shaka.util.Mp4BoxParsers.audioSampleEntry(box.reader);
+          channelCount = parsedAudioSampleEntryBox.channelCount;
+          sampleRate = parsedAudioSampleEntryBox.sampleRate;
           if (box.reader.hasMoreData()) {
             Mp4Parser.children(box);
           }
@@ -193,6 +199,28 @@ describe('Mp4BoxParsers', () => {
     expect(codec).toBe('mp4a.40.42');
   });
 
+  it('parses ac-4 box for ac-4 segment', () => {
+    let channelCount;
+    let sampleRate;
+
+    const Mp4Parser = shaka.util.Mp4Parser;
+    new Mp4Parser()
+        .box('moov', Mp4Parser.children)
+        .box('trak', Mp4Parser.children)
+        .box('mdia', Mp4Parser.children)
+        .box('minf', Mp4Parser.children)
+        .box('stbl', Mp4Parser.children)
+        .fullBox('stsd', Mp4Parser.sampleDescription)
+        .box('ac-4', (box) => {
+          const parsedAudioSampleEntryBox =
+              shaka.util.Mp4BoxParsers.audioSampleEntry(box.reader);
+          channelCount = parsedAudioSampleEntryBox.channelCount;
+          sampleRate = parsedAudioSampleEntryBox.sampleRate;
+        }).parse(audioInitSegmentAC4, /* partialOkay= */ false);
+    expect(channelCount).toBe(10);
+    expect(sampleRate).toBe(48000);
+  });
+
   /**
    *
    * Explanation on the Uint8Array: