diff --git a/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/output.mpd b/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/output.mpd
index ff9e4854aa..b81c94aa08 100644
--- a/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/output.mpd
+++ b/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/output.mpd
@@ -9,8 +9,8 @@
       </ContentProtection>
       <Representation id="0" bandwidth="820260" codecs="dvh1.05.01" mimeType="video/mp4" sar="1:1">
         <BaseURL>sparks_dovi_5-video.mp4</BaseURL>
-        <SegmentBase indexRange="1366-1445" timescale="60000">
-          <Initialization range="0-1365"/>
+        <SegmentBase indexRange="1370-1449" timescale="60000">
+          <Initialization range="0-1369"/>
         </SegmentBase>
       </Representation>
     </AdaptationSet>
diff --git a/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/sparks_dovi_5-video.mp4 b/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/sparks_dovi_5-video.mp4
index e9cec02667..2ffeb27d45 100644
Binary files a/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/sparks_dovi_5-video.mp4 and b/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/sparks_dovi_5-video.mp4 differ
diff --git a/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/stream_0.m3u8 b/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/stream_0.m3u8
index bb712552eb..7cf213c127 100644
--- a/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/stream_0.m3u8
+++ b/packager/app/test/testdata/dolby-vision-profile-5-with-encryption/stream_0.m3u8
@@ -3,10 +3,10 @@
 ## Generated with https://github.com/shaka-project/shaka-packager version <tag>-<hash>-<test>
 #EXT-X-TARGETDURATION:3
 #EXT-X-PLAYLIST-TYPE:VOD
-#EXT-X-MAP:URI="sparks_dovi_5-video.mp4",BYTERANGE="1366@0"
+#EXT-X-MAP:URI="sparks_dovi_5-video.mp4",BYTERANGE="1370@0"
 #EXT-X-KEY:METHOD=SAMPLE-AES-CTR,URI="data:text/plain;base64,MTIzNDU2Nzg5MDEyMzQ1Ng==",KEYFORMAT="identity"
 #EXTINF:2.002,
-#EXT-X-BYTERANGE:185521@1446
+#EXT-X-BYTERANGE:185521@1450
 sparks_dovi_5-video.mp4
 #EXTINF:2.002,
 #EXT-X-BYTERANGE:197565
diff --git a/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/output.mpd b/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/output.mpd
index 9f3adeabd8..0950e11dcd 100644
--- a/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/output.mpd
+++ b/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/output.mpd
@@ -9,8 +9,8 @@
       </ContentProtection>
       <Representation id="0" bandwidth="818598" codecs="hvc1.2.4.L90.90" mimeType="video/mp4" sar="1:1">
         <BaseURL>sparks_dovi_8-video.mp4</BaseURL>
-        <SegmentBase indexRange="1366-1445" timescale="60000">
-          <Initialization range="0-1365"/>
+        <SegmentBase indexRange="1370-1449" timescale="60000">
+          <Initialization range="0-1369"/>
         </SegmentBase>
       </Representation>
     </AdaptationSet>
@@ -21,8 +21,8 @@
       </ContentProtection>
       <Representation id="1" bandwidth="818598" codecs="dvh1.08.01" mimeType="video/mp4" sar="1:1">
         <BaseURL>sparks_dovi_8-video.mp4</BaseURL>
-        <SegmentBase indexRange="1366-1445" timescale="60000">
-          <Initialization range="0-1365"/>
+        <SegmentBase indexRange="1370-1449" timescale="60000">
+          <Initialization range="0-1369"/>
         </SegmentBase>
       </Representation>
     </AdaptationSet>
diff --git a/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/sparks_dovi_8-video.mp4 b/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/sparks_dovi_8-video.mp4
index f1cf2372be..aaec54a4a8 100644
Binary files a/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/sparks_dovi_8-video.mp4 and b/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/sparks_dovi_8-video.mp4 differ
diff --git a/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/stream_0.m3u8 b/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/stream_0.m3u8
index 7adec71977..14e6dc18cd 100644
--- a/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/stream_0.m3u8
+++ b/packager/app/test/testdata/dolby-vision-profile-8-with-encryption/stream_0.m3u8
@@ -3,10 +3,10 @@
 ## Generated with https://github.com/shaka-project/shaka-packager version <tag>-<hash>-<test>
 #EXT-X-TARGETDURATION:3
 #EXT-X-PLAYLIST-TYPE:VOD
-#EXT-X-MAP:URI="sparks_dovi_8-video.mp4",BYTERANGE="1366@0"
+#EXT-X-MAP:URI="sparks_dovi_8-video.mp4",BYTERANGE="1370@0"
 #EXT-X-KEY:METHOD=SAMPLE-AES-CTR,URI="data:text/plain;base64,MTIzNDU2Nzg5MDEyMzQ1Ng==",KEYFORMAT="identity"
 #EXTINF:2.002,
-#EXT-X-BYTERANGE:172013@1446
+#EXT-X-BYTERANGE:172013@1450
 sparks_dovi_8-video.mp4
 #EXTINF:2.002,
 #EXT-X-BYTERANGE:189474
diff --git a/packager/media/base/fourccs.h b/packager/media/base/fourccs.h
index 8be50c1b6b..12884a6db7 100644
--- a/packager/media/base/fourccs.h
+++ b/packager/media/base/fourccs.h
@@ -44,6 +44,7 @@ enum FourCC : uint32_t {
   FOURCC_dac3 = 0x64616333,
   FOURCC_dac4 = 0x64616334,
   FOURCC_dash = 0x64617368,
+  FOURCC_dby1 = 0x64627931,
   FOURCC_ddts = 0x64647473,
   FOURCC_dec3 = 0x64656333,
   FOURCC_dfLa = 0x64664c61,
diff --git a/packager/media/formats/mp4/mp4_muxer.cc b/packager/media/formats/mp4/mp4_muxer.cc
index 3c542bd93f..27f926d8ca 100644
--- a/packager/media/formats/mp4/mp4_muxer.cc
+++ b/packager/media/formats/mp4/mp4_muxer.cc
@@ -227,6 +227,10 @@ Status MP4Muxer::DelayInitializeMuxer() {
                             ->h26x_stream_format());
       if (codec_fourcc != FOURCC_NULL)
         ftyp->compatible_brands.push_back(codec_fourcc);
+
+      // https://professional.dolby.com/siteassets/content-creation/dolby-vision-for-content-creators/dolby_vision_bitstreams_within_the_iso_base_media_file_format_dec2017.pdf
+      if (streams()[0].get()->codec_string().find("dvh") != std::string::npos)
+        ftyp->compatible_brands.push_back(FOURCC_dby1);
     }
 
     // CMAF allows only one track/stream per file.