diff --git a/src/mp4_muxer.c b/src/mp4_muxer.c
index a169206..62b18ab 100644
--- a/src/mp4_muxer.c
+++ b/src/mp4_muxer.c
@@ -1,25 +1,47 @@
-/************************************************************************************************************

- * Copyright (c) 2017, Dolby Laboratories Inc.

- * All rights reserved.

-

- * Redistribution and use in source and binary forms, with or without modification, are permitted

- * provided that the following conditions are met:

-

- * 1. Redistributions of source code must retain the above copyright notice, this list of conditions

- *    and the following disclaimer.

- * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions

- *    and the following disclaimer in the documentation and/or other materials provided with the distribution.

- * 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or

- *    promote products derived from this software without specific prior written permission.

-

- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED

- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR

- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 

- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

- * OF THE POSSIBILITY OF SUCH DAMAGE.

+/************************************************************************************************************
+
+ * Copyright (c) 2017, Dolby Laboratories Inc.
+
+ * All rights reserved.
+
+
+
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+
+ * provided that the following conditions are met:
+
+
+
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+
+ *    and the following disclaimer.
+
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions
+
+ *    and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or
+
+ *    promote products derived from this software without specific prior written permission.
+
+
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+
  ************************************************************************************************************/
 /*<
     @file mp4_muxer.c
@@ -1348,15 +1370,23 @@ write_dsi_box(bbio_handle_t snk, track_handle_t track)
         if (track->parser->dv_dsi_size)
         {
             sink_write_u32(snk,track->parser->dv_dsi_size + 8);
-            if (track->parser->ext_timing.ext_dv_profile > 7)

-            {

-                sink_write_4CC(snk, "dvvC");

-            }

-            else

-            {

+            if (track->parser->ext_timing.ext_dv_profile > 7)
+
+            {
+
+                sink_write_4CC(snk, "dvvC");
+
+            }
+
+            else
+
+            {
+
                 sink_write_4CC(snk, "dvcC");
-            }

-

+            }
+
+
+
             snk->write(snk, (uint8_t *)track->parser->dv_dsi_buf, track->parser->dv_dsi_size);
             size += track->parser->dv_dsi_size + 8;
         }
@@ -1523,7 +1553,9 @@ write_video_box(bbio_handle_t snk, track_handle_t track)
     /** Sample Entry */
     SKIP_SIZE_FIELD(snk);
 
-    if (track->parser->ext_timing.ext_dv_profile == 5)
+    if (track->parser->ext_timing.ext_dv_profile == 5
+        || ((track->parser->dv_rpu_nal_flag == 1) && (track->parser->dv_el_nal_flag == 0)) /** non-bc compatible single layer, single track; or dual layer dual track, EL track case; */
+    )
     {
         dolby_vision_flag = 1;
     }
@@ -1532,16 +1564,25 @@ write_video_box(bbio_handle_t snk, track_handle_t track)
     if(dolby_vision_flag && !track->encryptor)
     {
         if (IS_FOURCC_EQUAL(track->parser->dsi_FourCC, "avcC"))
-        {

-            if(IS_FOURCC_EQUAL(codingname, "avc1"))

-            {

-                codingname = "dva1";

-            } 

-            else

-            {

+        {
+
+            if(IS_FOURCC_EQUAL(codingname, "avc1"))
+
+            {
+
+                codingname = "dva1";
+
+            } 
+
+            else
+
+            {
+
                 codingname = "dvav";
-            }

-        }

+            }
+
+        }
+
         else if (IS_FOURCC_EQUAL(track->parser->dsi_FourCC, "hvcC"))
         {
             if(IS_FOURCC_EQUAL(codingname, "hev1"))
@@ -1553,8 +1594,10 @@ write_video_box(bbio_handle_t snk, track_handle_t track)
                 codingname = "dvh1";
             }
         }
-        

-        memcpy(track->codingname, codingname, 4);

+        
+
+        memcpy(track->codingname, codingname, 4);
+
     }
     MOV_WRITE_SAMPLE_ENTRY(snk, (uint8_t *)codingname, track->data_ref_index);
 
@@ -7483,9 +7526,12 @@ mp4_muxer_encrypt_track (track_handle_t         htrack
         uint32_t cnt = cv->count;
         while (cnt--)
         {
-            if ((IS_FOURCC_EQUAL(htrack->codingname, "avc1"))

-			 || (IS_FOURCC_EQUAL(codingname,"avc3"))

-			 || (IS_FOURCC_EQUAL(htrack->codingname, "hvc1")) 

+            if ((IS_FOURCC_EQUAL(htrack->codingname, "avc1"))
+
+			 || (IS_FOURCC_EQUAL(codingname,"avc3"))
+
+			 || (IS_FOURCC_EQUAL(htrack->codingname, "hvc1")) 
+
 			 || (IS_FOURCC_EQUAL(htrack->codingname, "hev1")))
             {
                 int64_t *pos = (int64_t *)list_it_get_entry(htrack->pos_lst);