diff --git a/dash/ngx_rtmp_dash_module.c b/dash/ngx_rtmp_dash_module.c
index 2332572..844dbfa 100644
--- a/dash/ngx_rtmp_dash_module.c
+++ b/dash/ngx_rtmp_dash_module.c
@@ -263,6 +263,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
 
 #define NGX_RTMP_DASH_MANIFEST_VIDEO                                           \
     "    <AdaptationSet\n"                                                     \
+    "        id=\"1\"\n"						       \
     "        segmentAlignment=\"true\"\n"                                      \
     "        maxWidth=\"%ui\"\n"                                               \
     "        maxHeight=\"%ui\"\n"                                              \
@@ -298,6 +299,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
 
 #define NGX_RTMP_DASH_MANIFEST_AUDIO                                           \
     "    <AdaptationSet\n"                                                     \
+    "        id=\"2\"\n"						       \
     "        segmentAlignment=\"true\">\n"                                     \
     "      <AudioChannelConfiguration\n"                                       \
     "          schemeIdUri=\"urn:mpeg:dash:"                                   \
@@ -908,7 +910,7 @@ ngx_rtmp_dash_update_fragments(ngx_rtmp_session_t *s, ngx_int_t boundary,
 
 static ngx_int_t
 ngx_rtmp_dash_append(ngx_rtmp_session_t *s, ngx_chain_t *in,
-    ngx_rtmp_dash_track_t *t, ngx_int_t key, uint32_t timestamp)
+    ngx_rtmp_dash_track_t *t, ngx_int_t key, uint32_t timestamp, uint32_t delay)
 {
     u_char         *p;
     size_t          size, bsize;
@@ -1008,7 +1010,7 @@ ngx_rtmp_dash_audio(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
 
     in->buf->pos += 2;
 
-    return ngx_rtmp_dash_append(s, in, &ctx->audio, 0, h->timestamp);
+    return ngx_rtmp_dash_append(s, in, &ctx->audio, 0, h->timestamp, 0);
 }
 
 
@@ -1016,7 +1018,9 @@ static ngx_int_t
 ngx_rtmp_dash_video(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h, 
     ngx_chain_t *in)
 {
+    u_char                    *p;
     uint8_t                    ftype, htype;
+    uint32_t                   delay;
     ngx_rtmp_dash_ctx_t       *ctx;
     ngx_rtmp_codec_ctx_t      *codec_ctx;
     ngx_rtmp_dash_app_conf_t  *dacf;
@@ -1049,6 +1053,14 @@ ngx_rtmp_dash_video(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
     if (htype != 1) {
         return NGX_OK;
     }
+    
+    p = (u_char *) &delay;
+
+    p[0] = in->buf->pos[4];
+    p[1] = in->buf->pos[3];
+    p[2] = in->buf->pos[2];
+    p[3] = 0;
+
 
     ctx->has_video = 1;
 
@@ -1056,7 +1068,8 @@ ngx_rtmp_dash_video(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
 
     in->buf->pos += 5;
 
-    return ngx_rtmp_dash_append(s, in, &ctx->video, ftype == 1, h->timestamp);
+    return ngx_rtmp_dash_append(s, in, &ctx->video, ftype == 1, h->timestamp,
+                                delay);
 }