diff --git a/pinos/gst/gstpinossocketsink.c b/pinos/gst/gstpinossocketsink.c
index bb8367aa5..73e036994 100644
--- a/pinos/gst/gstpinossocketsink.c
+++ b/pinos/gst/gstpinossocketsink.c
@@ -416,8 +416,6 @@ gst_pinos_socket_sink_open (GstPinosSocketSink * this)
 {
   GError *error = NULL;
 
-  this->cache = gst_burst_cache_new (sizeof (MyReader));
-
   this->context = g_main_context_new ();
   this->loop = g_main_loop_new (this->context, TRUE);
   GST_DEBUG ("context %p, loop %p", this->context, this->loop);
@@ -453,7 +451,6 @@ gst_pinos_socket_sink_close (GstPinosSocketSink * this)
   g_clear_pointer (&this->loop, g_main_loop_unref);
   g_clear_pointer (&this->context, g_main_context_unref);
   g_hash_table_remove_all (this->hash);
-  g_clear_pointer (&this->cache, g_object_unref);
 
   return TRUE;
 }
@@ -799,6 +796,7 @@ gst_pinos_socket_sink_finalize (GObject * object)
   GstPinosSocketSink *this = GST_PINOS_SOCKET_SINK (object);
 
   g_clear_pointer (&this->hash, g_hash_table_unref);
+  g_clear_pointer (&this->cache, g_object_unref);
 
   G_OBJECT_CLASS (parent_class)->finalize (object);
 }
@@ -879,6 +877,7 @@ static void
 gst_pinos_socket_sink_init (GstPinosSocketSink * this)
 {
   this->hash = g_hash_table_new (g_direct_hash, g_direct_equal);
+  this->cache = gst_burst_cache_new (sizeof (MyReader));
   this->allocator = gst_tmpfile_allocator_new ();
   this->fdmanager = pinos_fd_manager_get (PINOS_FD_MANAGER_DEFAULT);
 }
diff --git a/pinos/gst/gstpinossrc.c b/pinos/gst/gstpinossrc.c
index d0487f87f..bfe53d121 100644
--- a/pinos/gst/gstpinossrc.c
+++ b/pinos/gst/gstpinossrc.c
@@ -379,7 +379,7 @@ on_new_buffer (GObject    *gobject,
         if (buf == NULL)
           buf = gst_buffer_new ();
 
-        GST_INFO ("pts %" G_GUINT64_FORMAT ", dts_offset %"G_GUINT64_FORMAT "\n", hdr.pts, hdr.dts_offset);
+        GST_INFO ("pts %" G_GUINT64_FORMAT ", dts_offset %"G_GUINT64_FORMAT, hdr.pts, hdr.dts_offset);
 
         if (GST_CLOCK_TIME_IS_VALID (hdr.pts)) {
           GST_BUFFER_PTS (buf) = hdr.pts;
@@ -495,6 +495,16 @@ parse_stream_properties (GstPinosSrc *pinossrc, PinosProperties *props)
 {
   const gchar *var;
 
+  var = pinos_properties_get (props, "pinos.latency.is-live");
+  pinossrc->is_live = var ? (atoi (var) == 1) : FALSE;
+  gst_base_src_set_live (GST_BASE_SRC (pinossrc), pinossrc->is_live);
+
+  var = pinos_properties_get (props, "pinos.latency.min");
+  pinossrc->min_latency = var ? (GstClockTime) atoi (var) : 0;
+
+  var = pinos_properties_get (props, "pinos.latency.max");
+  pinossrc->max_latency = var ? (GstClockTime) atoi (var) : GST_CLOCK_TIME_NONE;
+
   var = pinos_properties_get (props, "pinos.clock.type");
   if (var != NULL) {
     GST_DEBUG_OBJECT (pinossrc, "got clock type %s", var);
@@ -517,15 +527,6 @@ parse_stream_properties (GstPinosSrc *pinossrc, PinosProperties *props)
             pinossrc->clock, TRUE));
     }
   }
-  var = pinos_properties_get (props, "pinos.latency.is-live");
-  pinossrc->is_live = var ? (atoi (var) == 1) : FALSE;
-  gst_base_src_set_live (GST_BASE_SRC (pinossrc), pinossrc->is_live);
-
-  var = pinos_properties_get (props, "pinos.latency.max");
-  pinossrc->max_latency = var ? (GstClockTime) atoi (var) : GST_CLOCK_TIME_NONE;
-
-  var = pinos_properties_get (props, "pinos.latency.min");
-  pinossrc->min_latency = var ? (GstClockTime) atoi (var) : 0;
 }
 
 
@@ -829,7 +830,7 @@ static GstFlowReturn
 gst_pinos_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
 {
   GstPinosSrc *pinossrc;
-  GstClockTime base_time;
+  GstClockTime pts, dts, base_time;
 
   pinossrc = GST_PINOS_SRC (psrc);
 
@@ -856,20 +857,25 @@ gst_pinos_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
 
     pinos_main_loop_wait (pinossrc->loop);
   }
-  base_time = GST_ELEMENT_CAST (psrc)->base_time;
-
-  if (GST_BUFFER_PTS_IS_VALID (*buffer) && GST_BUFFER_PTS (*buffer) >= base_time)
-    GST_BUFFER_PTS (*buffer) -= base_time;
-  else
-    GST_BUFFER_PTS (*buffer) = 0;
-
-  if (GST_BUFFER_DTS_IS_VALID (*buffer) && GST_BUFFER_DTS (*buffer) >= base_time)
-    GST_BUFFER_DTS (*buffer) -= base_time;
-  else
-    GST_BUFFER_DTS (*buffer) = 0;
-
   pinos_main_loop_unlock (pinossrc->loop);
 
+  base_time = GST_ELEMENT_CAST (psrc)->base_time;
+  pts = GST_BUFFER_PTS (*buffer);
+  dts = GST_BUFFER_DTS (*buffer);
+
+  if (GST_CLOCK_TIME_IS_VALID (pts))
+    pts = (pts >= base_time ? pts - base_time : 0);
+  if (GST_CLOCK_TIME_IS_VALID (dts))
+    dts = (dts >= base_time ? dts - base_time : 0);
+
+  GST_INFO ("pts %" G_GUINT64_FORMAT ", dts %"G_GUINT64_FORMAT
+      ", base-time %"GST_TIME_FORMAT" -> %"GST_TIME_FORMAT", %"GST_TIME_FORMAT,
+      GST_BUFFER_PTS (*buffer), GST_BUFFER_DTS (*buffer), GST_TIME_ARGS (base_time),
+      GST_TIME_ARGS (pts), GST_TIME_ARGS (dts));
+
+  GST_BUFFER_PTS (*buffer) = pts;
+  GST_BUFFER_DTS (*buffer) = dts;
+
   return GST_FLOW_OK;
 
 not_negotiated:
diff --git a/pinos/modules/gst/gst-source.c b/pinos/modules/gst/gst-source.c
index 935db173c..1d359f6d8 100644
--- a/pinos/modules/gst/gst-source.c
+++ b/pinos/modules/gst/gst-source.c
@@ -111,6 +111,8 @@ bus_handler (GstBus     *bus,
   return TRUE;
 }
 
+
+
 static gboolean
 setup_pipeline (PinosGstSource *source, GError **error)
 {
@@ -118,6 +120,7 @@ setup_pipeline (PinosGstSource *source, GError **error)
   GstBus *bus;
 
   priv->pipeline = gst_pipeline_new (NULL);
+  gst_pipeline_set_latency (GST_PIPELINE_CAST (priv->pipeline), 0);
 
   g_debug ("gst-source %p: setup pipeline", source);
 
@@ -153,13 +156,9 @@ start_pipeline (PinosGstSource *source, GError **error)
 
   g_debug ("gst-source %p: starting pipeline", source);
 
-  ret = gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
+  ret = gst_element_set_state (priv->pipeline, GST_STATE_READY);
   if (ret == GST_STATE_CHANGE_FAILURE)
-    goto paused_failed;
-
-  ret = gst_element_get_state (priv->pipeline, NULL, NULL, -1);
-  if (ret == GST_STATE_CHANGE_FAILURE)
-    goto paused_failed;
+    goto ready_failed;
 
   query = gst_query_new_caps (NULL);
   gst_element_query (priv->element, query);
@@ -170,9 +169,9 @@ start_pipeline (PinosGstSource *source, GError **error)
   return TRUE;
 
   /* ERRORS */
-paused_failed:
+ready_failed:
   {
-    GST_ERROR_OBJECT (source, "failed state change");
+    GST_ERROR_OBJECT (source, "failed state change to READY");
     gst_element_set_state (priv->pipeline, GST_STATE_NULL);
     if (error)
       *error = g_error_new (G_IO_ERROR,
@@ -231,7 +230,11 @@ set_state (PinosSource      *source,
       gchar *address;
       gint port;
       GstClockTime base_time;
+      gboolean live;
+      GstClockTime min_latency, max_latency;
 
+      gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
+      gst_element_get_state (priv->pipeline, NULL, NULL, -1);
       gst_element_set_state (priv->pipeline, GST_STATE_PLAYING);
       gst_element_get_state (priv->pipeline, NULL, NULL, -1);
 
@@ -255,21 +258,22 @@ set_state (PinosSource      *source,
 
       query = gst_query_new_latency ();
       if (gst_element_query (GST_ELEMENT_CAST (priv->pipeline), query)) {
-        gboolean live;
-        GstClockTime min_latency, max_latency;
-
         gst_query_parse_latency (query, &live, &min_latency, &max_latency);
-
-        GST_DEBUG_OBJECT (priv->pipeline,
-            "got min latency %" GST_TIME_FORMAT ", max latency %"
-            GST_TIME_FORMAT ", live %d", GST_TIME_ARGS (min_latency),
-            GST_TIME_ARGS (max_latency), live);
-
-        pinos_properties_setf (priv->props, "pinos.latency.is-live", "%d", live);
-        pinos_properties_setf (priv->props, "pinos.latency.min", "%"G_GUINT64_FORMAT, min_latency);
-        pinos_properties_setf (priv->props, "pinos.latency.max", "%"G_GUINT64_FORMAT, max_latency);
+      } else {
+        live = FALSE;
+        min_latency = 0;
+        max_latency = -1;
       }
       gst_query_unref (query);
+
+      GST_DEBUG_OBJECT (priv->pipeline,
+          "got min latency %" GST_TIME_FORMAT ", max latency %"
+          GST_TIME_FORMAT ", live %d", GST_TIME_ARGS (min_latency),
+          GST_TIME_ARGS (max_latency), live);
+
+      pinos_properties_setf (priv->props, "pinos.latency.is-live", "%d", live);
+      pinos_properties_setf (priv->props, "pinos.latency.min", "%"G_GUINT64_FORMAT, min_latency);
+      pinos_properties_setf (priv->props, "pinos.latency.max", "%"G_GUINT64_FORMAT, max_latency);
       break;
     }
     case PINOS_SOURCE_STATE_ERROR:
@@ -355,6 +359,7 @@ on_socket_notify (GObject    *gobject,
   PinosProperties *props;
 
   g_object_get (gobject, "socket", &socket, NULL);
+  GST_DEBUG ("got socket %p", socket);
 
   if (socket == NULL) {
     GSocket *prev_socket = g_object_steal_data (gobject, "last-socket");
@@ -363,7 +368,6 @@ on_socket_notify (GObject    *gobject,
       g_object_unref (prev_socket);
     }
   } else {
-    pinos_source_report_busy (PINOS_SOURCE (source));
     g_signal_emit_by_name (priv->sink, "add", socket);
     g_object_set_data_full (gobject, "last-socket", socket, g_object_unref);
   }
@@ -400,6 +404,7 @@ on_socket_notify (GObject    *gobject,
     }
     /* this is what we use as the final format for the output */
     g_object_set (gobject, "format", format, NULL);
+    pinos_source_report_busy (PINOS_SOURCE (source));
   }
   if (format) {
     pinos_source_update_possible_formats (PINOS_SOURCE (source), format);