diff --git a/pkg/base/t_http_an__notify.go b/pkg/base/t_http_an__notify.go
index 9e12d59..1058bbd 100644
--- a/pkg/base/t_http_an__notify.go
+++ b/pkg/base/t_http_an__notify.go
@@ -141,7 +141,7 @@ func session2EventCommonInfo(session ISession) SessionEventCommonInfo {
 	info.Url = session.Url()
 	info.AppName = session.AppName()
 	info.StreamName = session.StreamName()
-	info.Url = session.Url()
+	
 	info.UrlParam = session.RawQuery()
 	info.ReadBytesSum = stat.ReadBytesSum
 	info.WroteBytesSum = stat.WroteBytesSum
diff --git a/pkg/logic/http_an__lal.html b/pkg/logic/http_an__lal.html
index 0297773..4226212 100644
--- a/pkg/logic/http_an__lal.html
+++ b/pkg/logic/http_an__lal.html
@@ -499,7 +499,8 @@
             }
 
             function requestGroup() {
-                httpAsync("/api/stat/group?stream_name="+groupName.innerText, "GET", function(code, resp) {
+                let gname = encodeURIComponent(groupName.innerText);
+                httpAsync("/api/stat/group?stream_name="+gname, "GET", function(code, resp) {
                     if(code == 200) {
                         const obj = JSON.parse(resp);
                         for(let index = groupInfoTable.rows.length; index > 0; index--) {
diff --git a/pkg/mpegts/pack.go b/pkg/mpegts/pack.go
index b4d1ecd..103fe31 100644
--- a/pkg/mpegts/pack.go
+++ b/pkg/mpegts/pack.go
@@ -116,10 +116,14 @@ func (frame *Frame) Pack() []byte {
 				// reserved
 				// program_clock_reference_extension
 				// --------------------------------------
-				packet[3] |= 0x20                    // adaptation_field_control 设置Adaptation
-				packet[4] = 7                        // adaptation_field_length
-				packet[5] = 0x50                     // random_access_indicator + PCR_flag
-				packPcr(packet[6:], frame.Dts-delay) // using 6 byte
+				packet[3] |= 0x20 // adaptation_field_control 设置Adaptation
+				packet[4] = 7     // adaptation_field_length
+				packet[5] = 0x50  // random_access_indicator + PCR_flag
+				pcr := uint64(0)
+				if frame.Dts > delay {
+					pcr = frame.Dts - delay
+				}
+				packPcr(packet[6:], pcr) // using 6 byte
 				wpos += 8
 			}