diff --git a/trunk/src/app/srs_app_hls.cpp b/trunk/src/app/srs_app_hls.cpp
index da06432d7..45b075238 100644
--- a/trunk/src/app/srs_app_hls.cpp
+++ b/trunk/src/app/srs_app_hls.cpp
@@ -82,7 +82,7 @@ void SrsHlsSegment::config_cipher(unsigned char* key,unsigned char* iv)
     fw->config_cipher(key, iv);
 }
 
-SrsDvrAsyncCallOnHls::SrsDvrAsyncCallOnHls(int c, SrsRequest* r, string p, string t, string m, string mu, int s, double d)
+SrsDvrAsyncCallOnHls::SrsDvrAsyncCallOnHls(int c, SrsRequest* r, string p, string t, string m, string mu, int s, srs_utime_t d)
 {
     req = r->copy();
     cid = c;
@@ -595,7 +595,7 @@ srs_error_t SrsHlsMuxer::segment_close()
     if (srsu2msi(current->duration()) >= SRS_AUTO_HLS_SEGMENT_MIN_DURATION_MS && (int)srsu2msi(current->duration()) <= max_td * 2 * 1000) {
         // use async to call the http hooks, for it will cause thread switch.
         if ((err = async->execute(new SrsDvrAsyncCallOnHls(_srs_context->get_id(), req, current->fullpath(),
-            current->uri, m3u8, m3u8_url, current->sequence_no, srsu2msi(current->duration()) / 1000.0))) != srs_success) {
+            current->uri, m3u8, m3u8_url, current->sequence_no, current->duration()))) != srs_success) {
             return srs_error_wrap(err, "segment close");
         }
         
diff --git a/trunk/src/app/srs_app_hls.hpp b/trunk/src/app/srs_app_hls.hpp
index f6529b0b7..2f4cb546c 100644
--- a/trunk/src/app/srs_app_hls.hpp
+++ b/trunk/src/app/srs_app_hls.hpp
@@ -91,10 +91,10 @@ private:
     std::string m3u8_url;
     int seq_no;
     SrsRequest* req;
-    double duration;
+    srs_utime_t duration;
 public:
     // TODO: FIXME: Use TBN 1000.
-    SrsDvrAsyncCallOnHls(int c, SrsRequest* r, std::string p, std::string t, std::string m, std::string mu, int s, double d);
+    SrsDvrAsyncCallOnHls(int c, SrsRequest* r, std::string p, std::string t, std::string m, std::string mu, int s, srs_utime_t d);
     virtual ~SrsDvrAsyncCallOnHls();
 public:
     virtual srs_error_t call();
diff --git a/trunk/src/app/srs_app_http_hooks.cpp b/trunk/src/app/srs_app_http_hooks.cpp
index d58be2829..f78400403 100644
--- a/trunk/src/app/srs_app_http_hooks.cpp
+++ b/trunk/src/app/srs_app_http_hooks.cpp
@@ -301,7 +301,7 @@ srs_error_t SrsHttpHooks::on_dvr(int cid, string url, SrsRequest* req, string fi
     return err;
 }
 
-srs_error_t SrsHttpHooks::on_hls(int cid, string url, SrsRequest* req, string file, string ts_url, string m3u8, string m3u8_url, int sn, double duration)
+srs_error_t SrsHttpHooks::on_hls(int cid, string url, SrsRequest* req, string file, string ts_url, string m3u8, string m3u8_url, int sn, srs_utime_t duration)
 {
     srs_error_t err = srs_success;
     
@@ -324,7 +324,7 @@ srs_error_t SrsHttpHooks::on_hls(int cid, string url, SrsRequest* req, string fi
     obj->set("app", SrsJsonAny::str(req->app.c_str()));
     obj->set("stream", SrsJsonAny::str(req->stream.c_str()));
     obj->set("param", SrsJsonAny::str(req->param.c_str()));
-    obj->set("duration", SrsJsonAny::number(duration));
+    obj->set("duration", SrsJsonAny::number(srsu2ms(duration)/1000.0));
     obj->set("cwd", SrsJsonAny::str(cwd.c_str()));
     obj->set("file", SrsJsonAny::str(file.c_str()));
     obj->set("url", SrsJsonAny::str(ts_url.c_str()));
diff --git a/trunk/src/app/srs_app_http_hooks.hpp b/trunk/src/app/srs_app_http_hooks.hpp
index 08dee7e3e..0dfb0f3c9 100644
--- a/trunk/src/app/srs_app_http_hooks.hpp
+++ b/trunk/src/app/srs_app_http_hooks.hpp
@@ -99,11 +99,11 @@ public:
      * @param m3u8 the m3u8 file path, can be relative or absolute path.
      * @param m3u8_url the m3u8 url, which is used for the http mount path.
      * @param sn the seq_no, the sequence number of ts in hls/m3u8.
-     * @param duration the segment duration in seconds.
+     * @param duration the segment duration in srs_utime_t.
      * @param cid the source connection cid, for the on_dvr is async call.
      */
     static srs_error_t on_hls(int cid, std::string url, SrsRequest* req, std::string file, std::string ts_url,
-        std::string m3u8, std::string m3u8_url, int sn, double duration);
+        std::string m3u8, std::string m3u8_url, int sn, srs_utime_t duration);
     /**
      * when hls reap segment, callback.
      * @param url the api server url, to process the event.