diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 4b9c076d3..86d1d2dc0 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -5929,9 +5929,9 @@ srs_utime_t SrsConfig::get_dash_update_period(string vhost)
     return (srs_utime_t)(::atof(conf->arg0().c_str()) * SRS_UTIME_SECONDS);
 }
 
-int SrsConfig::get_dash_timeshift(string vhost)
+srs_utime_t SrsConfig::get_dash_timeshift(string vhost)
 {
-    static int DEFAULT = 60 * 1000;
+    static srs_utime_t DEFAULT = 60 * SRS_UTIME_SECONDS;
     
     SrsConfDirective* conf = get_dash(vhost);
     if (!conf) {
@@ -5943,7 +5943,7 @@ int SrsConfig::get_dash_timeshift(string vhost)
         return DEFAULT;
     }
     
-    return (int)(1000 * ::atof(conf->arg0().c_str()));
+    return (srs_utime_t)(::atof(conf->arg0().c_str()) * SRS_UTIME_SECONDS);
 }
 
 string SrsConfig::get_dash_path(string vhost)
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index c78cbf0fa..b7c2e0ab5 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -1155,8 +1155,8 @@ public:
     virtual srs_utime_t get_dash_fragment(std::string vhost);
     // Get the period to update MPD in srs_utime_t.
     virtual srs_utime_t get_dash_update_period(std::string vhost);
-    // Get the depth of timeshift buffer in milliseconds.
-    virtual int get_dash_timeshift(std::string vhost);
+    // Get the depth of timeshift buffer in srs_utime_t.
+    virtual srs_utime_t get_dash_timeshift(std::string vhost);
     // Get the base/home dir/path for dash, into which write files.
     virtual std::string get_dash_path(std::string vhost);
     // Get the path for DASH MPD, to generate the MPD file.
diff --git a/trunk/src/app/srs_app_dash.cpp b/trunk/src/app/srs_app_dash.cpp
index 67c7916f0..81501bbbe 100644
--- a/trunk/src/app/srs_app_dash.cpp
+++ b/trunk/src/app/srs_app_dash.cpp
@@ -190,7 +190,7 @@ srs_error_t SrsMpdWriter::write(SrsFormat* format)
     srs_error_t err = srs_success;
     
     // MPD is not expired?
-    if (last_update_mpd != -1 && srs_get_system_time_ms() - last_update_mpd < update_period / SRS_UTIME_MILLISECONDS) {
+    if (last_update_mpd != -1 && srs_get_system_time_ms() - last_update_mpd < int64_t(update_period / SRS_UTIME_MILLISECONDS)) {
         return err;
     }
     last_update_mpd = srs_get_system_time_ms();
@@ -211,7 +211,7 @@ srs_error_t SrsMpdWriter::write(SrsFormat* format)
     << "    ns1:schemaLocation=\"urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd\" " << endl
     << "    xmlns=\"urn:mpeg:dash:schema:mpd:2011\" xmlns:ns1=\"http://www.w3.org/2001/XMLSchema-instance\" " << endl
     << "    type=\"dynamic\" minimumUpdatePeriod=\"PT" << update_period / SRS_UTIME_SECONDS << "S\" " << endl
-    << "    timeShiftBufferDepth=\"PT" << timeshit / 1000 << "S\" availabilityStartTime=\"1970-01-01T00:00:00Z\" " << endl
+    << "    timeShiftBufferDepth=\"PT" << timeshit / SRS_UTIME_SECONDS << "S\" availabilityStartTime=\"1970-01-01T00:00:00Z\" " << endl
     << "    maxSegmentDuration=\"PT" << fragment / SRS_UTIME_SECONDS << "S\" minBufferTime=\"PT" << fragment / SRS_UTIME_SECONDS << "S\" >" << endl
     << "    <BaseURL>" << req->stream << "/" << "</BaseURL>" << endl
     << "    <Period start=\"PT0S\">" << endl;
@@ -335,7 +335,7 @@ srs_error_t SrsDashController::on_audio(SrsSharedPtrMessage* shared_audio, SrsFo
         return refresh_init_mp4(shared_audio, format);
     }
     
-    if (acurrent->duration() >= fragment / SRS_UTIME_MILLISECONDS) {
+    if (acurrent->duration() >= int64_t(fragment / SRS_UTIME_MILLISECONDS)) {
         if ((err = acurrent->reap(audio_dts)) != srs_success) {
             return srs_error_wrap(err, "reap current");
         }
@@ -367,7 +367,7 @@ srs_error_t SrsDashController::on_video(SrsSharedPtrMessage* shared_video, SrsFo
         return refresh_init_mp4(shared_video, format);
     }
     
-    bool reopen = format->video->frame_type == SrsVideoAvcFrameTypeKeyFrame && vcurrent->duration() >= fragment / SRS_UTIME_MILLISECONDS;
+    bool reopen = format->video->frame_type == SrsVideoAvcFrameTypeKeyFrame && vcurrent->duration() >= int64_t(fragment / SRS_UTIME_MILLISECONDS);
     if (reopen) {
         if ((err = vcurrent->reap(video_dts)) != srs_success) {
             return srs_error_wrap(err, "reap current");
diff --git a/trunk/src/app/srs_app_dash.hpp b/trunk/src/app/srs_app_dash.hpp
index 45a9a335d..743875375 100644
--- a/trunk/src/app/srs_app_dash.hpp
+++ b/trunk/src/app/srs_app_dash.hpp
@@ -90,8 +90,8 @@ private:
     srs_utime_t fragment;
     // The period to update the mpd in srs_utime_t.
     srs_utime_t update_period;
-    // The timeshift buffer depth.
-    int timeshit;
+    // The timeshift buffer depth in srs_utime_t.
+    srs_utime_t timeshit;
     // The base or home dir for dash to write files.
     std::string home;
     // The MPD path template, from which to build the file path.
diff --git a/trunk/src/utest/srs_utest_config.cpp b/trunk/src/utest/srs_utest_config.cpp
index 43d3fc2c4..07d0c733b 100644
--- a/trunk/src/utest/srs_utest_config.cpp
+++ b/trunk/src/utest/srs_utest_config.cpp
@@ -1819,10 +1819,12 @@ VOID TEST(ConfigUnitTest, CheckDefaultValues)
 	    EXPECT_TRUE(ERROR_SUCCESS == conf.parse(_MIN_OK_CONF));
 	    EXPECT_EQ(3 * SRS_UTIME_SECONDS, conf.get_dash_fragment(""));
 	    EXPECT_EQ(30 * SRS_UTIME_SECONDS, conf.get_dash_update_period(""));
+	    EXPECT_EQ(60 * SRS_UTIME_SECONDS, conf.get_dash_timeshift(""));
 
-	    EXPECT_TRUE(ERROR_SUCCESS == conf.parse(_MIN_OK_CONF"vhost v{dash{dash_fragment 4;dash_update_period 40;}}"));
+	    EXPECT_TRUE(ERROR_SUCCESS == conf.parse(_MIN_OK_CONF"vhost v{dash{dash_fragment 4;dash_update_period 40;dash_timeshift 70;}}"));
 	    EXPECT_EQ(4 * SRS_UTIME_SECONDS, conf.get_dash_fragment("v"));
 	    EXPECT_EQ(40 * SRS_UTIME_SECONDS, conf.get_dash_update_period("v"));
+	    EXPECT_EQ(70 * SRS_UTIME_SECONDS, conf.get_dash_timeshift("v"));
     }
 }