diff --git a/trunk/conf/hls.mp4.conf b/trunk/conf/hls.mp4.conf
index b957ca2a26..78b8fa3dde 100644
--- a/trunk/conf/hls.mp4.conf
+++ b/trunk/conf/hls.mp4.conf
@@ -11,12 +11,16 @@ http_server {
     listen          8080;
     dir             ./objs/nginx/html;
 }
+http_api {
+    enabled         on;
+    listen          1985;
+}
 vhost __defaultVhost__ {
     hls {
         enabled         on;
         hls_use_fmp4    on;
         hls_path        ./objs/nginx/html;
-        hls_fragment    10;
-        hls_window      60;
+        hls_fragment    2;
+        hls_window      10;
     }
 }
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index c06b3a3941..4c337ffca9 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -989,6 +989,7 @@ class SrsConfig
     // Whether enable hls_ctx
     virtual bool get_hls_ctx_enabled(std::string vhost);
     // Whether enable session for ts file.
+    // The ts file including .ts file for MPEG-ts segment, .m4s file and init.mp4 file for fmp4 segment.
     virtual bool get_hls_ts_ctx_enabled(std::string vhost);
 // hds section
 private:
diff --git a/trunk/src/app/srs_app_http_static.hpp b/trunk/src/app/srs_app_http_static.hpp
index d4682370d8..9c679acf50 100644
--- a/trunk/src/app/srs_app_http_static.hpp
+++ b/trunk/src/app/srs_app_http_static.hpp
@@ -74,6 +74,7 @@ class SrsVodStream : public SrsHttpFileServer
     virtual srs_error_t serve_mp4_stream(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath, int64_t start, int64_t end);
     // Support HLS streaming with pseudo session id.
     virtual srs_error_t serve_m3u8_ctx(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
+    // the ts file including: .ts .m4s init.mp4
     virtual srs_error_t serve_ts_ctx(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
 };
 
diff --git a/trunk/src/protocol/srs_protocol_http_stack.cpp b/trunk/src/protocol/srs_protocol_http_stack.cpp
index b280fca387..c11e4eac3f 100644
--- a/trunk/src/protocol/srs_protocol_http_stack.cpp
+++ b/trunk/src/protocol/srs_protocol_http_stack.cpp
@@ -405,13 +405,15 @@ srs_error_t SrsHttpFileServer::serve_http(ISrsHttpResponseWriter* w, ISrsHttpMes
     // use vod stream for .flv/.fhv
     if (srs_string_ends_with(fullpath, ".flv") || srs_string_ends_with(fullpath, ".fhv")) {
         return serve_flv_file(w, r, fullpath);
-    } else if (srs_string_ends_with(fullpath, ".mp4")) {
-        return serve_mp4_file(w, r, fullpath);
     } else if (srs_string_ends_with(upath, ".m3u8")) {
         return serve_m3u8_file(w, r, fullpath);
-    } else if (srs_string_ends_with(upath, ".ts")) {
+    } else if (srs_string_ends_with(upath, ".ts") ||
+               srs_string_ends_with(upath, ".m4s") ||
+               srs_path_basename(upath) == "init.mp4") {
         return serve_ts_file(w, r, fullpath);
-    }
+    } else if (srs_string_ends_with(fullpath, ".mp4")) {
+        return serve_mp4_file(w, r, fullpath);
+    } 
     
     // serve common static file.
     return serve_file(w, r, fullpath);
diff --git a/trunk/src/protocol/srs_protocol_http_stack.hpp b/trunk/src/protocol/srs_protocol_http_stack.hpp
index fcef24401d..90c5a0d09c 100644
--- a/trunk/src/protocol/srs_protocol_http_stack.hpp
+++ b/trunk/src/protocol/srs_protocol_http_stack.hpp
@@ -352,6 +352,7 @@ class SrsHttpFileServer : public ISrsHttpHandler
     virtual srs_error_t serve_flv_file(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
     virtual srs_error_t serve_mp4_file(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
     virtual srs_error_t serve_m3u8_file(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
+    // the ts file including: .ts .m4s init.mp4
     virtual srs_error_t serve_ts_file(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
 protected:
     // When access flv file with x.flv?start=xxx
@@ -371,6 +372,7 @@ class SrsHttpFileServer : public ISrsHttpHandler
     // Remark 2:
     //           If use two same "hls_ctx" in different requests, SRS cannot detect so that they will be treated as one.
     virtual srs_error_t serve_m3u8_ctx(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
+    // the ts file including: .ts .m4s init.mp4
     virtual srs_error_t serve_ts_ctx(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std::string fullpath);
 protected:
     // Copy the fs to response writer in size bytes.