diff --git a/trunk/src/app/srs_app_hls.cpp b/trunk/src/app/srs_app_hls.cpp
index 077b0f3c9..59d436a2c 100644
--- a/trunk/src/app/srs_app_hls.cpp
+++ b/trunk/src/app/srs_app_hls.cpp
@@ -462,6 +462,9 @@ srs_error_t SrsHlsMuxer::segment_open()
     if ((err = current->writer->open(tmp_file)) != srs_success) {
         return srs_error_wrap(err, "open hls muxer");
     }
+
+    // reset the context for a new ts start.
+    context->reset();
     
     return err;
 }
diff --git a/trunk/src/app/srs_app_hls.hpp b/trunk/src/app/srs_app_hls.hpp
index cb95ac738..5d7535f1c 100644
--- a/trunk/src/app/srs_app_hls.hpp
+++ b/trunk/src/app/srs_app_hls.hpp
@@ -157,7 +157,8 @@ private:
     // The key and iv.
     unsigned char key[16];
     unsigned char iv[16];
-    SrsFileWriter *writer;
+    // The underlayer file writer.
+    SrsFileWriter* writer;
 private:
     int _sequence_no;
     srs_utime_t max_td;