diff --git a/README.md b/README.md
index 2e7c57c0d..5a6482322 100755
--- a/README.md
+++ b/README.md
@@ -214,6 +214,7 @@ Please select your language:
 
 ### V2 changes
 
+* v2.0, 2017-04-09, Fix [#834][bug #834], crash for TS context corrupt. 2.0.235
 * <strong>v2.0, 2017-03-03, [2.0 release0(2.0.234)][r2.0r0] released. 86373 lines.</strong>
 * v2.0, 2017-02-25, for [#730][bug #730], remove the test code. 2.0.234
 * v2.0, 2017-02-09, fix [#503][bug #503] disable utilities when reload a source. 2.0.233
@@ -1383,6 +1384,7 @@ Winlin
 [bug #750]: https://github.com/ossrs/srs/issues/750
 [bug #752]: https://github.com/ossrs/srs/issues/752
 [bug #503]: https://github.com/ossrs/srs/issues/503
+[bug #834]: https://github.com/ossrs/srs/issues/834
 [bug #xxxxxxxxxx]: https://github.com/ossrs/srs/issues/xxxxxxxxxx
 
 [bug #735]: https://github.com/ossrs/srs/issues/735
diff --git a/trunk/auto/build_ffmpeg.sh b/trunk/auto/build_ffmpeg.sh
index d7b551a1c..64f912cd0 100755
--- a/trunk/auto/build_ffmpeg.sh
+++ b/trunk/auto/build_ffmpeg.sh
@@ -42,7 +42,7 @@ else
     echo "build fdk-aac-0.1.3"
     cd $ff_current_dir &&
     rm -rf fdk-aac-0.1.3 && unzip -q ${ff_src_dir}/fdk-aac-0.1.3.zip &&
-    cd fdk-aac-0.1.3 && bash autogen.sh && ./configure --prefix=${ff_release_dir} --enable-static && make ${SRS_JOBS} && make install &&
+    cd fdk-aac-0.1.3 && bash autogen.sh && ./configure --prefix=${ff_release_dir} --enable-static && make ${SRS_JOBS} && make install
     ret=$?; if [[ 0 -ne ${ret} ]]; then echo "build fdk-aac-0.1.3 failed"; exit 1; fi
 fi
 
diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index 9e78b7932..b2f45dfc4 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -521,6 +521,14 @@ int SrsRtmpConn::stream_service_cycle()
     }
     srs_info("security check ok");
     
+    // Never allow the empty stream name, for HLS may write to a file with empty name.
+    // @see https://github.com/ossrs/srs/issues/834
+    if (req->stream.empty()) {
+        ret = ERROR_RTMP_STREAM_NAME_EMPTY;
+        srs_error("RTMP: Empty stream name not allowed, ret=%d", ret);
+        return ret;
+    }
+
     // client is identified, set the timeout to service timeout.
     rtmp->set_recv_timeout(SRS_CONSTS_RTMP_TMMS);
     rtmp->set_send_timeout(SRS_CONSTS_RTMP_TMMS);
diff --git a/trunk/src/kernel/srs_kernel_error.hpp b/trunk/src/kernel/srs_kernel_error.hpp
index b1351135c..fc0dc3d2c 100644
--- a/trunk/src/kernel/srs_kernel_error.hpp
+++ b/trunk/src/kernel/srs_kernel_error.hpp
@@ -158,7 +158,8 @@
 #define ERROR_RTMP_STREAM_NOT_FOUND         2048
 #define ERROR_RTMP_CLIENT_NOT_FOUND         2049
 #define ERROR_OpenSslCreateHMAC             2050
-//
+#define ERROR_RTMP_STREAM_NAME_EMPTY        2051
+//                                           
 // system control message,
 // not an error, but special control logic.
 //
@@ -260,6 +261,7 @@
 #define ERROR_MP4_AVCC_CHANGE               3085
 #define ERROR_MP4_ASC_CHANGE                3086
 #define ERROR_DASH_WRITE_FAILED             3087
+#define ERROR_TS_CONTEXT_NOT_READY          3088
 
 ///////////////////////////////////////////////////////
 // HTTP/StreamCaster/KAFKA protocol error.
diff --git a/trunk/src/kernel/srs_kernel_ts.cpp b/trunk/src/kernel/srs_kernel_ts.cpp
index 48157c4c6..3f732c039 100644
--- a/trunk/src/kernel/srs_kernel_ts.cpp
+++ b/trunk/src/kernel/srs_kernel_ts.cpp
@@ -199,6 +199,7 @@ ISrsTsHandler::~ISrsTsHandler()
 
 SrsTsContext::SrsTsContext()
 {
+    ready = false;
     pure_audio = false;
     sync_byte = 0x47; // ts default sync byte.
     vcodec = SrsVideoCodecIdReserved;
@@ -235,6 +236,7 @@ void SrsTsContext::on_pmt_parsed()
 
 void SrsTsContext::reset()
 {
+    ready = false;
     vcodec = SrsVideoCodecIdReserved;
     acodec = SrsAudioCodecIdReserved1;
 }
@@ -443,6 +445,9 @@ int SrsTsContext::encode_pat_pmt(SrsFileWriter* writer, int16_t vpid, SrsTsStrea
         }
     }
     
+    // When PAT and PMT are writen, the context is ready now.
+    ready = true;
+
     return ret;
 }
 
@@ -450,6 +455,13 @@ int SrsTsContext::encode_pes(SrsFileWriter* writer, SrsTsMessage* msg, int16_t p
 {
     int ret = ERROR_SUCCESS;
     
+    // Sometimes, the context is not ready(PAT/PMT write failed), error in this situation.
+    if (!ready) {
+        ret = ERROR_TS_CONTEXT_NOT_READY;
+        srs_error("TS: context not ready, ret=%d", ret);
+        return ret;
+    }
+
     if (msg->payload->length() == 0) {
         return ret;
     }
diff --git a/trunk/src/kernel/srs_kernel_ts.hpp b/trunk/src/kernel/srs_kernel_ts.hpp
index 061a46ffe..ebb514818 100644
--- a/trunk/src/kernel/srs_kernel_ts.hpp
+++ b/trunk/src/kernel/srs_kernel_ts.hpp
@@ -342,7 +342,12 @@ public:
  */
 class SrsTsContext
 {
-    // codec
+private:
+    // Whether context is ready, failed if try to write data when not ready.
+    // When PAT and PMT writen, the context is ready.
+    // @see https://github.com/ossrs/srs/issues/834
+    bool ready;
+// codec
 private:
     std::map<int, SrsTsChannel*> pids;
     bool pure_audio;