diff --git a/README.md b/README.md
index 1d0f83756..50b586526 100755
--- a/README.md
+++ b/README.md
@@ -508,6 +508,7 @@ Supported operating systems and hardware:
 * 2013-10-17, Created.<br/>
 
 ## History
+* v2.0, 2015-01-08, hotfix [#281](https://github.com/winlinvip/simple-rtmp-server/issues/281), fix hls bug ignore type-9 send aud. 2.0.93
 * v2.0, 2015-01-03, fix [#274](https://github.com/winlinvip/simple-rtmp-server/issues/274), http-callback support on_dvr when reap a dvr file. 2.0.89
 * v2.0, 2015-01-03, hotfix to remove the pageUrl for http callback. 2.0.88
 * v2.0, 2015-01-03, fix [#179](https://github.com/winlinvip/simple-rtmp-server/issues/179), dvr support custom filepath by variables. 2.0.87
@@ -561,6 +562,7 @@ Supported operating systems and hardware:
 * v2.0, 2014-10-18, remove supports for OSX(darwin). 2.0.1.
 * v2.0, 2014-10-16, revert github srs README to English. 2.0.0.
 
+* v1.0, 2015-01-08, hotfix [#281](https://github.com/winlinvip/simple-rtmp-server/issues/281), fix hls bug ignore type-9 send aud. 1.0.20
 * v1.0, 2015-01-03, hotfix to remove the pageUrl for http callback. 1.0.19
 * v1.0, 2015-01-02, hotfix [#207](https://github.com/winlinvip/simple-rtmp-server/issues/207), trim the last 0 of log. 1.0.18
 * v1.0, 2015-01-02, hotfix [#216](https://github.com/winlinvip/simple-rtmp-server/issues/216), http-callback post in application/json content-type. 1.0.17
diff --git a/trunk/src/app/srs_app_hls.cpp b/trunk/src/app/srs_app_hls.cpp
index 460d03b0a..378f3ec1e 100644
--- a/trunk/src/app/srs_app_hls.cpp
+++ b/trunk/src/app/srs_app_hls.cpp
@@ -1272,9 +1272,13 @@ int SrsHlsCache::cache_video(SrsAvcAacCodec* codec, SrsCodecSample* sample)
         // 6: Supplemental enhancement information (SEI) sei_rbsp( ), page 61
         // @see: ngx_rtmp_hls_append_aud
         if (!aud_sent) {
-            if (nal_unit_type == 9) {
+            // @remark, when got type 9, we donot send aud_nal, but it will make 
+            //      ios unhappy, so we remove it.
+            // @see https://github.com/winlinvip/simple-rtmp-server/issues/281
+            /*if (nal_unit_type == 9) {
                 aud_sent = true;
-            }
+            }*/
+            
             if (nal_unit_type == 1 || nal_unit_type == 5 || nal_unit_type == 6) {
                 // for type 6, append a aud with type 9.
                 vb->append((const char*)aud_nal, sizeof(aud_nal));
@@ -1485,6 +1489,10 @@ int SrsHls::on_video(SrsSharedPtrMessage* __video)
     
     sample->clear();
     if ((ret = codec->video_avc_demux(video->payload, video->size, sample)) != ERROR_SUCCESS) {
+        if (sample->frame_type == SrsCodecVideoAVCFrameVideoInfoFrame) {
+            srs_warn("hls igone the info frame, ret=%d", ret);
+            return ERROR_SUCCESS;
+        }
         srs_error("hls codec demux video failed. ret=%d", ret);
         return ret;
     }
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 11b120bbb..57a70a3ed 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    92
+#define VERSION_REVISION    93
+
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_ROLE "origin/edge server"