diff --git a/trunk/auto/depends.sh b/trunk/auto/depends.sh
index de9e04356..8b5fdbb86 100755
--- a/trunk/auto/depends.sh
+++ b/trunk/auto/depends.sh
@@ -522,9 +522,9 @@ else
 fi
 
 if [ $SRS_TRANSCODE = YES ]; then
-    echo "#define SRS_TRANSCODE" >> $SRS_AUTO_HEADERS_H
+    echo "#define SRS_RTMP_TRANSCODE" >> $SRS_AUTO_HEADERS_H
 else
-    echo "#undef SRS_TRANSCODE" >> $SRS_AUTO_HEADERS_H
+    echo "#undef SRS_RTMP_TRANSCODE" >> $SRS_AUTO_HEADERS_H
 fi
 
 if [ $SRS_INGEST = YES ]; then
diff --git a/trunk/src/app/srs_app_encoder.cpp b/trunk/src/app/srs_app_encoder.cpp
index b1811b00e..0962e75db 100644
--- a/trunk/src/app/srs_app_encoder.cpp
+++ b/trunk/src/app/srs_app_encoder.cpp
@@ -34,7 +34,7 @@ using namespace std;
 #include <srs_protocol_rtmp_stack.hpp>
 #include <srs_app_ffmpeg.hpp>
 
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
 
 // when error, encoder sleep for a while and retry.
 #define SRS_ENCODER_SLEEP_US (int64_t)(3*1000*1000LL)
diff --git a/trunk/src/app/srs_app_encoder.hpp b/trunk/src/app/srs_app_encoder.hpp
index db9494549..ba5bf0a16 100644
--- a/trunk/src/app/srs_app_encoder.hpp
+++ b/trunk/src/app/srs_app_encoder.hpp
@@ -29,7 +29,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 #include <srs_core.hpp>
 
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
 
 #include <string>
 #include <vector>
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 35c456737..f83aef7ae 100644
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -431,7 +431,7 @@ SrsSource::SrsSource(SrsRequest* _req)
 #ifdef SRS_HLS
     hls = new SrsHls(this);
 #endif
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
     encoder = new SrsEncoder();
 #endif
     
@@ -477,7 +477,7 @@ SrsSource::~SrsSource()
 #ifdef SRS_HLS
     srs_freep(hls);
 #endif
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
     srs_freep(encoder);
 #endif
 
@@ -605,7 +605,7 @@ int SrsSource::on_reload_vhost_transcode(string vhost)
         return ret;
     }
     
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
     encoder->on_unpublish();
     if ((ret = encoder->on_publish(req)) != ERROR_SUCCESS) {
         srs_error("start encoder failed. ret=%d", ret);
@@ -919,7 +919,7 @@ int SrsSource::on_publish(SrsRequest* _req)
         return ret;
     }
     
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
     if ((ret = encoder->on_publish(req)) != ERROR_SUCCESS) {
         srs_error("start encoder failed. ret=%d", ret);
         return ret;
@@ -941,7 +941,7 @@ void SrsSource::on_unpublish()
     // destroy all forwarders
     destroy_forwarders();
 
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
     encoder->on_unpublish();
 #endif
 
diff --git a/trunk/src/app/srs_app_source.hpp b/trunk/src/app/srs_app_source.hpp
index b454b9392..ba300f031 100644
--- a/trunk/src/app/srs_app_source.hpp
+++ b/trunk/src/app/srs_app_source.hpp
@@ -46,7 +46,7 @@ class SrsRequest;
 #ifdef SRS_HLS
 class SrsHls;
 #endif
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
 class SrsEncoder;
 #endif
 
@@ -224,7 +224,7 @@ private:
     SrsHls* hls;
 #endif
     // transcoding handler.
-#ifdef SRS_TRANSCODE
+#ifdef SRS_RTMP_TRANSCODE
     SrsEncoder* encoder;
 #endif
     // gop cache for client fast startup.