diff --git a/trunk/research/librtmp/srs_h264_raw_publish.c b/trunk/research/librtmp/srs_h264_raw_publish.c
index ce30c61fa..f4326498e 100644
--- a/trunk/research/librtmp/srs_h264_raw_publish.c
+++ b/trunk/research/librtmp/srs_h264_raw_publish.c
@@ -34,18 +34,26 @@ gcc srs_h264_raw_publish.c ../../objs/lib/srs_librtmp.a -g -O0 -lstdc++ -o srs_h
 
 int main(int argc, char** argv)
 {
-    srs_rtmp_t rtmp;
-    
-    // packet data
-    int type, size;
-    u_int32_t timestamp = 0;
-    char* data;
-    
     srs_trace("publish raw h.264 as rtmp stream to server like FMLE/FFMPEG/Encoder");
     srs_trace("srs(simple-rtmp-server) client librtmp library.");
-    srs_trace("version: %d.%d.%d\n", srs_version_major(), srs_version_minor(), srs_version_revision());
+    srs_trace("version: %d.%d.%d", srs_version_major(), srs_version_minor(), srs_version_revision());
     
-    rtmp = srs_rtmp_create("rtmp://127.0.0.1:1935/live/livestream");
+    if (argc <= 2) {
+        srs_trace("Usage: %s <h264_raw_file> <rtmp_publish_url>", argv[0]);
+        srs_trace("     h264_raw_file: the raw h264 steam file.");
+        srs_trace("     rtmp_publish_url: the rtmp publish url.");
+        srs_trace("For example:");
+        srs_trace("     %s ./720p.h264.raw rtmp://127.0.0.1:1935/live/livestream", argv[0]);
+        srs_trace("Where the file: http://winlinvip.github.io/srs.release/3rdparty/720p.h264.raw");
+        srs_trace("See: https://github.com/winlinvip/simple-rtmp-server/issues/66");
+        exit(-1);
+    }
+    
+    const char* raw_file = argv[1];
+    const char* rtmp_url = argv[2];
+    srs_trace("raw_file=%s, rtmp_url=%s", raw_file, rtmp_url);
+    
+    srs_rtmp_t rtmp = srs_rtmp_create(rtmp_url);
     
     if (srs_simple_handshake(rtmp) != 0) {
         srs_trace("simple handshake failed.");
@@ -65,11 +73,12 @@ int main(int argc, char** argv)
     }
     srs_trace("publish stream success");
     
+    u_int32_t timestamp = 0;
     for (;;) {
-        type = SRS_RTMP_TYPE_VIDEO;
+        int type = SRS_RTMP_TYPE_VIDEO;
         timestamp += 40;
-        size = 4096;
-        data = (char*)malloc(4096);
+        int size = 4096;
+        char* data = (char*)malloc(4096);
         
         if (srs_write_packet(rtmp, type, timestamp, data, size) != 0) {
             goto rtmp_destroy;