diff --git a/README.md b/README.md
index c82901ab8..bd9f2eb03 100755
--- a/README.md
+++ b/README.md
@@ -31,8 +31,11 @@ step 4: publish live stream <br/>
 FMS URL: rtmp://127.0.0.1:1935/live
 Stream:  livestream
 For example, use ffmpeg to publish:
-    ffmpeg -re -i source.flv -vcodec copy -acodec copy \
-    -f flv -y rtmp://127.0.0.1:1935/live/livestream
+    for((;;)); do \
+        ./objs/ffmpeg/bin/ffmpeg -re -i doc/source.flv -vcodec copy -acodec copy \
+        -f flv -y rtmp://127.0.0.1:1935/live/livestream; \
+        sleep 1; \
+    done
 </pre>
 step 5: play live stream <br/>
 <pre>
@@ -41,8 +44,8 @@ m3u8 url: http://127.0.0.1:80/live/livestream.m3u8
 </pre>
 step 6: play live stream auto transcoded<br/>
 <pre>
-rtmp url: rtmp://127.0.0.1:1935/live/livestream_fast
-m3u8 url: http://127.0.0.1:80/live/livestream_fast.m3u8
+rtmp url: rtmp://127.0.0.1:1935/live/livestream_ld
+m3u8 url: http://127.0.0.1:80/live/livestream_ld.m3u8
 rtmp url: rtmp://127.0.0.1:1935/live/livestream_sd
 m3u8 url: http://127.0.0.1:80/live/livestream_sd.m3u8
 </pre>
diff --git a/trunk/conf/srs.conf b/trunk/conf/srs.conf
index f358323d2..72b8d0a6d 100755
--- a/trunk/conf/srs.conf
+++ b/trunk/conf/srs.conf
@@ -20,7 +20,7 @@ vhost __defaultVhost__ {
         enabled     on;
         ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
         #ffmpeg      ./research/ffempty/ffempty;
-        engine fast{
+        engine ld{
             enabled         on;
             vfilter {
                 #vf                  'drawtext=text=SRS';
@@ -31,7 +31,7 @@ vhost __defaultVhost__ {
             vcodec          libx264;
             vbitrate        300;
             vfps            20;
-            vwidth          480;
+            vwidth          768;
             vheight         320;
             vthreads        1;
             vprofile        baseline;
@@ -45,7 +45,7 @@ vhost __defaultVhost__ {
             aparams {
                 profile:a   aac_low;
             }
-            output          rtmp://[vhost]:[port]/[app]/[stream]_fast;
+            output          rtmp://[vhost]:[port]/[app]/[stream]_ld;
         }
         engine sd{
             enabled         on;
@@ -55,8 +55,8 @@ vhost __defaultVhost__ {
             vcodec          libx264;
             vbitrate        500;
             vfps            20;
-            vwidth          720;
-            vheight         480;
+            vwidth          768;
+            vheight         320;
             vthreads        1;
             vprofile        main;
             vpreset         fast;
@@ -85,7 +85,7 @@ vhost all.transcode.vhost.com {
         # the transcode engine for matched stream.
         # all matched stream will transcoded to the following stream.
         # the transcode set name(ie. hd) is optional and not used.
-        engine super{
+        engine ffsuper{
             # whether the engine is enabled
             # default: off.
             enabled         on;
@@ -143,9 +143,9 @@ vhost all.transcode.vhost.com {
             # [port] the intput stream port.
             # [app] the input stream app.
             # [stream] the input stream name.
-            output          rtmp://[vhost]:[port]/[app]/[stream]_super;
+            output          rtmp://[vhost]:[port]/[app]/[stream]_ffsuper;
         }
-        engine hd{
+        engine ffhd{
             enabled         on;
             vcodec          libx264;
             vbitrate        1200;
@@ -163,9 +163,9 @@ vhost all.transcode.vhost.com {
             achannels       2;
             aparams {
             }
-            output          rtmp://[vhost]:[port]/[app]/[stream]_hd;
+            output          rtmp://[vhost]:[port]/[app]/[stream]_ffhd;
         }
-        engine sd{
+        engine ffsd{
             enabled         on;
             vcodec          libx264;
             vbitrate        800;
@@ -183,9 +183,9 @@ vhost all.transcode.vhost.com {
             achannels       2;
             aparams {
             }
-            output          rtmp://[vhost]:[port]/[app]/[stream]_sd;
+            output          rtmp://[vhost]:[port]/[app]/[stream]_ffsd;
         }
-        engine fast{
+        engine fffast{
             enabled     on;
             vcodec          libx264;
             vbitrate        300;
@@ -203,7 +203,7 @@ vhost all.transcode.vhost.com {
             achannels       2;
             aparams {
             }
-            output          rtmp://[vhost]:[port]/[app]/[stream]_fast;
+            output          rtmp://[vhost]:[port]/[app]/[stream]_fffast;
         }
     }
 }
diff --git a/trunk/doc/source.flv b/trunk/doc/source.flv
new file mode 100644
index 000000000..84bbb0cd7
Binary files /dev/null and b/trunk/doc/source.flv differ