update

Former-commit-id: 9c9369de6cb81fcb866e0408ddbefb8390a55a74

publish/src/linux-x64/publish/apps/srs/conf/srs.conf

@@ -23,6 +23,24 @@ stats {
     disk sda sdb xvda xvdb;
 }
 vhost __defaultVhost__ {
+    transcode live  {
+        enabled     on;
+        ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
+        engine snapshot {
+            enabled         on;
+            iformat flv;
+            vfilter {
+                vf fps=1;
+            }
+            vcodec png;
+            vparams {
+                vframes 1;
+            }
+            acodec an;
+            oformat image2;
+            output ./objs/nginx/html/[app]/[stream].png;
+        }
+    }
     http_remux {
         enabled on;
         mount [vhost]/[app]/[stream].flv;