implemented exec feature

Jamesits · Jun 8, 2012 · 4bb4848 · 4bb4848
1 parent eec4b7b
commit 4bb4848
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Showing 4 changed files with 533 additions and 9 deletions.
diff --git a/README b/README
@@ -11,6 +11,9 @@ NGINX-based RTMP server
 
 * H264 support
 
+* Online transcoding with FFmpeg 
+  (experimental)
+
 * HTTP callbacks on publish/play/record
 
 * Advanced buffering techniques
@@ -77,6 +80,30 @@ rtmp {
             #allow play all;
         }
 
+        # Transcoding (ffmpeg needed)
+        application big {
+            live on;
+
+            # On every pusblished stream run this command (ffmpeg)
+            # with substitutions: $app/${app}, $name/${name} for application & stream name.
+            #
+            # This ffmpeg call receives stream from this application &
+            # reduces the resolution down to 32x32. The stream is the published to
+            # 'small' application (see below) under the same name.
+            #
+            # ffmpeg can do anything with the stream like video/audio
+            # transcoding, resizing, altering container/codec params etc
+            #
+            # Multiple exec lines can be specified.
+
+            exec ffmpeg -re -i rtmp://localhost:1935/$app/$name -vcodec flv -acodec copy -s 32x32 -f flv rtmp://localhost:1935/small/${name};
+        }
+
+        application small {
+            live on;
+            # Video with rediced resolution comes here from ffmpeg
+        }
+
         application mypush {
             live on;
 

diff --git a/config b/config
@@ -10,6 +10,7 @@ CORE_MODULES="$CORE_MODULES
                 ngx_rtmp_netcall_module                     \
                 ngx_rtmp_notify_module                      \
                 ngx_rtmp_relay_module                       \
+                ngx_rtmp_exec_module                        \
                 "
 
 
@@ -38,6 +39,7 @@ NGX_ADDON_SRCS="$NGX_ADDON_SRCS                             \
                 $ngx_addon_dir/ngx_rtmp_relay_module.c      \
                 $ngx_addon_dir/ngx_rtmp_bandwidth.c         \
                 $ngx_addon_dir/ngx_rtmp_codecs.c            \
+                $ngx_addon_dir/ngx_rtmp_exec_module.c       \
                 "
 CFLAGS="$CFLAGS -I$ngx_addon_dir"
 

diff --git a/ngx_rtmp_cmd_module.h b/ngx_rtmp_cmd_module.h
@@ -13,19 +13,22 @@
 #include "ngx_rtmp.h"
 
 
-/* Basic RTMP call support */
+#define NGX_RTMP_MAX_APP            128
+#define NGX_RTMP_MAX_NAME           256
+#define NGX_RTMP_MAX_URL            256
+
 
-/* TODO: improve string sizes */
+/* Basic RTMP call support */
 
 typedef struct {
     double                          trans;
-    u_char                          app[128];
+    u_char                          app[NGX_RTMP_MAX_APP];
     u_char                          flashver[32];
-    u_char                          swf_url[256];
-    u_char                          tc_url[256];
+    u_char                          swf_url[NGX_RTMP_MAX_URL];
+    u_char                          tc_url[NGX_RTMP_MAX_URL];
     double                          acodecs;
     double                          vcodecs;
-    u_char                          page_url[256];
+    u_char                          page_url[NGX_RTMP_MAX_URL];
 } ngx_rtmp_connect_t;
 
 
@@ -41,14 +44,14 @@ typedef struct {
 
 
 typedef struct {
-    u_char                          name[256];
+    u_char                          name[NGX_RTMP_MAX_NAME];
     u_char                          type[16];
     int                             silent;
 } ngx_rtmp_publish_t;
 
 
 typedef struct {
-    u_char                          name[256];
+    u_char                          name[NGX_RTMP_MAX_NAME];
 } ngx_rtmp_fcpublish_t;
 
 
@@ -58,7 +61,7 @@ typedef ngx_rtmp_fcpublish_t ngx_rtmp_fcunsubscribe_t;
 
 
 typedef struct {
-    u_char                          name[256];
+    u_char                          name[NGX_RTMP_MAX_NAME];
     double                          start;
     double                          duration;
     int                             reset;