rtmpproto: increase APP_MAX_LENGTH

Fixes second part of Ticket2292

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit da8ef5ac2f1b14f4fe34db72af5d5f8b3c8e2ff9)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 090d8ec..f2b3d5f 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -48,7 +48,7 @@
 
 //#define DEBUG
 
-#define APP_MAX_LENGTH 128
+#define APP_MAX_LENGTH 1024
 #define PLAYPATH_MAX_LENGTH 256
 #define TCURL_MAX_LENGTH 512
 #define FLASHVER_MAX_LENGTH 64
@@ -305,7 +305,7 @@
     int ret;
 
     if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
-                                     0, 4096)) < 0)
+                                     0, 4096 + APP_MAX_LENGTH)) < 0)
         return ret;
 
     p = pkt.data;